Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 21, NWS Fort Worth, TX

March 17, 2020Stephens County, Young County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 17, 2020, 9:05 PM CDT for Stephens County, Young 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 outline as issued.

The facts

Issued
Mar 17, 2020, 9:05 PM CDT (02:05 UTC)
Expired
Mar 17, 2020, 10:00 PM CDT
In force
55 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon
Hail
1.0 in
Wind
65.0 mph

Counties Stephens County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 64 km from the middle of the area, began a volume at 02:09 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, 2.1 hours before the alert went out and 139 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-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2020-03-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 307 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2020-03-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 282 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
307 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
659 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
282 m²/s²
0-3 km storm-relative helicity
294 m²/s²
Significant tornado parameter
0.5
Supercell composite
7.1

Open this sounding in Storm Lab

The text

As transmitted.

273 
WUUS54 KFWD 180205
SVRFWD
TXC429-503-180300-
/O.NEW.KFWD.SV.W.0021.200318T0205Z-200318T0300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Fort Worth TX
905 PM CDT Tue Mar 17 2020

The National Weather Service in Fort Worth has issued a

* Severe Thunderstorm Warning for...
  Southern Young County in north central Texas...
  Stephens County in north central Texas...

* Until 1000 PM CDT.

* At 904 PM CDT, a severe thunderstorm was located 9 miles southeast
  of Fort Griffin, or 12 miles northwest of Breckenridge, moving east
  at 40 mph.

  HAZARD...65 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Graham, Breckenridge, Crystal Falls, Newcastle and Us-
  180 Near The Shackelford-Stephens County Line.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection get inside a sturdy structure and stay away from
windows.

&&

LAT...LON 3295 9910 3296 9895 3314 9895 3322 9859
      3300 9849 3295 9850 3295 9857 3294 9858
      3268 9858 3263 9910
TIME...MOT...LOC 0204Z 251DEG 34KT 3283 9910 

HAIL...1.00IN
WIND...65MPH
$$

Barnes
3 follow-up statements
975 
WWUS54 KFWD 180210
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
910 PM CDT Tue Mar 17 2020

TXC429-503-180300-
/O.CON.KFWD.SV.W.0021.000000T0000Z-200318T0300Z/
Young TX-Stephens TX-
910 PM CDT Tue Mar 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR SOUTHERN YOUNG AND STEPHENS COUNTIES...

At 910 PM CDT, a severe thunderstorm was located 9 miles west of
Crystal Falls, or 9 miles northwest of Breckenridge, moving east at
40 mph.

HAZARD...65 mph wind gusts and quarter size hail.

SOURCE...Public reported quarter size hail near Albany, TX, just 
         before 9 PM.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Graham, Breckenridge, Crystal Falls, Newcastle and Us-
180 Near The Shackelford-Stephens County Line.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection stay inside a sturdy structure and keep away from
windows.

&&

LAT...LON 3295 9910 3296 9895 3314 9895 3322 9859
      3300 9849 3295 9850 3295 9857 3294 9858
      3268 9858 3263 9910
TIME...MOT...LOC 0210Z 251DEG 34KT 3285 9903 

HAIL...1.00IN
WIND...65MPH
 
$$

Barnes
367 
WWUS54 KFWD 180249
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
949 PM CDT Tue Mar 17 2020

TXC429-503-180300-
/O.CON.KFWD.SV.W.0021.000000T0000Z-200318T0300Z/
Young TX-Stephens TX-
949 PM CDT Tue Mar 17 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR SOUTHERN YOUNG AND CENTRAL STEPHENS COUNTIES...

At 949 PM CDT, a severe thunderstorm was located 7 miles northwest of
Possum Kingdom State Park, or 9 miles south of Graham, moving east at
40 mph.

HAZARD...60 mph wind gusts and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Graham, Breckenridge, Crystal Falls and Newcastle. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection stay inside a sturdy structure and keep away from
windows.

&&

LAT...LON 3293 9888 3316 9884 3322 9859 3300 9849
      3295 9850 3295 9857 3294 9858 3268 9858
      3263 9910 3272 9909
TIME...MOT...LOC 0249Z 251DEG 34KT 3297 9861 

HAIL...0.88IN
WIND...60MPH
 
$$

Barnes
871 
WWUS54 KFWD 180259
SVSFWD

Severe Weather Statement
National Weather Service Fort Worth TX
959 PM CDT Tue Mar 17 2020

TXC429-503-180309-
/O.EXP.KFWD.SV.W.0021.000000T0000Z-200318T0300Z/
Young TX-Stephens TX-
959 PM CDT Tue Mar 17 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN YOUNG AND CENTRAL
STEPHENS COUNTIES WILL EXPIRE AT 1000 PM CDT...
                
The storm which prompted the warning has weakened below severe
limits. Therefore the warning will be allowed to expire. However
small hail and gusty winds are still possible with this thunderstorm.

