Alert archive / Texas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 525, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Sep 29, 2011, 11:44 PM CDT for Hamilton County, Texas. It was in force for 37 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
- Sep 29, 2011, 11:44 PM CDT (04:44 UTC)
- Expired
- Sep 30, 2011, 12:21 AM CDT
- In force
- 37 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
County Hamilton County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 123 km from the middle of the area, began a volume at 04:44 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 nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 4.7 hours before the alert went out and 147 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.
- Mixed-layer CAPE
- 1124 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 2883 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
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 Sep 29, 11:11 PM CDT, 33 minutes earlier.
Area forecast discussion, Sep 29, 11:11 PM CDT, 33 minutes before
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</html>Hazardous weather outlook, Sep 29, 3:37 PM CDT, 8 hours 7 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 337 PM CDT THU SEP 29 2011 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-301115- 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- 337 PM CDT THU SEP 29 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...THROUGH TONIGHT. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH TEXAS THROUGH TONIGHT. CLOUD TO GROUND LIGHTNING AND GUSTY WINDS WILL BE THE PRIMARY HAZARDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. GUSTY NORTHEASTERLY WINDS...LOW RELATIVE HUMIDITIES AND DRY GRASSES AND BRUSH WILL COMBINE TO CREATE FIRE WEATHER PROBLEMS FRIDAY. CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED FROM MID FRIDAY MORNING TO MID FRIDAY AFTERNOON ALONG AND SOUTH OF A COMANCHE TO ATHENS LINE. ELEVATED FIRE WEATHER CONDITIONS ARE EXPECTED FRIDAY ACROSS THE REST OF NORTH TEXAS. .SPOTTER INFORMATION STATEMENT... LIMITED SPOTTER ACTIVATION MAY BE REQUESTED THROUGH THE EARLY EVENING HOURS.
In the hours before
Local storm report, Sep 29, 10:28 PM CDT, 1 hour 16 minutes before
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</html>Special weather statement, Sep 29, 10:34 PM CDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1034 PM CDT THU SEP 29 2011
TXZ131-132-300400-
HOOD TX-SOMERVELL TX-
1034 PM CDT THU SEP 29 2011
...SIGNIFICANT WEATHER ADVISORY FOR...
HOOD COUNTY
SOMERVELL COUNTY
AT 1034 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 12 MILES SOUTHWEST OF GRANBURY...MOVING SOUTH AT
25 MPH.
CITIES IN THE PATH OF THIS STORM INCLUDE GLEN ROSE...GRANBURY AND
DINOSAUR VALLEY STATE PARK.
FREQUENT CLOUD TO GROUND LIGHTNING...VERY HEAVY RAINFALL...PEA-SIZED
HAIL...AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS STORM.
IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.
LAT...LON 3251 9806 3247 9762 3220 9761 3220 9765
3209 9786 3223 9795 3248 9806
TIME...MOT...LOC 0334Z 351DEG 23KT 3229 9793
CAVANAUGHLocal storm report, Sep 29, 10:40 PM CDT, 1 hour 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1040 PM CDT THU SEP 29 2011
..TIME.. ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE.. ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0912 PM TSTM WND DMG RIVER OAKS 32.78N 97.40W
09/29/2011 TARRANT TX PUBLIC
MULTIPLE TREES DOWN ON HOMES ON ROBERTS CUT OFF RDSpecial weather statement, Sep 29, 10:41 PM CDT, 1 hour 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1041 PM CDT THU SEP 29 2011
TXZ141-142-300415-
MILLS TX-COMANCHE TX-
1041 PM CDT THU SEP 29 2011
...SIGNIFICANT WEATHER ADVISORY FOR...
SOUTH CENTRAL COMANCHE COUNTY
MILLS COUNTY
AT 1041 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 17 MILES SOUTH OF COMANCHE...MOVING SOUTH AT 25
MPH.
CITIES IN THE PATH OF THIS STORM INCLUDE GOLDTHWAITE AND MULLIN.
FREQUENT CLOUD TO GROUND LIGHTNING...VERY HEAVY RAINFALL...PEA-SIZED
HAIL...AND WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS STORM.
IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.
LAT...LON 3161 9879 3169 9875 3171 9868 3180 9873
3185 9846 3175 9834 3168 9847 3141 9828
3124 9856 3128 9862 3131 9861 3132 9866
3136 9866 3136 9871 3140 9870 3141 9873
3138 9875 3149 9895
TIME...MOT...LOC 0341Z 353DEG 22KT 3165 9860
CAVANAUGHSpecial weather statement, Sep 29, 11:27 PM CDT, 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1127 PM CDT THU SEP 29 2011
TXZ143-144-157-159-300530-
HAMILTON TX-MCLENNAN TX-BOSQUE TX-CORYELL TX-
1127 PM CDT THU SEP 29 2011
...SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHERN BOSQUE COUNTY
CORYELL COUNTY
EASTERN HAMILTON COUNTY
MCLENNAN COUNTY
AT 1127 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 19 MILES NORTH OF
HAMILTON TO 6 MILES SOUTHEAST OF CLIFTON TO 13 MILES NORTH OF
LACY-LAKEVIEW...MOVING SOUTH AT 25 MPH. THESE STORMS ARE CAPABLE OF
PRODUCING 40 TO 50 MPH WIND GUSTS AND FREQUENT CLOUD TO GROUND
LIGHTNING.
CITIES IN THE PATH OF THESE STORMS INCLUDE BELLMEAD...BEVERLY
HILLS...BRUCEVILLE-EDDY...CLIFTON...CRANFILLS GAP...CRAWFORD...FORT
GATES...GATESVILLE...HAMILTON...HEWITT...HICO...IREDELL...
LACY-LAKEVIEW...LORENA...MCGREGOR...MOODY...NORTHCREST...ROBINSON...
VALLEY MILLS...WACO...WEST...WOODWAY...MERIDIAN STATE PARK AND MOTHER
NEFF STATE PARK.
LAT...LON 3196 9813 3203 9798 3182 9747 3184 9728
3178 9732 3175 9728 3186 9704 3176 9697
3140 9704 3128 9726 3127 9737 3132 9742
3123 9760 3150 9822
TIME...MOT...LOC 0427Z 009DEG 23KT 3196 9803 3173 9749
3180 9706
CAVANAUGHThe office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 29, 8:22 PM CDT | Special Weather Statement | FWD | Collin, Denton | 38 min |
| Sep 29, 8:34 PM CDT | Severe Thunderstorm Warning | FWD | Denton | 41 min |
| Sep 29, 8:52 PM CDT | Severe Thunderstorm Warning | FWD | Tarrant | 53 min |
| Sep 29, 9:12 PM CDT | Severe Thunderstorm Warning | FWD | Dallas | 63 min |
| Sep 29, 9:22 PM CDT | Special Weather Statement | FWD | Parker | 38 min |
| Sep 29, 9:39 PM CDT | Severe Thunderstorm Warning | FWD | Dallas, Ellis, Johnson, Tarrant | 66 min |
| Sep 29, 10:14 PM CDT | Special Weather Statement | FWD | Comanche, Mills | 31 min |
| Sep 29, 10:31 PM CDT | Special Weather Statement | FWD | Ellis, Hill, Navarro | 59 min |
| Sep 29, 10:34 PM CDT | Special Weather Statement | FWD | Hood, Somervell | 26 min |
| Sep 29, 10:41 PM CDT | Special Weather Statement | FWD | Mills | 34 min |
| Sep 29, 11:27 PM CDT | Special Weather Statement | FWD | Coryell, Hamilton, McLennan | 63 min |
| Sep 30, 12:25 AM CDT | Special Weather Statement | FWD | Coryell | 35 min |
| Sep 30, 12:42 AM CDT | Special Weather Statement | FWD | Bell | 63 min |
| Sep 30, 2:56 AM CDT | Red Flag Warning | FWD | Anderson, Bell, Coryell, Falls, Freestone, Henderson and 7 more | 16 hr |
Nearby
Severe Thunderstorm Warnings in Texas, 2011Every 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.