Section 20: Road-Weather Transactions

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Road Weather Transactions (HQ/HR)

An agency may request out-of-state road and weather information by sending an inquiry (HQ) through Nlets to a participating state. A road/weather information file will be maintained by each participating state. Inquiries and responses are exchanged via Nlets similar to the way motor vehicle inquiries and responses are exchanged.

The NOAA weather wire services (NWWS) are now transmitted to the states via the Nlets network. This allows states to select between various weather data options that affect their state.

The states participating in the Nlets Road/Weather Program may be obtained by sending an Administrative Message (AM) to the ORI "NLWTHHELP".

Should Nlets users choose to send weather inquiries to any of the states listed as not participating, they should not expect a response of any kind. This does not preclude requesting weather conditions for a specific community or area using an administrative (AM) message.

Query Requirements

  • Up to 5 two character state codes are permitted per inquiry.
  • At the present time there is no fixed response.
  • If a state is unable to support automated responses, manual responses are acceptable.
IMPORTANT NOTE: Each state's road/weather file must contain enough information and must be
updated often enough to be meaningful.
  • Road/weather inquiries do not have to be in a fixed format except for the time and date fields preceding the text information in an inquiry and the "TIM/" and "DAT/" field following the "TXT" in a response.

Should a state choose not to support road/weather inquiry, a standard response should be returned.

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GJXDM (DEPRECATED)

GJXDM has been deprecated. Please contact Nlets for additional assistance with GJXDM.

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NIEM

Road Weather NIEM Specifications

This section provides format specifications and examples for NIEM Road/Weather transactions (HQ/HR).

Road/weather inquiries/responses do not have to be in a fixed format except for the time and date field preceding the text information in an inquiry and following the "text" in a response.

All Nlets NIEM messages must be based on the Nlets NIEM Message Structure and include the standard Nlets XML Header as detailed in Message Structure. The NIEM header and hierarchy of the elements in this section have been omitted to avoid redundancy. The associated schemas and instances should be consulted to determine the correct XPaths of the elements.

Element Dictionary

Transaction types detailed below include: Road Weather Query (HQ) and Road Weather Response (HR).

Query Formats

Road Weather Query (HQ)

n2:NLETSInquiryData
This element will contain all elements specific to this transaction.

  n2:InquiryDescriptionText
  This element contains free text . Include personal descriptors (name, sex) with other relevant data (case number,
  booking number, state ID, miscellaneous number) followed by any additional free text.

Response Formats

Road Weather Response (HR)

n2:NLETSResponseData

n2:ResponseText

This element will contain the free text response. Nlets recommends the use of

<![CDATA[1234567890]]>

tags to ensure that the response does not contain any characters illegal in XML.

Road Weather NIEM Examples

Example 1: Road/Weather query sent by a user.

<n2:NLETS xmlns:nh2="http://www.nlets.org/niem/nlets-hdr/1.0" n2:version="4.00" xmlns:nc="http://niem.gov/niem/niem-core/2.0" xmlns:n2="http://www.nlets.org/niem/1.0">
	<n2:NLETSMessageHeader>
		<nh2:MessageKeyCodeText>HQ</nh2:MessageKeyCodeText>
		<nh2:OriginatingORIID>AZNLETS20</nh2:OriginatingORIID>
		<nh2:DestinationORIID>IN</nh2:DestinationORIID>
		<nh2:DocumentControlFieldText>NLTEST0001</nh2:DocumentControlFieldText>
	</n2:NLETSMessageHeader>
	<n2:NLETSInquiryData n2:key="HQ">
		<n2:InquiryDescriptionText>WEATHER</n2:InquiryDescriptionText>
	</n2:NLETSInquiryData>
</n2:NLETS>
</n2:NLETS>

Example 2: Road/Weather response received by user.

