Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 243, NWS Shreveport, LA

June 20, 2007Gregg County, Rusk County, Texas

NWS Shreveport, LA issued this severe thunderstorm warning at Jun 20, 2007, 6:25 PM CDT for Gregg County, Rusk County, Texas. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 20, 2007, 6:25 PM CDT (23:25 UTC)
Expired: Jun 20, 2007, 7:30 PM CDT
In force: 65 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

Counties Gregg County, TX, Rusk County, TX

The radar

The Shreveport radar (KSHV), 93 km from the middle of the area, began a volume at 23:26 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.

What was reported inside it

Time	Report	Where	Remark
Jun 20, 6:30 PM CDT	TSTM WND DMG	10 N Henderson, TX	TREES DOWN NEAR THE COMMUNITY OF MONROE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 5 minutes after it went out.

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, 11.4 hours before the alert went out and 102 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: 3027 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 567 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KSHV 202325
SVRSHV
TXC183-401-210030-
/O.NEW.KSHV.SV.W.0243.070620T2325Z-070621T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
625 PM CDT WED JUN 20 2007

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GREGG COUNTY IN NORTHEAST TEXAS
  RUSK COUNTY IN NORTHEAST TEXAS

* UNTIL 730 PM CDT

* AT 621 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
  SOUTHEAST OF KILGORE...AND MOVING NORTH AT 5 TO 10  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  KILGORE BY 655 PM CDT...
  LONGVIEW...WHITE OAK AND 7 MILES SOUTHEAST OF CLARKSVILLE CITY BY
  730 PM CDT...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS 
IMMEDIATELY. LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS. 
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE 
STRUCK BY LIGHTNING.

LAT...LON 3227 9488 3226 9473 3263 9472 3253 9495

$$

06

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 Jun 20, 2:51 PM CDT, 3 hours 34 minutes earlier.

Area forecast discussion, Jun 20, 2:51 PM CDT, 3 hours 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
251 PM CDT WED JUN 20 2007

.DISCUSSION...

KSHV RADAR SHOWS CONVECTION DEVELOPING ACROSS THE FOUR STATE
AREA...IN A RICH CONCENTRATION OF THETA-E AS PER RTMA ANALYSIS.
THIS HAS RESULTED IN SBCAPES IN EXCESS OF 4000 J/KG CENTERED OVER
KSHV.  ELSEWHERE...PLENTY OF REMNANT BOUNDARIES REMAIN TO INCLUDE
ISOLATED CONVECTION AREA-WIDE THROUGH AT LEAST SUNSET.
OTHERWISE...CWA WILL REMAIN ON THE EASTERN PERIPHERY OF AN UPPER
LEVEL RIDGE THROUGH THE WEEKEND.  LATEST MODEL RUNS HAVE CHANGED
SIGNIFICANTLY OVER THE PAST 24 HRS...W/THE GFS PLACING THE RIDGE
FURTHER WEST.  THIS WILL ALLOW MORE SHORTWAVES ROTATING INTO THE
AREA EACH DAY...BUT NOTHING TO REALLY HANG A HAT ON.  THUS...MINIMAL
POPS IN THE SHORT TERM.  NEAR THE END OF THE WEEKEND...AN UPPER
LEVEL LOW BEGINS BUILDING OVER TEXAS...BRINGING A CHANCE OF RAIN TO
THE OK-ARKLATEX BEGINNING MONDAY NIGHT.  THIS WILL BRING A LITTLE
RELIEF FROM THE HEAT BEGINNING TUESDAY...WHICH MAY SEE TEMPS
ACTUALLY SLIGHTLY BELOW NORMAL.  UNTIL THEN...GUIDANCE REMAINS TOO
COOL...AND WE/LL STAY ABOVE IT.

&&

.AVIATION...

CONVECTION HAS INITIATED IN THE VCNTY OF SHV THIS AFTN WHERE SURFACE
BASED INSTABILITY IS MAXIMIZED PER 19Z MESOANALYSIS. EXPECT VFR
CONDS THROUGH THIS AFTN EXCEPT WHERE CONVECTION WILL BE OCCURRING
WHICH WILL RESULT IN CIGS OF 1 TO 3K FT AND VSBYS IN THE 3 TO 5SM
RANGE. LATEST FCST ISSUANCE IS CARRYING VCTS AS EXPECTATIONS ARE FOR
UNORGANIZED STORMS THIS AFTN. CI CANOPY SHOULD CONT INTO TONIGHT./02/

