Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 111, NWS Fort Worth, TX

April 23, 2011Grayson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 23, 2011, 8:10 PM CDT for Grayson County, Texas. It was in force for 50 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: Apr 23, 2011, 8:10 PM CDT (01:10 UTC)
Expired: Apr 23, 2011, 9:00 PM CDT
In force: 50 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Grayson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 151 km from the middle of the area, began a volume at 01:12 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 23, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 1.2 hours before the alert went out and 125 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: 2261 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1738 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 138 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

596 
WUUS54 KFWD 240110
SVRFWD
TXC181-240200-
/O.NEW.KFWD.SV.W.0111.110424T0110Z-110424T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
810 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN GRAYSON COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 900 PM CDT

* AT 810 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 4 MILES
  SOUTHWEST OF POTTSBORO...AND MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  POTTSBORO AND KNOLLWOOD AROUND 815 PM
  DENISON AROUND 820 PM
  EISENHOWER STATE PARK AND BELLS AROUND 825 PM
  HENDRIX AROUND 835 PM

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO A STURDY SHELTER AND STAY AWAY FROM
WINDOWS UNTIL THE STORM HAS PASSED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM SATURDAY
EVENING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3395 9689 3386 9685 3388 9679 3384 9676
      3385 9669 3392 9667 3391 9659 3384 9659
      3383 9651 3378 9648 3379 9642 3375 9637
      3356 9637 3356 9693 3396 9694
TIME...MOT...LOC 0110Z 234DEG 31KT 3373 9670

$$

2 follow-up statements

140 
WWUS54 KFWD 240131
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
831 PM CDT SAT APR 23 2011

TXC181-240200-
/O.CON.KFWD.SV.W.0111.000000T0000Z-110424T0200Z/
GRAYSON TX-
831 PM CDT SAT APR 23 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR NORTHERN GRAYSON COUNTY...

AT 831 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
EISENHOWER STATE PARK...MOVING NORTHEAST AT 35 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR NORTHEASTERN TEXAS.

&&

LAT...LON 3395 9689 3386 9685 3388 9679 3384 9676
      3385 9669 3392 9667 3391 9659 3384 9659
      3383 9651 3378 9648 3379 9642 3375 9637
      3356 9637 3356 9693 3396 9694
TIME...MOT...LOC 0131Z 234DEG 31KT 3384 9652

$$

758 
WWUS54 KFWD 240151
SVSFWD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
851 PM CDT SAT APR 23 2011

TXC181-240202-
/O.EXP.KFWD.SV.W.0111.000000T0000Z-110424T0200Z/
GRAYSON TX-
851 PM CDT SAT APR 23 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN GRAYSON COUNTY
EXPIRES AT 900 PM CDT...

AT 852 PM CDT THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING
WEAKENED AND WAS NO LONGER SEVERE.

RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
SATURDAY EVENING FOR NORTHEASTERN TEXAS.

LAT...LON 3395 9689 3386 9685 3388 9679 3384 9676
      3385 9669 3392 9667 3391 9659 3384 9659
      3383 9651 3378 9648 3379 9642 3375 9637
      3356 9637 3356 9693 3396 9694
TIME...MOT...LOC 0152Z 234DEG 31KT 3395 9634

$$

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 Apr 23, 7:56 PM CDT, 14 minutes earlier.

Area forecast discussion, Apr 23, 7:56 PM CDT, 14 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE FORT WORTH TX
756 PM CDT SAT APR 23 2011

.AVIATION...
/00Z TAFS/

CONCERNS...STORMS AND LOW CEILINGS.

BROKEN LINE OF SEVERE STORMS CONTINUES TO THE WEST AND NORTHWEST
OF METRO TERMINALS. INDIVIDUAL CELLS ARE MOVING NORTHEAST...BUT
THE LINE MAY MAKE GRADUAL PROGRESS TO THE EAST...IMPACTING METRO
TAF SITES LATER THIS EVENING. HAIL WOULD BE THE PRIMARY CONCERN
WITH ANY STORMS THAT AFFECT TERMINALS. DEPARTURES/ARRIVALS TO/FROM
THE NORTH AND WEST WILL CONTINUE TO BE SIGNIFICANTLY IMPACTED
THIS EVENING.