<n2:NLETS xmlns:nh2="http://www.nlets.org/niem/nlets-hdr/1.0" n2:version="4.00" xmlns:nc="http://niem.gov/niem/niem-core/2.0" xmlns:n2="http://www.nlets.org/niem/1.0">
  <n2:NLETSMessageHeader>
    <nh2:MessageKeyCodeText>HR</nh2:MessageKeyCodeText>
    <nh2:OriginatingORIID>INFOX0000</nh2:OriginatingORIID>
    <nh2:DestinationORIID>AZNLETS45</nh2:DestinationORIID>
    <nh2:DocumentControlFieldText><![CDATA[NLTEST0001]]></nh2:DocumentControlFieldText>
    <nh2:MessageReceiveDate>12/01/2019</nh2:MessageReceiveDate>
    <nh2:MessageReceiveTime>09:45</nh2:MessageReceiveTime>
    <nh2:MessageSendDate>12/01/2019</nh2:MessageSendDate>
    <nh2:MessageSendTime>09:45</nh2:MessageSendTime>
    <nh2:ReceiveMessageNumeric>00000</nh2:ReceiveMessageNumeric>
    <nh2:SendMessageNumeric>00162</nh2:SendMessageNumeric>
  </n2:NLETSMessageHeader>
  <n2:NLETSResponseData n2:key="HR">
    <n2:ResponseText>INDIANA ROAD REPORT
INDIANA STATE POLICE INDIANAPOLIS, IN
1145 EST SUNDAY    DEC 01 2019
****************************************************************************
ROAD CONDITION INFORMATION IS UPDATED FROM REPORTS PROVIDED BY TROOPERS FROM
EACH INDIANA STATE POLICE POST EVERY 4 HOURS; MORE FREQUENTLY IF CONDITIONS
DETERIORATE OR BECOME SEVERE.  FOR THE MOST CURRENT INFORMATION AVAILABLE,
IT IS ADVISEABLE TO CONSULT LOCAL TELEVISION OR RADIO STATIONS, OR WEATHER
INFORMATION SOURCES ON THE INTERNET. WE ASK CITIZENS NOT TO CALL ANY INDIANA
STATE POLICE POST FOR CONDITION UPDATES, IN ORDER TO KEEP THE TELEPHONE LINES
FREE FOR EMERGENCY CALLS. THIS INFORMATION IS ALSO AVAILABLE ON OUR TOLL-FREE
           RECORDED ROAD CONDITIONS LINE AT 1-800-555-5555.
ADDITIONAL INFORMATION CONCERNING ROAD SURFACE CONDITIONS CAN BE FOUND AT:
****************************************************************************
**** ROAD AND WEATHER CONDITIONS FOR THE STATE OF INDIANA ****
              NORTHERN REGION
DISTRICT/14 SP LAFAYETTE
I-65 REMINGTON TO BROOKSTON                  WET
I-65 BROOKSTON TO LAFAYETTE                  WET
I-65 LAFAYETTE TO FRANKFORT                  WET
I-65 FRANKFORT TO THORNTOWN                  WET
I-74 ILLINOIS TO VEEDERSBURG                 WET
I-74 VEEDERSBURG TO CRAWFORDSVILLE           WET
OTHER US AND STATE ROADS                     WET
SECONDARY ROADS                              WET
--------
DISTRICT/13 SP LOWELL
I-65 GARY TO CROWN POINT                     DRY
I-65 CROWN POINT TO ROSELAWN-DEMOTTE         DRY
I-65 ROSELAWN-DEMOTTE TO REMINGTON           DRY
I-80 ILLINOIS TO LAKE STATION-PORTAGE        DRY
I-94 PORTAGE TO MICHIGAN CITY                DRY
I-94 MICHIGAN CITY TO MICHIGAN               DRY
OTHER US AND STATE ROADS                     DRY
SECONDARY ROADS                              DRY
--------
DISTRICT/16 SP PERU
US-31 COUNTIES- FULTON MIAMI                 WET
US-31 COUNTIES- HOWARD TIPTON                WET
US-24 COUNTIES- CASS MIAMI WABASH            WET
OTHER US AND STATE ROADS                     WET
SECONDARY ROADS                              WET
--------------------
DISTRICT/21 SP TOLL ROAD
I-80/90 ILLINOIS LINE TO SOUTH BEND          --I-80/90 SOUTH BEND TO HOWE-LAGRANGE          --I-80/90 HOWE-LAGRANGE TO OHIO LINE           ------------------------------
DISTRICT/22 SP FORT WAYNE
I-69 MICHIGAN TO AUBURN                      DRY
I-69 AUBURN TO FORT WAYNE                    DRY
I-69 FORT WAYNE TO HUNTINGTON                DRY
I-69 HUNTINGTON TO WARREN                    DRY
I-469 FORT WAYNE AREA                        DRY
US-6 COUNTIES- NOBLE DEKALB                  DRY
US-24 COUNTIES- HUNTINGTON ALLEN             DRY
US-27 COUNTIES- ALLEN ADAMS                  DRY
US-30 COUNTIES- ALLEN WHITLEY                DRY
DRY
SR-3 COUNTIES- ALLEN LAGRANGE NOBLE          
DISTRICT/24 SP BREMEN
US-31 COUNTIES- SAINT JOSEPH MARSHALL        --US-30 COUNTIES- KOSCIUSKO MARSHALL           --US-6 COUNTIES- ELKHART MARSHALL              --US-20 COUNTIES- ELKHART SAINT JOSEPH         --SR-15 COUNTIES- ELKHART KOSCIUSKO            --OTHER US AND STATE ROADS                     --SECONDARY ROADS                              --------------
              CENTRAL REGION
DISTRICT/32 SP TERRE HAUTE
I-70 ILLINOIS THRU TERRE HAUTE TO BRAZIL     DRY
US-36 COUNTIES- VERMILLION PARKE             DRY
US-40 COUNTIES- VIGO CLAY                    DRY
US-41 COUNTIES- SULLIVAN VIGO                DRY
US-41 COUNTIES- PARKE                        DRY
SR-59 COUNTIES- CLAY PARKE                   DRY
SR-63 COUNTIES- VIGO VERMILLION              DRY
SECONDARY ROADS                              DRY
--------
