Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 138, NWS Fort Worth, TX

May 2, 20094 counties in Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 2, 2009, 4:00 PM CDT for 4 counties in Texas. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 2, 2009, 4:00 PM CDT (21:00 UTC)
Expired: May 2, 2009, 4:45 PM CDT
In force: 45 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

Counties Erath County, TX, Hood County, TX, Johnson County, TX, Parker County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 49 km from the middle of the area, began a volume at 21:02 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 2, 1:56 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 9.0 hours before the alert went out and 64 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: 1140 J/kg
Mixed-layer CIN: -217 J/kg
Mixed-layer LCL: 504 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 194 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.6

Open this sounding in Storm Lab

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 2, 3:42 PM CDT, 18 minutes earlier.

Area forecast discussion, May 2, 3:42 PM CDT, 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
342 PM CDT SAT MAY 2 2009

.DISCUSSION...
CONVECTION ORGANIZING INTO MCS ACROSS EASTERN PART OF DFW METROPLEX
AT THIS TIME WILL CONTINUE MOVING EAST AND NORTHEAST LATE THIS
AFTERNOON AND EVENING. WILL KEEP FLASH FLOOD WATCH AREA
UNCHANGED...BUT WILL END THE WATCH BY NOON ON SUNDAY WITH SLIGHTLY
FASTER PROGRESSION OF SHORTWAVE HELPING TO END HEAVY RAIN THREAT
SUNDAY MORNING.

NEARLY ALL OF THE SIGNIFICANT CONVECTION THIS AFTERNOON HAS BEEN
OCCURRING JUST BEHIND THE FRONTAL BOUNDARY. HOWEVER...AXIS OF
STRONG INSTABILITY AND MODERATELY STRONG MASS CONVERGENCE STILL
ARGUES FOR DEVELOPMENT NEAR THE FRONT AS FAR SOUTH AS HILLSBORO
AND WACO BY THIS EVENING. ANY STORMS THAT DEVELOP NEAR THE FRONT
IN THESE AREAS WOULD LIKELY BECOME SEVERE...WITH TORNADO BOX 226
CONTINUING ACROSS MOST OF THAT AREA THROUGH 7 PM CDT.

CONTINUED RE-DEVELOPMENT OF SHOWERS AND THUNDERSTORMS LIKELY
BEHIND THE FRONT THROUGH THE OVERNIGHT HOURS AS SHORTWAVE ENERGY
MOVES INTO WEST TEXAS. COVERAGE OF THE LATE NIGHT ACTIVITY LIKELY
TO BE GREATEST ACROSS AREAS NORTH OF INTERSTATE 20.

DRY WEATHER EXPECTED SUNDAY NIGHT INTO TUESDAY MORNING AS DRIER
AIR SPREADS INTO THE AREA BEHIND THE FRONT AND UPPER SYSTEM. THE
COOLEST NIGHT IS FORECAST FOR SUNDAY NIGHT WITH 50S EXPECTED IN
MOST AREAS BY MONDAY MORNING.

NEXT CHANCE OF RAIN WILL BE TUES AFTN INTO WEDNESDAY AND AGAIN
LATE FRIDAY INTO SATURDAY.   09

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  60  71  55  76  61 /  90  70   5   0   0
WACO, TX              63  77  57  77  62 /  60  60  10   0   0
PARIS, TX             59  68  53  73  56 / 100  80  10   0   0
DENTON, TX            58  69  53  75  60 /  90  70   5   0   0
MCKINNEY, TX          59  70  55  75  59 / 100  70  10   0   0
DALLAS, TX            60  71  56  76  61 /  90  70  10   0   0
TERRELL, TX           61  71  57  75  59 / 100  80  10   0   0
CORSICANA, TX         63  75  58  77  59 /  90  70  10   0   0
TEMPLE, TX            65  79  60  79  63 /  60  50  10   0   0

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH SUNDAY MORNING FOR TXZ091>095-100>107-
115>123.