FWS VWP AND FWD RAOB SHOWING SOUTH WINDS OF 35-40KTS AT 2-3KFT
AGL. REMAINS TO BE SEEN IF STORMS WILL DISRUPT LLJ ENOUGH TO DELAY
ARRIVAL OF STRATUS TONIGHT. PUSHED BACK ARRIVAL AN HOUR WITH 00Z
ISSUANCE.

SIMILAR EVOLUTION OF CIGS AND THUNDER ON SUNDAY...WITH STRATUS
MAKING ANOTHER RETURN SUNDAY NIGHT INTO MONDAY MORNING. FRONTAL
BOUNDARY MAY PASS METRO TERMINALS LATE SUNDAY. HAVE NOT
INTRODUCED THIS IN TAFS...BUT PUBLIC GRIDDED FORECAST CURRENTLY
INDICATES THIS. WILL CONTINUE TO ASSESS FOR FUTURE TAF ISSUANCES.

25

&&

.PREV DISCUSSION... /ISSUED 330 PM CDT SAT APR 23 2011/
A COLD FRONT HAS MOVED INTO THE EXTREME NORTHWESTERN PART OF THE
FORECAST AREA THIS AFTERNOON. AS OF 20Z...THE FRONT EXTENDED
SOUTHEAST OF AN ADA OKLAHOMA...WICHITA FALLS...THROCKMORTON...
SWEETWATER LINE. LOCAL CONVECTIVE PARAMETERS INDICATE THAT THE
CONVECTIVE INHIBITION IS DECREASING AND SATELLITE SHOWS BUILDING
CUMULUS FIELDS. EXPECT THUNDERSTORM INITIATION ALONG THE FRONTAL
BOUNDARY BETWEEN 21Z AND 22Z. THE MEAN STORM MOTION SHOULD BE EAST
NORTHEAST AT 30 KNOTS. GIVEN THE SURFACE TEMPERATURES IN THE UPPER
80S TO LOWER 90S...DEW POINTS IN THE LOWER TO MID 60S...AND CAPES
3000-4000 J/KG...EXPECT THE POTENTIAL FOR VERY LARGE HAIL AND
DAMAGING DOWNBURST WINDS LATE THIS AFTERNOON INTO THE EVENING. THE
HIGH RESOLUTION RAPID REFRESH MODEL...NAM...AND WRF INDICATE THAT
THE FRONT WILL APPROACH THE METROPLEX BEFORE STALLING...WHEREAS
THE GFS KEEPS THE FRONT TO THE NORTHWEST. HAVE BROUGHT THE FRONT
TO NEAR THE METROPLEX TONIGHT...AND THEN LIFTED IT SLIGHTLY TO THE
NORTHWEST TOWARD DAYBREAK. EXPECT SCATTERED THUNDERSTORMS TO
CONTINUE OVERNIGHT ALONG AND NORTH OF THE FRONT.

THE FRONT SHOULD MOVE SOUTHEAST AGAIN SUNDAY MAYBE MOVING TO NEAR
A BONHAM...DALLAS... COMANCHE LINE BEFORE BECOMING QUASI-
STATIONARY ONCE AGAIN. THE FRONT WILL LIFT BACK NORTHWARD LATE
SUNDAY NIGHT. THERE WILL BE A CHANCE OF SHOWERS AND THUNDERSTORMS
ACROSS MOST OF THE FORECAST AREA SUNDAY AND SUNDAY NIGHT. THERE
WILL BE A POTENTIAL FOR SOME SEVERE THUNDERSTORMS AGAIN...WITH
LARGE HAIL AND DAMAGING WINDS POSSIBLE SUNDAY AFTERNOON/EVENING.