DISTRICT/25 SP REDKEY
I-69 MARION GAS CITY HARTFORD CITY           WET
I-69 HARTFORD CITY TO MUNCIE                 WET
US-27 COUNTIES- JAY RANDOLPH                 WET
SR-1 COUNTIES- JAY RANDOLPH                  WET
SR-3 COUNTIES- BLACKFORD DELAWARE            WET
SR-18 COUNTIES- GRANT BLACKFORD JAY          WET
SR-26 COUNTIES- JAY RANDOLPH                 WET
SR-28 COUNTIES- DELAWARE RANDOLPH            WET
SR-32 COUNTIES- DELAWARE RANDOLPH            WET
WET
SR-67 COUNTIES- DELAWARE JAY                 
DISTRICT/52 SP INDIANAPOLIS
I-465 INDIANAPOLIS AREA                      DRY
I-65 INDIANAPOLIS AREA                       DRY
I-65 EDINBURGH TO INDIANAPOLIS               DRY
I-65 INDIANAPOLIS TO THORNTOWN               DRY
I-70 INDIANAPOLIS AREA                       DRY
I-70 INDIANAPOLIS TO MONROVIA                DRY
I-74 INDIANAPOLIS AREA                       DRY
OTHER US AND STATE ROADS                     DRY
SECONDARY ROADS                              DRY
----
DISTRICT/53 SP PUTNAMVILLE
I-74 INDIANAPOLIS TO JAMESTOWN               WET
I-70 BRAZIL TO MONROVIA                      WET
I-70 MONROVIA TO INDIANAPOLIS                WET
US-40 PLAINFIELD TO PUTNAMVILLE              WET
US-231 COUNTIES- PUTNAM                      WET
SR-37 MARTINSVILLE TO INDIANAPOLIS           WET
SR-67 MARTINSVILLE TO INDIANAPOLIS           WET
OTHER US AND STATE ROADS                     WET
SECONDARY ROADS                              WET
----
DISTRICT/51 SP PENDLETON
I-69 INDIANAPOLIS TO ANDERSON AREA           --I-70 INDIANAPOLIS TO KNIGHTSTOWN             --US-31 COUNTY- HAMILTON                       --OTHER US AND STATE ROADS                     --SECONDARY ROADS                              ----------------------
DISTRICT/41 SP CONNERSVILLE
I-70 KNIGHTSTOWN TO NEW CASTLE               WET
I-70 NEW CASTLE TO OHIO                      WET
SR-1 COUNTIES- WAYNE FAYETTE FRANKLIN        WET
SR-44 COUNTIES- RUSH FAYETTE UNION           WET
OTHER US AND STATE ROADS                     WET
SECONDARY ROADS                              WET
--
--------------
              SOUTHERN REGION
DISTRICT/42 SP VERSAILLES
I-74 ST PAUL EXIT TO OHIO STATE LINE         DRY
I-275 LAWRENCEBURG AREA                      DRY
US-50 HOLTON VERSAILLES AURORA LAWRENCEBURG  DRY
US-421 GREENSBURG OSGOOD VERSAILLES MADISON  DRY
SR-3 GREENSBURG WESTPORT DEPUTY              DRY
SR-62 DILLSBORO FRIENDSHIP MADISON HANOVER   DRY
SR-129 BATESVILE VERSAILES CROSS PLAINS VEVAYDRY
SR-350 OSGOOD MILAN MOORES HILL AURORA       DRY
OTHER US AND STATE ROADS                     DRY
DRY
SECONDARY ROADS                              
DISTRICT/43 SP SEYMOUR
I-65 EDINBURGH-COLUMBUS AREA                 WET
I-65 SEYMOUR-CROTHERSILLE AREA               WET
US-31 COUNTIES BARTHOLOMEW JACKSON           WET
US-50 COUNTIES JACKSON JENNINGS              WET
SR-3 COUNTY JENNINGS                         WET
OTHER US AND STATE ROADS                     WET
SECONDARY ROADS                              WET
------------
DISTRICT/45 SP SELLERSBURG
I-64 CAREFREE TO LANESVILLE                  DRY
I-64 LANESVILLE TO KENTUCKY                  DRY
I-65 KENTUCKY TO HENRYVILLE                  DRY
I-65 HENRYVILLE TO AUSTIN                    DRY
I-265 NEW ALBANY CLARKSVILLE JEFFERSONVILLE  DRY
OTHER US AND STATE ROADS                     DRY
SECONDARY ROADS                              DRY
------------
DISTRICT/35 SP EVANSVILLE
I-64 ILLINOIS TO EVANSVILLE                  --I-64 EVANSVILLE TO HOLLAND-DALE AREA         --I-164 EVANSVILLE AREA                        --US-41 COUNTIES- VANDERBURGH GIBSON           --US-41 COUNTY- KNOX                           --OTHER US AND STATE ROADS                     --SECONDARY ROADS                              --------------
DISTRICT/34 SP JASPER
I-64 HOLLAND TO CAREFREE                     WET
OTHER US AND STATE ROADS                     WET
SECONDARY ROADS                              WET
----------------------------
DISTRICT/33 SP BLOOMINGTON
SR-37 COUNTIES- MONROE LAWRENCE              NO ADVERSE ROAD
SR-45 COUNTIES- BROWN MONROE GREENE          NO ADVERSE  ROAD
SR-46 COUNTIES- BROWN MONROE OWEN            NO ADVERSE  ROAD
US-231 COUNTIES- OWEN GREENE                 NO ADVERSE  ROAD
US-50 COUNTIES- LAWRENCE                     NO ADVERSE  ROAD
SR-67 COUNTIES- GREENE OWEN                  NO ADVERSE  ROAD
OTHER US AND STATE ROADS                     NO ADVERSE  ROAD
SECONDARY ROADS                              NO ADVERSE  ROAD
--------
***** END OF RESPONSE *****</n2:ResponseText>
  </n2:NLETSResponseData>
</n2:NLETS>

