Alert archive / Texas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 185, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Aug 18, 2018, 7:50 PM CDT for Collin County, Texas. It was in force for 55 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 18, 2018, 7:50 PM CDT (00:50 UTC)
- Expired
- Aug 18, 2018, 8:45 PM CDT
- In force
- 55 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Collin County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 97 km from the middle of the area, began a volume at 00:52 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
Norman, OK (KOUN), launched 00:00Z, 0.8 hours before the alert went out and 238 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
- 457 J/kg
- Mixed-layer CIN
- -188 J/kg
- Mixed-layer LCL
- 1363 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 19 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 18, 6:49 PM CDT, 1 hour 1 minute earlier.
Area forecast discussion, Aug 18, 6:49 PM CDT, 1 hour 1 minute before
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</html>Hazardous weather outlook, Aug 18, 3:40 PM CDT, 4 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Fort Worth TX 340 PM CDT Sat Aug 18 2018 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-191215- 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- 340 PM CDT Sat Aug 18 2018 This Hazardous Weather Outlook is for North and Central Texas. .DAY ONE...Tonight. Scattered thunderstorms will continue through the early evening hours north of I-20 and west of I-35. These storms will be capable of producing strong downburst winds, frequent lightning, and locally heavy rainfall. Late tonight, thunderstorms may impact areas north of the I- 20 corridor. Lightning would be the primary hazard with this activity. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Thunderstorms may redevelop along or north of the I-20 corridor Sunday afternoon. Any storms that develop would be capable of producing strong downburst winds and frequent lightning. More widespread thunderstorm chances will accompany a cold front Sunday night into Monday. Strong storms will be possible across portions of Central and East Texas Monday afternoon and evening. Storm chances will linger Monday night into Tuesday morning as the front exits the area. .SPOTTER INFORMATION STATEMENT... Limited spotter activation may be requested this evening north of I-20 and west of I-35. Dunn
In the hours before
Special weather statement, Aug 18, 5:22 PM CDT, 2 hours 28 minutes before
Special Weather Statement National Weather Service Fort Worth TX 522 PM CDT SAT AUG 18 2018 TXZ116-117-182245- Palo Pinto TX-Parker TX- 522 PM CDT SAT AUG 18 2018 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PARKER AND EAST CENTRAL PALO PINTO COUNTIES UNTIL 545 PM CDT... At 522 PM CDT, Doppler radar was tracking a strong thunderstorm just south of Mineral Wells. This storm was nearly stationary. Dime size hail and winds in excess of 45 mph have been reported with this storm. Locations impacted include... Mineral Wells, Cool, Mineral Wells State Park and Millsap. LAT...LON 3265 9817 3284 9818 3290 9796 3263 9794 TIME...MOT...LOC 2222Z 267DEG 3KT 3276 9810 92
Special weather statement, Aug 18, 5:32 PM CDT, 2 hours 18 minutes before
Special Weather Statement National Weather Service Fort Worth TX 532 PM CDT SAT AUG 18 2018 TXZ101-182300- Jack TX- 532 PM CDT SAT AUG 18 2018 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN JACK COUNTY UNTIL 600 PM CDT... At 532 PM CDT, Doppler radar was tracking a strong thunderstorm near Bryson, or 12 miles northeast of Graham, moving east at 5 mph. Nickel size hail and wind gusts of 50 to 55 mph will be possible with this storm. Locations impacted include... Bryson. PRECAUTIONARY/PREPAREDNESS ACTIONS... Torrential rainfall is also occurring with this storm, and may lead to localized flooding. Do not drive your vehicle through flooded roadways. Frequent cloud to ground lightning is occurring with this storm. Seek a safe shelter inside a building or vehicle. && LAT...LON 3312 9842 3346 9842 3346 9823 3315 9825 TIME...MOT...LOC 2232Z 266DEG 6KT 3322 9841 92
Special weather statement, Aug 18, 6:01 PM CDT, 1 hour 49 minutes before
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</html>Special weather statement, Aug 18, 6:21 PM CDT, 1 hour 29 minutes before
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</html>Local storm report, Aug 18, 6:37 PM CDT, 1 hour 13 minutes before
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</html>The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:18 PM CDT | Areal Flood Advisory | FWD | Collin, Dallas, Denton | 57 min |
| Aug 18, 7:25 PM CDT | Special Weather Statement | FWD | Tarrant | 35 min |
| Aug 18, 7:41 PM CDT | River Flood Warning | FWD | Dallas | 15 hr |
| Aug 18, 7:45 PM CDT | Special Weather Statement | FWD | Collin | 30 min |
| Aug 18, 8:00 PM CDT | Special Weather Statement | FWD | Young | 30 min |
| Aug 18, 8:14 PM CDT | Areal Flood Advisory | FWD | Collin, Dallas, Denton | 61 min |
| Aug 18, 8:16 PM CDT | Special Weather Statement | FWD | Grayson | 29 min |
| Aug 18, 8:32 PM CDT | Special Weather Statement | FWD | Hunt | 28 min |
| Aug 18, 8:59 PM CDT | Areal Flood Advisory | FWD | Hunt | 2 hr |
| Aug 19, 4:30 PM CDT | Special Weather Statement | FWD | Lamar | 30 min |
| Aug 19, 5:53 PM CDT | Special Weather Statement | FWD | Coryell | 37 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2018Every severe thunderstorm warning in 2018
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.