Legacy Text Examples - Road-Weather Transactions (HQ/HR)

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.
&& $$