WE WILL CONTINUE TO HAVE A CHANCE OF SHOWERS AND THUNDERSTORMS
MONDAY THROUGH WEDNESDAY. AFTERWARD...EXPECT THE MEAN UPPER
TROUGH TO MOVE EAST...WITH DRY WEATHER FORECAST FOR THURSDAY
THROUGH NEXT SATURDAY.

58

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  70  84  70  86  66 /  50  40  40  30  30
WACO, TX              72  89  72  89  67 /  20  20  20  20  20
PARIS, TX             68  83  66  82  63 /  40  40  40  50  40
DENTON, TX            66  81  68  86  61 /  60  50  40  30  30
MCKINNEY, TX          68  83  70  83  63 /  50  40  40  30  40
DALLAS, TX            69  86  71  87  67 /  50  40  40  30  30
TERRELL, TX           71  84  69  84  67 /  30  30  30  30  40
CORSICANA, TX         72  88  70  88  68 /  20  20  20  30  30
TEMPLE, TX            71  87  71  87  67 /  20  20  20  20  20
MINERAL WELLS, TX     64  83  67  91  58 /  60  50  40  20  20

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

25

Hazardous weather outlook, Apr 23, 3:16 PM CDT, 4 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
316 PM CDT SAT APR 23 2011

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-241145-
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-
316 PM CDT SAT APR 23 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT NORTHWEST OF A LINE FROM
COMANCHE TO CLEBURNE TO SULPHUR SPRINGS.

THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT ACROSS THE
NORTHWESTERN TWO THIRDS OF NORTH TEXAS. SOME OF THE STORMS MAY
BECOME
SEVERE WITH LARGE HAIL AND DAMAGING DOWNBURST WINDS THE PRIMARY
HAZARDS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
THUNDERSTORM CHANCES WILL CONTINUE SUNDAY THROUGH WEDNESDAY
AFTERNOON.
THE THREAT OF SEVERE WEATHER WILL REMAIN.

THE DRY LINE MAY REACH THE I-35 CORRIDOR TUESDAY...RESULTING IN
STRONG GUSTY WINDS AND RELATIVE HUMIDITY AS LOW AS 20 PERCENT
ACROSS WESTERN PORTIONS OF NORTH TEXAS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON THROUGH THE
EVENING HOURS...PRIMARILY NORTH OF THE I-20 CORRIDOR.

In the hours before

Local storm report, Apr 23, 7:34 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
734 PM CDT SAT APR 23 2011

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

0733 PM     HAIL             GORDON                  32.55N  98.37W
04/23/2011  E1.75 INCH       PALO PINTO         TX   TRAINED SPOTTER

            GOLFBALL SIZE HAIL IN GORDON

Local storm report, Apr 23, 7:40 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
740 PM CDT SAT APR 23 2011

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

0739 PM     HAIL             NOCONA                  33.78N  97.73W
04/23/2011  E1.50 INCH       MONTAGUE           TX   AMATEUR RADIO

            HALF DOLLAR NOCONA HILLS

Local storm report, Apr 23, 7:41 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
741 PM CDT SAT APR 23 2011

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

0740 PM     HAIL             SIDNEY                  31.95N  98.73W
04/23/2011  E1.75 INCH       COMANCHE           TX   AMATEUR RADIO

Local storm report, Apr 23, 7:43 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
743 PM CDT SAT APR 23 2011

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

0740 PM     HAIL             NOCONA                  33.78N  97.73W
04/23/2011  E1.50 INCH       MONTAGUE           TX   TRAINED SPOTTER

            PING PONG BALL SIZE HAIL IN NOCONA

Local storm report, Apr 23, 7:44 PM CDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
744 PM CDT SAT APR 23 2011

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

0743 PM     HAIL             NOCONA                  33.78N  97.73W
04/23/2011  E1.50 INCH       MONTAGUE           TX   TRAINED SPOTTER

