Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 177, NWS Shreveport, LA

May 14, 2003Franklin County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at May 14, 2003, 7:34 AM CDT for Franklin County, Texas. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 14, 2003, 7:34 AM CDT (12:34 UTC)
Expired: May 14, 2003, 8:00 AM CDT
In force: 26 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Franklin County, TX

The radar

The Shreveport radar (KSHV), 158 km from the middle of the area, began a volume at 12:36 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 0.6 hours before the alert went out and 163 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 480 J/kg
Mixed-layer CIN: -383 J/kg
Mixed-layer LCL: 842 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

142 
WUUS54 KSHV 141234
SVRSHV
TXC159-141300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
734 AM CDT WED MAY 14 2003

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FRANKLIN COUNTY IN NORTHEAST TEXAS

* UNTIL 800 AM CDT

* AT 734 AM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTH CENTRAL FRANKLIN
  COUNTY...OR ABOUT 8 MILES NORTH OF MOUNT VERNON...MOVING EAST AT 35
  MPH.

THIS THUNDERSTORM WILL PRODUCE LARGE HAIL UP TO ONE AND A HALF
INCHES IN DIAMETER.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE
THUNDERSTORM WARNING FOR...
  FRANKLIN COUNTY IN NORTHEAST TEXAS
UNTIL 800 AM CDT.

LAT...LON 3338 9512 3320 9514 3323 9529 3338 9525

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 14, 3:10 AM CDT, 4 hours 24 minutes earlier.

Area forecast discussion, May 14, 3:10 AM CDT, 4 hours 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
310 AM CDT WED MAY 14 2003

UPPER LOW OVER THE NORTHERN PLAINS THIS MORNING TO MOVE
TO OHIO VALLEY AS NEXT SHORT WAVE MOVES TO THE TEXAS
PANHANDLE BY 12Z FRI...IN THE NEAR TERM SEVERAL UPPER
DISTURBANCES TO MOVE ACROSS IN THE WEST NORTH FLOW.
THE FIRST ONE MOVES ACROSS OK AND INTO AR TODAY...WITH
A WEAKER VORT MAX TO MOVE ACROSS NORTH TEXAS TONIGHT.
OLD BOUNDARY THIS MORNING EXTEND FROM SOUTHERN ARKANSAS
NORTHWEST INTO OK. THE BOUNDARY WILL MOVE A LITTLE SOUTH
TODAY...PUSHED BY MCS THAT IS DEVELOPING OVER OK THIS
MORNING...THIS COMPLEX SHOULD AT LEAST MAKE IT INTO
SOUTHEAST OK AND SOUTHWEST AR THIS MORNING...POSSIBLY
INTO NORTHWEST LA BEFORE DYING BY LATE MORNING OR EARLY
AFTERNOON. STORMS WILL LIKELY DEVELOP OVER THE RED RIVER
VALLEY OF NORTHEAST TEXAS AND SOUTHEAST OKLAHOMA BY LATE
AFTN OR EARLY EVENING AS THERE SHOULD BE SOME BREAKS IN
CLOUDS FOR THE SUN TO GET THINGS GOING AGAIN...THEN STORMS
ARE POSSIBLE AGAIN TONIGHT...AND AGAIN THU AFTN. WILL HAVE
SEVERE WORDING IN FORECAST AT LEAST NORTH HALF OF AREA TODAY
AND TONIGHT AND MENTION OF HEAVY RAIN NORTH FOR MCS MAINLY THIS
MORNING.

IV

PRELIMS...

SHV 83/70/87/72/86 4422
MLU 81/69/87/71/86 3422
TXK 80/69/85/70/84 5443
TYR 86/71/87/72/87 3322
LFK 88/70/89/72/88 2121

.SHV...NONE.

Hazardous weather outlook, May 14, 6:00 AM CDT, 1 hour 34 minutes before

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-141700-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
600 AM CDT WED MAY 14 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST OKLAHOMA...NORTHEAST
TEXAS...SOUTHWEST ARKANSAS...NORTHWEST AND NORTH CENTRAL LOUISIANA.

.DAY ONE...TODAY AND TONIGHT...
THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THIS
MORNING ACROSS NORTHEAST TEXAS...SOUTHEAST OKLAHOMA AND
SOUTHWEST ARKANSAS. A COMPLEX OF STRONG TO SEVERE STORMS
OVER SOUTHERN OKLAHOMA AND NORTH TEXAS WILL MOVE INTO THE
AREA THIS MORNING. SOME OF STORMS WILL PRODUCE LARGE HAIL
AND DAMAGING WINDS. STORMS ARE EXPECTED TO DEVELOP AGAIN THIS
AFTERNOON ALONG THE RED RIVER VALLEY OF NORTHEAST TEXAS AND
SOUTHEAST OKLAHOMA AND MOVE SOUTHEAST INTO NORTH LOUISIANA AND
SOUTHWEST ARKANSAS. THEN LATER TONIGHT STORMS MAY ONCE AGAIN
DEVELOP OVER NORTH LOUISIANA...NORTHEAST TEXAS AND SOUTHERN
ARKANSAS. THE MAIN THREAT OF SEVERE WEATHER WILL BE LARGE HAIL
AND DAMAGING WINDS...WITH ISOLATED TORNADOES POSSIBLE. THE STORMS
WILL GENERALLY BE ALONG AND NORTH OF THE INTERSTATE 20 CORRIDOR.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
THERE IS A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THURSDAY THROUGH
SATURDAY...GENERALLY NORTH OF INTERSTATE 20. OTHERWISE NO HAZARDOUS
WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...
ACTIVATION OF EMERGENCY MANAGERS...SKYWARN NETWORKS...AND STORM
SPOTTERS MAY BE NEEDED TODAY OR TONIGHT.

In the hours before

Local storm report, May 14, 7:17 AM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT, LA
717 AM CDT WED MAY 14 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1000 PM    FOUKE                     AR   .88 INCH HAIL
05/13/03   MILLER                         REPORT FROM GENERAL PUBLIC

1100 PM    ATHENS                    LA   1.75 INCH HAIL
05/13/03   CLAIBORNE                      REPORT FROM GENERAL PUBLIC

Local storm report, May 14, 7:25 AM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT, LA
725 AM CDT WED MAY 14 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1130 PM    1 N HOMER                 LA   1.00 INCH HAIL
05/13/03   CLAIBORNE                      FROM GENERAL PUBLIC

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 13, 9:48 PM CDT	Severe Thunderstorm Warning	SHV	Marion	42 min
May 13, 10:05 PM CDT	Tornado Warning	SHV	Marion	40 min
May 14, 7:41 AM CDT	Severe Thunderstorm Warning	SHV	Titus	34 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every severe thunderstorm warning in 2003

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.