Example 3: Road/Weather message received from National Weather Wire.

<n2:NLETS xmlns:nh2="http://www.nlets.org/niem/nlets-hdr/1.0" n2:version="4.00" xmlns:nc="http://niem.gov/niem/niem-core/2.0" xmlns:n2="http://www.nlets.org/niem/1.0">
  <n2:NLETSMessageHeader>
    <nh2:MessageKeyCodeText>HR</nh2:MessageKeyCodeText>
    <nh2:OriginatingORIID>WS0000000</nh2:OriginatingORIID>
    <nh2:DestinationORIID>AZNLETS47</nh2:DestinationORIID>
    <nh2:MessageReceiveDate>10/22/2019</nh2:MessageReceiveDate>
    <nh2:MessageReceiveTime>09:34</nh2:MessageReceiveTime>
    <nh2:MessageSendDate>10/22/2019</nh2:MessageSendDate>
    <nh2:MessageSendTime>09:34</nh2:MessageSendTime>
    <nh2:ReceiveMessageNumeric>00000</nh2:ReceiveMessageNumeric>
    <nh2:SendMessageNumeric>00779</nh2:SendMessageNumeric>
  </n2:NLETSMessageHeader>
  <n2:NLETSResponseData n2:key="HR">
    <n2:ResponseText>FXUS64 KMEG 151528 AFDMEG  Area Forecast Discussion National Weather Service Memphis TN 1028 AM CDT Mon Apr 15 2019
  .UPDATE... Beautiful weather is on tap for the Mid-South today. Temperatures have warmed into the 50s area wide and will approach 70F by mid- afternoon.
Clouds have moved east with the departing trough, so we'll maintain clear skies today.
Winds are currently light from the south but will increase this afternoon in response to a tightening pressure gradient as a trough and attendant upper- level jet eject into the Northern Plains.
Winds will increase to  10-15 mph this afternoon along and west of the Mississippi River  with gusts to 20 mph at times.
Southerly winds will relax a bit  overnight but warm advection and boundary layer mixing will keep  temperatures quite a bit warmer than this morning.
No big changes  were included in the forecast update.  Johnson  &amp;&amp;
.PREV DISCUSSION... /issued 416 AM CDT Mon Apr 15 2019/
DISCUSSION...  Currently...Weak surface highs pressure sits over the region with clear skies and light winds.
Good radiational cooling conditions helping temps fall into the 30s across parts of the Mid-South.
Expect frost across parts of the Mid-South especially locations  in the Frost advisory which covers much of West Tennessee.
Patchy fog is also occurring near the TN River and across North Mississippi.
Today through Wednesday...High pressure will prevail today with sunny skies and slightly below normal temperatures.
Return flow will commence along and west of the River this afternoon. As a  result expect warmer temps tonight with lows in the upper 40s and  lower 50s.
As the high moves east southerly flow will increase on  Tuesday pushing highs well into the 70s. Expect a breezy day  across the Delta.
Breezy conditions continue into Wednesday as  moisture continues to increase. Weak isentropic lift may result  in a few showers during the AM west of the MS River.
A weak upper  level disturbance combined with some instability could produce a  few thunderstorms west of the river Wednesday afternoon. Highs  will again be in the 70s.
Wednesday night through Thursday night...A potent upper level  system will move out of the SW U.S. Wednesday night.
Moisture and instability will increase across the lower MS Valley with  increasing shear as the upper trough pushes across the southern  plains.
Convection with severe weather potential will develop over the ARKLATEX and spread NE overnight...gradually weakening as it  moves into a less favorable environment.
A few strong to severe  storms are possible late Wednesday night mainly west of the MS  River. That first round will continue to spread east Thursday  morning and weaken.
Another round of convection will likely  develop across the area as a potent mid level shortwave rounds the base of the main upper trough and punches into the area during  the day on Thursday.
Of course details of severe weather chances  will depend on many things, like ongoing convection, how quickly  the surface system occludes and the strength/timing of the  shortwave etc.
Given the strong shear combined with a moist and  somewhat unstable boundary layer strong to severe storms will be  possible across the Mid-South Thursday.
Models are in good  agreement with moving most of the activity east of the Mid-South  by Thursday evening. Right now it looks like another 1.5 to 2.5  inches of rain possible with this event.
Friday and Friday night...A deep upper low will drop into the region by Friday with more showers and highs only in the 50s. Showers will begin tapering off Friday night with lows in the  40s.
Weekend...Looks sunny albeit a bit chilly on Saturday with strong NW flow on the backside of the departing upper low. Temps will climb into the 70s on Sunday.
SJM  &amp;&amp;  .AVIATION... /12Z TAFs/  VFR. Light winds becoming south at 6-11kts.
Higher gusts at JBR.  JAB  &amp;&amp;
.MEG WATCHES/WARNINGS/ADVISORIES... AR...None. MO...None. MS...None. TN...None.
&amp;&amp;  $$ 
    </n2:ResponseText>
  </n2:NLETSResponseData>
</n2:NLETS>