            GOLFBALL SIZE HAIL IN NOCONA

Local storm report, Apr 23, 7:50 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
750 PM CDT SAT APR 23 2011

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

0743 PM     HAIL             3 NE NOCONA             33.81N  97.69W
04/23/2011  E1.75 INCH       MONTAGUE           TX   TRAINED SPOTTER

            GOLFBALL SIZE HAIL IN NOCONA HILLS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 7:14 PM CDT	Areal Flood Advisory	FWD	Cooke, Grayson, Jack, Montague, Wise	117 min
Apr 23, 7:23 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Montague	53 min
Apr 23, 7:24 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Wise	66 min
Apr 23, 7:27 PM CDT	Areal Flood Advisory	FWD	Comanche, Eastland, Erath, Palo Pinto, Parker, Stephens	3 hr
Apr 23, 7:27 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Parker	78 min
Apr 23, 7:28 PM CDT	Tornado Warning	FWD	Cooke, Grayson	47 min
Apr 23, 7:29 PM CDT	Tornado Warning	FWD	Eastland, Erath, Palo Pinto	34 min
Apr 23, 7:37 PM CDT	Tornado Warning	FWD	Comanche, Eastland	38 min
Apr 23, 7:52 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Denton	53 min
Apr 23, 7:59 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Eastland, Erath	61 min
Apr 23, 8:23 PM CDT	Tornado Warning	FWD	Comanche	52 min
Apr 23, 8:32 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Denton	37 min
Apr 23, 8:59 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Erath	61 min
Apr 23, 9:08 PM CDT	Tornado Warning	FWD	Comanche, Erath	29 min
Apr 23, 9:28 PM CDT	Tornado Warning	FWD	Comanche	47 min
Apr 23, 9:34 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Grayson	56 min
Apr 23, 9:50 PM CDT	Special Weather Statement	FWD	Collin, Dallas, Denton, Tarrant	85 min
Apr 23, 9:55 PM CDT	Severe Thunderstorm Warning	FWD	Erath, Hood, Palo Pinto, Parker, Somervell	65 min
Apr 23, 10:13 PM CDT	Severe Thunderstorm Warning	FWD	Comanche	62 min
Apr 23, 10:34 PM CDT	Areal Flood Advisory	FWD	Comanche, Erath	3 hr
Apr 23, 10:42 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Tarrant	48 min
Apr 23, 11:19 PM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Denton	56 min
Apr 23, 11:36 PM CDT	Severe Thunderstorm Warning	FWD	Comanche, Erath	29 min
Apr 24, 1:09 AM CDT	Special Weather Statement	FWD	Dallas, Tarrant	51 min
Apr 24, 1:49 PM CDT	Fire Weather Watch	FWD	Comanche, Eastland, Erath, Hamilton, Jack, Mills and 3 more	15 hr
Apr 24, 3:17 PM CDT	Special Weather Statement	FWD	Eastland, Stephens	28 min
Apr 24, 3:56 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	64 min
Apr 24, 4:32 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	28 min
Apr 24, 4:47 PM CDT	Special Weather Statement	FWD	Palo Pinto	28 min
Apr 24, 4:56 PM CDT	Tornado Warning	FWD	Palo Pinto, Stephens	49 min
Apr 24, 5:18 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto	42 min
Apr 24, 5:56 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Stephens	64 min
Apr 24, 5:59 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Parker, Wise	61 min
Apr 24, 6:22 PM CDT	Tornado Warning	FWD	Eastland, Stephens	38 min
Apr 24, 6:33 PM CDT	Special Weather Statement	FWD	Denton, Tarrant	27 min
Apr 24, 6:37 PM CDT	Severe Thunderstorm Warning	FWD	Denton, Parker, Tarrant, Wise	38 min
Apr 24, 6:55 PM CDT	Tornado Warning	FWD	Eastland, Erath, Palo Pinto, Stephens	50 min
Apr 24, 6:59 PM CDT	Special Weather Statement	FWD	Cooke	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2011 Every severe thunderstorm warning in 2011

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.