&&

.PRELIMINARY POINT TEMPS/POPS...
SHV  73  96  71  97 /  20  20  10  20
MLU  66  95  64  97 /  20  10  10  10
DEQ  70  91  67  94 /  20  20  10  10
TXK  70  92  69  96 /  20  20  10  10
ELD  68  95  64  97 /  20  20  10  10
TYR  73  91  73  94 /  20  20  20  20
GGG  72  94  69  96 /  20  20  20  20
LFK  72  93  70  96 /  20  10  20  20

&&

.SHV WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
LA...NONE.
OK...NONE.
TX...NONE.
&&

02/44

Hazardous weather outlook, Jun 20, 12:00 PM CDT, 6 hours 25 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SHREVEPORT LA
1200 PM CDT WED JUN 20 2007

ARZ050-051-059>061-070>073-LAZ001>006-010>014-017>022-OKZ077-TXZ096-
097-108>112-124>126-136>138-149>153-165>167-211100-
ANGELINA-BIENVILLE-BOSSIER-BOWIE-CADDO-CALDWELL-CAMP-CASS-CHEROKEE-
CLAIBORNE-COLUMBIA-DE SOTO-FRANKLIN-GRANT-GREGG-HARRISON-HEMPSTEAD-
HOWARD-JACKSON-LA SALLE-LAFAYETTE-LINCOLN-LITTLE RIVER-MARION-
MCCURTAIN-MILLER-MORRIS-NACOGDOCHES-NATCHITOCHES-NEVADA-OUACHITA-
PANOLA-RED RIVER LA-RED RIVER TX-RUSK-SABINE LA-SABINE TX-
SAN AUGUSTINE-SEVIER-SHELBY-SMITH-TITUS-UNION AR-UNION LA-UPSHUR-
WEBSTER-WINN-WOOD-
1200 PM CDT WED JUN 20 2007

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

.DAY ONE...THIS AFTERNOON AND TONIGHT...

SCATTERED THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND TONIGHT
ACROSS THE FOUR STATE AREA.  THESE STORMS ARE NOT EXPECTED TO BECOME
SEVERE.  HOWEVER...STORMS WILL BE ACCOMPANIED BY FREQUENT
LIGHTNING...BRIEF GUSTY WINDS TO 50 MPH...SMALL HAIL...AND UP TO 2
INCHES OF RAINFALL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...

MONDAY NIGHT THROUGH WEDNESDAY...AN UPPER LEVEL LOW PRESSURE SYSTEM
CENTERED OVER EAST TEXAS WILL RESULT IN SCATTERED THUNDERSTORMS
OVER THE OK-ARKLATEX.  THESE STORMS ARE NOT EXPECTED TO BECOME
SEVERE.  HOWEVER...STORMS WILL BE ACCOMPANIED BY FREQUENT
LIGHTNING...BRIEF GUSTY WINDS TO 35 MPH...SMALL HAIL...AND VERY
HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER...EMERGENCY MANAGER...AND HAM RADIO OPERATOR
ACTIVATION...IS NOT LIKELY THIS AFTERNOON OR TONIGHT.

44

In the hours before

Local storm report, Jun 20, 5:24 PM CDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
524 PM CDT WED JUN 20 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0345 PM     LIGHTNING        BENTON                  34.57N 92.58W
06/20/2007                   SALINE             AR   PUBLIC

            BENTON FIRE DEPARTMENT REPORTING TWO HOMES STRUCK BY
            LIGHTNING AND ONE ON FIRE AT 345 PM. NO REPORT ON
            INJURIES.

0408 PM     TSTM WND DMG     6 SE LINDEN             32.95N 94.29W
06/20/2007                   CASS               TX   LAW ENFORCEMENT

            TREES DOWN ON HWY 125 HALF WAY BETWEEN LINDEN AND
            KILDARE.

0440 PM     TSTM WND DMG     PITTSBURG               33.00N 94.97W
06/20/2007                   CAMP               TX   LAW ENFORCEMENT

            TREES DOWN JUST WEST AND EAST OF TOWN.

0440 PM     FLASH FLOOD      PITTSBURG               33.00N 94.97W
06/20/2007                   CAMP               TX   LAW ENFORCEMENT

            SEVERAL ROADS UNDERWATER ACROSS THE COUNTY.

0415 PM     FLASH FLOOD      TALCO                   33.36N 95.10W
06/20/2007                   TITUS              TX   LAW ENFORCEMENT

            HWY 271 CLOSED BECAUSE OF HIGH WATER.