LAT...LON 3293 9888 3316 9884 3322 9859 3300 9849
      3295 9850 3295 9857 3294 9858 3268 9858
      3263 9910 3272 9909
TIME...MOT...LOC 0259Z 251DEG 34KT 3300 9851 

$$

Barnes

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 17, 7:51 PM CDTSpecial Weather StatementFWDYoung39 min
Mar 17, 9:26 PM CDTRiver Flood WarningFWDDallas37 hr
Mar 17, 9:26 PM CDTRiver Flood WarningFWDHenderson, Navarro21 days
Mar 17, 10:46 PM CDTSevere Thunderstorm WarningFWDJack, Palo Pinto, Parker59 min
Mar 17, 11:27 PM CDTSpecial Weather StatementFWDWise33 min
Mar 17, 11:44 PM CDTAreal Flood AdvisoryFWDPalo Pinto5 hr
Mar 18, 12:12 AM CDTSpecial Weather StatementFWDWise33 min
Mar 18, 12:36 AM CDTAreal Flood AdvisoryFWDStephens4 hr
Mar 18, 12:58 AM CDTSpecial Weather StatementFWDDenton32 min
Mar 18, 1:14 AM CDTAreal Flood AdvisoryFWDDenton, Parker, Tarrant, Wise3 hr
Mar 18, 1:33 AM CDTSpecial Weather StatementFWDStephens27 min
Mar 18, 1:38 AM CDTSpecial Weather StatementFWDGrayson37 min
Mar 18, 2:13 AM CDTSpecial Weather StatementFWDPalo Pinto32 min
Mar 18, 2:17 AM CDTSpecial Weather StatementFWDFannin43 min
Mar 18, 2:24 AM CDTFlash Flood WarningFWDPalo Pinto3 hr
Mar 18, 2:46 AM CDTSpecial Weather StatementFWDHood, Parker44 min
Mar 18, 2:50 AM CDTAreal Flood AdvisoryFWDJack, Wise3 hr
Mar 18, 3:03 AM CDTAreal Flood AdvisoryFWDParker3 hr
Mar 18, 3:11 AM CDTAreal Flood AdvisoryFWDCollin, Denton3 hr
Mar 18, 3:50 AM CDTFlash Flood WarningFWDDenton3 hr
Mar 18, 4:01 AM CDTAreal Flood AdvisoryFWDTarrant3 hr
Mar 18, 4:13 AM CDTRiver Flood WarningFWDWise9 days
Mar 18, 4:20 AM CDTFlash Flood WarningFWDHood, Johnson, Parker, Tarrant3 hr
Mar 18, 4:38 AM CDTFlash Flood WarningFWDCollin2 hr
Mar 18, 4:51 AM CDTAreal Flood AdvisoryFWDDallas3 hr
Mar 18, 4:52 AM CDTSpecial Weather StatementFWDEllis, Johnson38 min
Mar 18, 4:53 AM CDTAreal Flood WarningFWDPalo Pinto3 hr
Mar 18, 5:04 AM CDTRiver Flood WarningFWDPalo Pinto32 hr
Mar 18, 5:07 AM CDTRiver Flood WarningFWDCollin64 hr
Mar 18, 5:07 AM CDTRiver Flood WarningFWDCollin39 hr
Mar 18, 5:09 AM CDTAreal Flood AdvisoryFWDHunt3 hr
Mar 18, 5:28 AM CDTFlash Flood WarningFWDDallas3 hr
Mar 18, 5:37 AM CDTRiver Flood WarningFWDDallas6 hr
Mar 18, 5:56 AM CDTAreal Flood AdvisoryFWDEllis, Johnson3 hr
Mar 18, 6:08 AM CDTSpecial Weather StatementFWDKaufman37 min
Mar 18, 6:41 AM CDTAreal Flood WarningFWDCollin, Denton3 hr
Mar 18, 7:21 AM CDTAreal Flood WarningFWDHood, Johnson, Parker, Tarrant3 hr
Mar 18, 7:46 AM CDTAreal Flood AdvisoryFWDCollin, Fannin, Grayson3 hr
Mar 18, 8:19 AM CDTAreal Flood WarningFWDCollin, Dallas, Rockwall3 hr
Mar 18, 8:40 AM CDTAreal Flood AdvisoryFWDCooke, Montague2 hr
Mar 18, 8:48 AM CDTAreal Flood AdvisoryFWDDelta, Hopkins, Lamar, Rains, Van Zandt117 min
Mar 18, 9:15 AM CDTRiver Flood WarningFWDWise49 hr
Mar 18, 9:15 AM CDTRiver Flood WarningFWDDallas39 hr
Mar 18, 9:23 AM CDTFlash Flood WarningFWDCooke, Grayson97 min
Mar 18, 9:56 AM CDTRiver Flood WarningFWDEllis, Kaufman4 days
Mar 18, 10:06 AM CDTRiver Flood WarningFWDDelta, Lamar4 hr
Mar 18, 5:58 PM CDTSevere Thunderstorm WarningFWDEastland62 min
Mar 18, 6:59 PM CDTSevere Thunderstorm WarningFWDEastland, Stephens18 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020Every severe thunderstorm warning in 2020

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.