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Legacy (DEPRECATED)

Road Weather Legacy Specifications

This section provides format specifications and examples for Legacy Road/Weather transactions (HQ/HR).

Query Formats

Road/weather inquiries (HQ) do not have to be in a fixed format except for the time and date field preceding the text information.

The format for a road/weather inquiry is as follows.

Entry # Char. Explanation
HQ. 2 Message type followed by a period.
Message Header 3-27

Standard input message header, may include control
field and up to five 2 character state codes followed
by a period.

TXT 3 Fixed filed prefix to beginning of message.
CR,LF,DEL 3 Control characters (optional).
WEATHER 7

Used for further identification of inquiry request (with
message type HQ.). This field will not be edited by
Nlets but should be used for all inquires.

Response Formats

Road/weather responses (HR) do not have to be in a fixed format.

Following is the format a state should return to the sender if the information is unavailable:

Entry # Char. Explanation
HR. 2 Message type followed by a period.
Message Header 68-82 Standard output message header.
TXT 3 Fixed filed prefix to beginning of message.
CR,LF,DEL 3 Control characters (optional).
WEATHER INFORMATION
NOT AVAILABLE
33 Message notifying requesting agency that the
information requested is unavailable.
Road Weather Legacy Examples

Example 1: Road/Weather query sent by a user.

