Alert archive / Texas / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 230, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Aug 17, 2014, 6:25 AM CDT for Collin County, Texas. It was in force for 36 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
- Aug 17, 2014, 6:25 AM CDT (11:25 UTC)
- Expired
- Aug 17, 2014, 7:01 AM CDT
- In force
- 36 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
County Collin County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 97 km from the middle of the area, began a volume at 11:29 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, 11.4 hours before the alert went out and 78 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
- 349 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1921 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 114 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 17, 3:46 AM CDT, 2 hours 39 minutes earlier.
Area forecast discussion, Aug 17, 3:46 AM CDT, 2 hours 39 minutes before
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</html>Hazardous weather outlook, Aug 17, 3:39 AM CDT, 2 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 339 AM CDT SUN AUG 17 2014 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-181200- 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- 339 AM CDT SUN AUG 17 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...TODAY AND TONIGHT. THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE REGION TODAY THROUGH TONIGHT. THE BEST RAIN CHANCES WILL BE SOUTHEAST OF A LINE FROM EASTLAND TO FORT WORTH TO BONHAM. LIGHTNING...PERIODS OF HEAVY RAINFALL AND STRONG WINDS WILL BE THE MAIN HAZARDS BUT SOME THUNDERSTORMS IN THE AFTERNOON AND EARLY EVENING HOURS WILL BE CAPABLE OF PRODUCING DAMAGING DOWNBURST WINDS. IN ADDITION...STRONG OUTFLOW WINDS WILL POSE A THREAT TO THOSE INVOLVED IN OUTDOOR RECREATION ACTIVITIES...ESPECIALLY ON AREA LAKES. AREAS THAT RECEIVE HEAVY RAINFALL COULD EXPERIENCE LOCALIZED FLOODING PROBLEMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. LOW THUNDERSTORM CHANCES WILL CONTINUE ALONG AND SOUTH OF INTERSTATE 20 ON MONDAY. ISOLATED THUNDERSTORMS ARE POSSIBLE TUESDAY AFTERNOON. ISOLATED SEVERE DOWNBURST WINDS...PERIODS OF HEAVY RAINFALL AND FREQUENT LIGHTNING WILL REMAIN THE PRIMARY HAZARDS...ESPECIALLY DURING THE AFTERNOON AND EVENING PERIODS. .SPOTTER INFORMATION STATEMENT... LIMITED SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON THROUGH THE EARLY EVENING HOURS. 82/JLD
In the hours before
Special weather statement, Aug 17, 5:53 AM CDT, 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FORT WORTH TX 553 AM CDT SUN AUG 17 2014 TXZ104-171130- COLLIN TX- 553 AM CDT SUN AUG 17 2014 ...SIGNIFICANT WEATHER ADVISORY FOR... SOUTH CENTRAL COLLIN COUNTY AT 553 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A STRONG THUNDERSTORM 4 MILES WEST OF WYLIE...MOVING NORTHEAST AT 5 MPH. CITIES IN THE PATH OF THIS STORM INCLUDE LUCAS...MURPHY...PARKER AND WYLIE. VERY HEAVY RAIN AND WIND GUSTS TO 40 MPH ARE LIKELY WITH THIS STORM. THE HEAVY RAIN MAY RESULT IN THE FLOODING OF LOW LYING AREAS...CREEKS...AND DITCHES. LAT...LON 3318 9657 3302 9638 3298 9658 3305 9667 TIME...MOT...LOC 1053Z 232DEG 4KT 3305 9658 82/JLD
Special weather statement, Aug 17, 6:09 AM CDT, 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
609 AM CDT SUN AUG 17 2014
TXZ104-171145-
COLLIN TX-
609 AM CDT SUN AUG 17 2014
...SIGNIFICANT WEATHER ADVISORY FOR...
NORTHWESTERN COLLIN COUNTY
AT 609 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF MCKINNEY...MOVING NORTHEAST
AT 15 MPH.
CITIES IN THE PATH OF THIS STORM INCLUDE ALLEN...ANNA...CELINA...
FAIRVIEW...LOWRY CROSSING...MCKINNEY AND PROSPER.
VERY HEAVY RAIN AND WIND GUSTS TO 40 MPH ARE LIKELY WITH THIS STORM.
HEAVY RAINFALL MAY RESULT IN FLOODING OF LOW LYING AREAS SUCH AS
DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS AS THEY MAY BE WASHED OUT.
LAT...LON 3340 9653 3339 9652 3320 9648 3308 9672
3323 9681 3341 9683 3340 9656
TIME...MOT...LOC 1109Z 238DEG 15KT 3326 9672
82/JLDThe office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 7:15 PM CDT | Areal Flood Advisory | FWD | Delta, Hopkins, Lamar | 2 hr |
| Aug 17, 5:08 AM CDT | Areal Flood Advisory | FWD | Denton, Wise | 97 min |
| Aug 17, 5:53 AM CDT | Special Weather Statement | FWD | Collin | 37 min |
| Aug 17, 6:09 AM CDT | Special Weather Statement | FWD | Collin | 36 min |
| Aug 17, 6:50 AM CDT | Areal Flood Advisory | FWD | Collin | 55 min |
| Aug 17, 6:57 AM CDT | Flash Flood Warning | FWD | Collin | 2 hr |
| Aug 17, 7:16 AM CDT | Special Weather Statement | FWD | Dallas | 59 min |
| Aug 17, 8:54 AM CDT | Areal Flood Advisory | FWD | Denton | 2 hr |
| Aug 17, 9:01 AM CDT | Areal Flood Advisory | FWD | Dallas | 3 hr |
| Aug 17, 9:13 AM CDT | Flash Flood Warning | FWD | Dallas, Denton | 2 hr |
| Aug 17, 9:30 AM CDT | Flash Flood Warning | FWD | Ellis | 2 hr |
| Aug 17, 10:23 AM CDT | Areal Flood Advisory | FWD | Johnson, Tarrant | 82 min |
| Aug 17, 2:18 PM CDT | Severe Thunderstorm Warning | FWD | McLennan | 57 min |
| Aug 17, 2:52 PM CDT | Areal Flood Advisory | FWD | McLennan | 83 min |
| Aug 17, 4:51 PM CDT | Areal Flood Advisory | FWD | Bell, Coryell, Lampasas | 114 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2014Every severe thunderstorm warning in 2014
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.