&&

13

Local storm report, Jun 20, 5:31 PM CDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
531 PM CDT WED JUN 20 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     TSTM WND DMG     GILMER                  32.73N 94.95W
06/20/2007                   UPSHUR             TX   LAW ENFORCEMENT

            SEVERAL TREES AND POWERLINES DOWNED THROUGHOUT THE
            COUNTY.

&&

13

Local storm report, Jun 20, 5:47 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
547 PM CDT WED JUN 20 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0500 PM     HAIL             LONE STAR               32.94N 94.71W
06/20/2007  E0.75 INCH       MORRIS             TX   LAW ENFORCEMENT

0505 PM     TSTM WND DMG     OMAHA                   33.18N 94.74W
06/20/2007                   MORRIS             TX   LAW ENFORCEMENT

            TREES DOWN IN THE OMAHA AND NAPLES AREA.

0525 PM     FLASH FLOOD      OMAHA                   33.18N 94.74W
06/20/2007                   MORRIS             TX   LAW ENFORCEMENT

            FLASH FLOODING IN THE OMAHA AND NAPLES AREA RESULTING IN
            SOME STREET CLOSURES.

0535 PM     FLASH FLOOD      SHREVEPORT              32.47N 93.80W
06/20/2007                   CADDO              LA   LAW ENFORCEMENT

            FLOODING ON PRESTON ROAD AND HWY 89.

&&

13

Local storm report, Jun 20, 5:55 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
555 PM CDT WED JUN 20 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0455 PM     TSTM WND DMG     PLAIN DEALING           32.91N 93.70W
06/20/2007                   BOSSIER            LA   LAW ENFORCEMENT

            TRRES DOWN NEAR TOWN.

0534 PM     FLASH FLOOD      PLAIN DEALING           32.91N 93.70W
06/20/2007                   BOSSIER            LA   LAW ENFORCEMENT

            HIGH WATER REPORTED NEAR HWY 162 AND SEVEN PINES AS WELL
            AS OLD PLAIN DEALING ROAD.

&&

13

Local storm report, Jun 20, 6:09 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
609 PM CDT WED JUN 20 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0600 PM     TSTM WND DMG     8 NW HALLSVILLE         32.59N 94.67W
06/20/2007                   HARRISON           TX   LAW ENFORCEMENT

            TREES DOWN JUST WEST OF HARLETON.

&&

13

Local storm report, Jun 20, 6:24 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
624 PM CDT WED JUN 20 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0533 PM     TSTM WND DMG     MAUD                    33.33N 94.34W
06/20/2007                   BOWIE              TX   LAW ENFORCEMENT

            TREES AND POWERLINES DOWN.

0535 PM     TSTM WND DMG     7 E HOOKS               33.47N 94.16W
06/20/2007                   BOWIE              TX   LAW ENFORCEMENT

            TREES AND POWERLINES DOWN IN THE REDLICK COMMUNITY

0535 PM     TSTM WND DMG     TEXARKANA               33.44N 94.07W
06/20/2007                   BOWIE              TX   LAW ENFORCEMENT

            TREES AND POWERLINES DOWN NEAR STATE LINE ROAD.

0455 PM     TSTM WND DMG     SHREVEPORT              32.47N 93.80W
06/20/2007                   CADDO              LA   NWS EMPLOYEE

            POWERLINES DOWN ON YOUREE AND 70TH STREET.

&&

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 4:02 PM CDT	Severe Thunderstorm Warning	SHV	Franklin, Titus	43 min
Jun 20, 4:03 PM CDT	Severe Thunderstorm Warning	SHV	Cass	57 min
Jun 20, 4:40 PM CDT	Flash Flood Warning	SHV	Titus	4 hr
Jun 20, 4:49 PM CDT	Flash Flood Warning	SHV	Camp	4 hr
Jun 20, 4:54 PM CDT	Severe Thunderstorm Warning	SHV	Upshur	51 min
Jun 20, 5:00 PM CDT	Severe Thunderstorm Warning	SHV	Morris	45 min
Jun 20, 5:05 PM CDT	Flash Flood Warning	SHV	Morris	4 hr
Jun 20, 5:32 PM CDT	Severe Thunderstorm Warning	SHV	Bowie	58 min
Jun 20, 5:43 PM CDT	Flash Flood Warning	SHV	Upshur	4 hr
Jun 20, 5:59 PM CDT	Severe Thunderstorm Warning	SHV	Harrison	61 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007 Every severe thunderstorm warning in 2007

Sources

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