HQ.AZNLETS20.OK.TXT
WEATHER

Example 2: Road/Weather response received by a state.

HR.OKSUPV000

08:36 04/15/2019 06857
08:36 04/15/2019 00119 AZNLETS20
TXT
CURRENT WEATHER INFORMATION:

WEATHER REPORT FOR STATE OF OKLAHOMA

WEATHER UPDATES ARE NO LONGER RECEIVED BY OLETS

1015 CDT 01/06/19

CURRENT ROAD INFORMATION:

OKLAHOMA DRIVING CONDITIONS

NO REPORTS OF HAZARDOUS ROAD CONDITIONS AT THIS TIME

"HAVE A GREAT DAY FROM THE SOONER STATE"

1015 CDT 01/06/19

Example 3: Road/Weather message received from National Weather Wire.

HR.WS0000000

08:33 04/15/2019 00334
08:33 04/15/2019 00081 AZNLETS20
TXT
FXUS64 KMEG 151528 AFDMEG
Area Forecast Discussion National Weather Service Memphis TN 1028 AM CDT Mon Apr 15 2019
.UPDATE... Beautiful weather is on tap for the Mid-South today. Temperatures have warmed into the 50s area wide and will approach 70F by mid- afternoon.
Clouds have moved east with the departing trough, so we'll maintain clear skies today.
Winds are currently light from the south but will increase this afternoon in response to a tightening pressure gradient as a trough and attendant upper- level jet eject into the Northern Plains.
Winds will increase to 10-15 mph this afternoon along and west of the Mississippi River with gusts to 20 mph at times.
Southerly winds will relax a bit overnight but warm advection and boundary layer mixing will keep temperatures quite a bit warmer than this morning.
No big changes were included in the forecast update. Johnson &&
.PREV DISCUSSION... /issued 416 AM CDT Mon Apr 15 2019/
DISCUSSION... Currently...Weak surface highs pressure sits over the region with clear skies and light winds.
Good radiational cooling conditions helping temps fall into the 30s across parts of the Mid-South.
Expect frost across parts of the Mid-South especially locations in the Frost advisory which covers much of West Tennessee.
Patchy fog is also occurring near the TN River and across North Mississippi.
Today through Wednesday...High pressure will prevail today with sunny skies and slightly below normal temperatures. Return flow will commence along and west of the River this afternoon.
As a result expect warmer temps tonight with lows in the upper 40s and lower 50s. As the high moves east southerly flow will increase on Tuesday pushing highs well into the 70s.
Expect a breezy day across the Delta. Breezy conditions continue into Wednesday as moisture continues to increase.
Weak isentropic lift may result in a few showers during the AM west of the MS River.
A weak upper level disturbance combined with some instability could produce a few thunderstorms west of the river Wednesday afternoon. Highs will again be in the 70s.
Wednesday night through Thursday night...A potent upper level system will move out of the SW U.S. Wednesday night.
Moisture and instability will increase across the lower MS Valley with increasing shear as the upper trough pushes across the southern plains.
Convection with severe weather potential will develop over the ARKLATEX and spread NE overnight...gradually weakening as it moves into a less favorable environment.
A few strong to severe storms are possible late Wednesday night mainly west of the MS River. That first round will continue to spread east Thursday morning and weaken.
Another round of convection will likely develop across the area as a potent mid level shortwave rounds the base of the main upper trough and punches into the area during the day on Thursday.
Of course details of severe weather chances will depend on many things, like ongoing convection, how quickly the surface system occludes and the strength/timing of the shortwave etc.
Given the strong shear combined with a moist and somewhat unstable boundary layer strong to severe storms will be possible across the Mid-South Thursday.
Models are in good agreement with moving most of the activity east of the Mid-South by Thursday evening. Right now it looks like another 1.5 to 2.5 inches of rain possible with this event.
Friday and Friday night...A deep upper low will drop into the region by Friday with more showers and highs only in the 50s. Showers will begin tapering off Friday night with lows in the 40s.
Weekend...Looks sunny albeit a bit chilly on Saturday with strong NW flow on the backside of the departing upper low. Temps will climb into the 70s on Sunday.
SJM &&
.AVIATION... /12Z TAFs/
VFR. Light winds becoming south at 6-11kts. Higher gusts at JBR.
JAB &&
.MEG WATCHES/WARNINGS/ADVISORIES...
AR...None. MO...None. MS...None. TN...None.
&& $$

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Downloads

Download HQ Schema

Download HR Schema

Download HR Stylesheet

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