&&

Hazardous weather outlook, May 2, 4:00 PM CDT, 0 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
400 PM CDT SAT MAY 2 2009

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-031100-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
400 PM CDT SAT MAY 2 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT.
STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS NORTH TEXAS
THROUGH THE EVENING HOURS. LARGE HAIL...DAMAGING WINDS...AND
HEAVY RAIN WILL BE THE PRIMARY HAZARDS. IN ADDITION...THERE IS THE
POTENTIAL FOR A STORM TO BECOME TORNADIC...PARTICULARLY NEAR OR
SOUTH OF A SLOW-MOVING COLD FRONT.

THUNDERSTORMS WILL CONTINUE OVERNIGHT. THE GREATEST LIKELIHOOD OF
HEAVY RAIN WILL BE NORTHEAST OF THE DALLAS/FORT WORTH METROPLEX.
A FLASH FLOOD WATCH REMAINS IN EFFECT GENERALLY ALONG AND NORTH OF
THE I-20 CORRIDOR.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
THE THREAT OF SEVERE THUNDERSTORMS AND HEAVY RAINFALL WILL
CONTINUE ON SUNDAY...WITH THE FLASH FLOOD WATCH REMAINING IN
EFFECT THROUGH NOON. THE THUNDERSTORMS WILL RAPIDLY COME TO AN END
SUNDAY AFTERNOON.

THUNDERSTORMS WILL RETURN TO THE FORECAST TUESDAY AFTERNOON...AND
CHANCES WILL CONTINUE THROUGH WEDNESDAY NIGHT AS A COLD FRONT
MOVES THROUGH NORTH TEXAS. THUNDERSTORM CHANCES WILL RETURN AGAIN
IN TIME FOR THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE REQUESTED THROUGH THE EVENING
HOURS.

25

In the hours before

Local storm report, May 2, 2:49 PM CDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
249 PM CDT SAT MAY 02 2009

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

0248 PM     HAIL             BENBROOK                32.68N  97.46W
05/02/2009  E1.00 INCH       TARRANT            TX   AMATEUR RADIO

            BENBROOK

Local storm report, May 2, 2:53 PM CDT, 1 hour 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
253 PM CDT SAT MAY 02 2009

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

0247 PM     HAIL             10 SE CELINA            33.22N  96.66W
05/02/2009  E1.00 INCH       COLLIN             TX   LAW ENFORCEMENT

Local storm report, May 2, 3:05 PM CDT, 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
305 PM CDT SAT MAY 02 2009

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

0305 PM     HAIL             ARLINGTON               32.69N  97.13W
05/02/2009  E0.75 INCH       TARRANT            TX   AMATEUR RADIO

Special weather statement, May 2, 3:06 PM CDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
306 PM CDT SAT MAY 2 2009

TXZ091-102-022030-
MONTAGUE TX-WISE TX-
306 PM CDT SAT MAY 2 2009

...SIGNIFICANT WEATHER ADVISORY FOR...
  SOUTHEASTERN MONTAGUE COUNTY
  NORTHWESTERN WISE COUNTY

AT 307 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 10 MILES SOUTHEAST OF BOWIE...MOVING EAST AT 45
MPH.

CITIES IN THE PATH OF THIS STORM INCLUDE ALVORD AND FORESTBURG.

PEA-SIZED HAIL AND WIND GUSTS TO 40 MPH CAN BE EXPECTED FROM THIS
STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CDT SATURDAY EVENING
FOR NORTHEASTERN TEXAS.

LAT...LON 3344 9748 3343 9740 3331 9783 3348 9791
      3363 9748
TIME...MOT...LOC 2007Z 249DEG 39KT 3342 9777

85/NH

Local storm report, May 2, 3:09 PM CDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
309 PM CDT SAT MAY 02 2009

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

0308 PM     HAIL             4 SE HUCKABAY           32.30N  98.25W
05/02/2009  E0.88 INCH       ERATH              TX   LAW ENFORCEMENT

            NICKEL HAIL 4 SE OF HUCKABAY

Local storm report, May 2, 3:50 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
350 PM CDT SAT MAY 02 2009

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

0345 PM     FUNNEL CLOUD     ROYSE CITY              32.98N  96.33W
05/02/2009                   ROCKWALL           TX   TRAINED SPOTTER

            STRONG ROTATION AND FUNNEL REPORTED FROM SPOTTER IN
            ROYSE CITY.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 1, 8:31 PM CDT	River Flood Warning	FWD	Jack	12 hr
May 2, 1:07 PM CDT	Special Weather Statement	FWD	Wise	23 min
May 2, 1:17 PM CDT	Severe Thunderstorm Warning	FWD	Wise	43 min
May 2, 1:31 PM CDT	Special Weather Statement	FWD	Hood	29 min
May 2, 1:44 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Parker	61 min
May 2, 1:50 PM CDT	Special Weather Statement	FWD	Denton	25 min
May 2, 2:03 PM CDT	Special Weather Statement	FWD	Tarrant	27 min
May 2, 2:19 PM CDT	Severe Thunderstorm Warning	FWD	Hood, Johnson, Tarrant	56 min
May 2, 2:27 PM CDT	Special Weather Statement	FWD	Ellis	33 min
May 2, 2:32 PM CDT	Special Weather Statement	FWD	Denton, Wise	58 min
May 2, 2:41 PM CDT	Severe Thunderstorm Warning	FWD	Ellis	49 min
May 2, 2:50 PM CDT	Areal Flood Advisory	FWD	Denton, Tarrant	115 min
May 2, 2:53 PM CDT	Severe Thunderstorm Warning	FWD	Erath	52 min
May 2, 2:57 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Denton	63 min
May 2, 3:06 PM CDT	Special Weather Statement	FWD	Montague	24 min
May 2, 3:06 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	39 min
May 2, 3:20 PM CDT	Areal Flood Advisory	FWD	Collin, Dallas, Grayson	3 hr
May 2, 3:22 PM CDT	Severe Thunderstorm Warning	FWD	Hood	38 min
May 2, 3:40 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Hunt, Kaufman, Rains, Rockwall	50 min
May 2, 3:44 PM CDT	Severe Thunderstorm Warning	FWD	Dallas	14 min
May 2, 3:47 PM CDT	Tornado Warning	FWD	Collin, Hunt, Rockwall	43 min
May 2, 4:04 PM CDT	Areal Flood Advisory	FWD	Fannin, Hunt, Rockwall	3 hr
May 2, 4:08 PM CDT	Severe Thunderstorm Warning	FWD	Delta, Hopkins, Lamar, Rains	52 min
May 2, 4:24 PM CDT	Tornado Warning	FWD	Delta, Hopkins, Lamar	51 min
May 2, 4:38 PM CDT	Severe Thunderstorm Warning	FWD	Johnson, Parker, Tarrant	67 min
May 2, 4:39 PM CDT	Areal Flood Advisory	FWD	Delta, Hopkins, Lamar, Rains	3 hr
May 2, 4:53 PM CDT	Severe Thunderstorm Warning	FWD	Bosque, Erath, Hood, Somervell	67 min
May 2, 4:59 PM CDT	Areal Flood Advisory	FWD	Tarrant	2 hr
May 2, 5:18 PM CDT	Flash Flood Warning	FWD	Tarrant	3 hr
May 2, 5:42 PM CDT	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Hood, Johnson, Parker, Tarrant	63 min
May 2, 5:52 PM CDT	River Flood Warning	FWD	Dallas	5 hr
May 2, 6:02 PM CDT	Flash Flood Warning	FWD	Dallas	3 hr
May 2, 6:06 PM CDT	Severe Thunderstorm Warning	FWD	Denton	54 min
May 2, 6:44 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Hunt, Kaufman, Rockwall	61 min
May 2, 6:58 PM CDT	Flash Flood Warning	FWD	Collin, Hunt, Kaufman, Rockwall	4 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2009 Every severe thunderstorm warning in 2009

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.