Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 151, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at May 10, 2021, 11:00 AM CDT for Fannin County, Grayson County, Texas. It was in force for 60 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 10, 2021, 11:00 AM CDT (16:00 UTC)
- Expired
- May 10, 2021, 12:00 PM CDT
- In force
- 60 min
- Issued by
- NWS Fort Worth, TX
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Fannin County, TX, Grayson County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 150 km from the middle of the area, began a volume at 16:02 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 10, 11:16 AM CDT | HAIL 1.5 | 1 Wsw Bells, TX | MPING REPORT OF PING PONG BALL SIZE HAIL IN BELL. |
| May 10, 11:20 AM CDT | HAIL 1.25 | 1 Wsw Bells, TX | MPING REPORT OF HALF DOLLAR SIZE HAIL NEAR BELLS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 4.0 hours before the alert went out and 128 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 675 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 299 m²/s²
- 0-3 km storm-relative helicity
- 381 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted.
748 WUUS54 KFWD 101600 SVRFWD TXC147-181-101700- /O.NEW.KFWD.SV.W.0151.210510T1600Z-210510T1700Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Fort Worth TX 1100 AM CDT Mon May 10 2021 The National Weather Service in Fort Worth has issued a * Severe Thunderstorm Warning for... East central Grayson County in north central Texas... West central Fannin County in north central Texas... * Until noon CDT. * At 1059 AM CDT, a severe thunderstorm was located over Knollwood, or near Sherman, moving east at 35 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is possible. * Locations impacted include... Sherman, Bonham, Pottsboro, Bells, Savoy, Ector, Dodd City, Knollwood, Ravenna, Bonham State Park, Southmayd and Windom. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection get inside a sturdy structure and stay away from windows. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning can kill. && LAT...LON 3361 9599 3347 9600 3364 9677 3377 9673 TIME...MOT...LOC 1559Z 278DEG 30KT 3369 9663 HAIL...1.00IN WIND...<50MPH $$ 05
4 follow-up statements
794 WWUS54 KFWD 101617 SVSFWD Severe Weather Statement National Weather Service Fort Worth TX 1117 AM CDT Mon May 10 2021 TXC147-181-101700- /O.CON.KFWD.SV.W.0151.000000T0000Z-210510T1700Z/ Grayson TX-Fannin TX- 1117 AM CDT Mon May 10 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR EAST CENTRAL GRAYSON AND WEST CENTRAL FANNIN COUNTIES... At 1117 AM CDT, a severe thunderstorm was located over Bells, or 12 miles east of Sherman, moving east at 45 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is possible. Locations impacted include... Sherman, Bonham, Bells, Savoy, Ector, Dodd City, Ravenna, Bonham State Park and Windom. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm is producing large hail. SEEK SHELTER NOW inside a sturdy structure and stay away from windows. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. && LAT...LON 3361 9599 3347 9600 3360 9660 3373 9656 TIME...MOT...LOC 1617Z 281DEG 39KT 3363 9640 HAIL...1.00IN WIND...<50MPH $$ 05
524
WWUS54 KFWD 101629
SVSFWD
Severe Weather Statement
National Weather Service Fort Worth TX
1129 AM CDT Mon May 10 2021
TXC181-101639-
/O.CAN.KFWD.SV.W.0151.000000T0000Z-210510T1700Z/
Grayson TX-
1129 AM CDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL GRAYSON COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. **! Therefore, the warning has been cancelled.
LAT...LON 3361 9599 3347 9600 3355 9638 3369 9638
TIME...MOT...LOC 1629Z 278DEG 30KT 3362 9628
$$
TXC147-101700-
/O.CON.KFWD.SV.W.0151.000000T0000Z-210510T1700Z/
Fannin TX-
1129 AM CDT Mon May 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR
WEST CENTRAL FANNIN COUNTY...
At 1129 AM CDT, a severe thunderstorm was located over Ector, or near
Bonham, moving east at 35 mph.
HAZARD...Half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is possible.
Locations impacted include...
Bonham, Savoy, Ector, Dodd City, Ravenna, Bonham State Park and
Windom.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection stay inside a sturdy structure and keep away from
windows.
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately.
&&
LAT...LON 3361 9599 3347 9600 3355 9638 3369 9638
TIME...MOT...LOC 1629Z 278DEG 30KT 3362 9628
HAIL...1.25IN
WIND...<50MPH
$$
05294 WWUS54 KFWD 101644 SVSFWD Severe Weather Statement National Weather Service Fort Worth TX 1144 AM CDT Mon May 10 2021 TXC147-101700- /O.CON.KFWD.SV.W.0151.000000T0000Z-210510T1700Z/ Fannin TX- 1144 AM CDT Mon May 10 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL NOON CDT FOR CENTRAL FANNIN COUNTY... At 1144 AM CDT, a severe thunderstorm was located over Dodd City, or 7 miles east of Bonham, moving east at 15 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is possible. Locations impacted include... Bonham, Dodd City, Bonham State Park and Windom. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection stay inside a sturdy structure and keep away from windows. This storm is producing large hail. SEEK SHELTER NOW inside a sturdy structure and stay away from windows. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. && LAT...LON 3361 9599 3347 9600 3352 9623 3365 9619 TIME...MOT...LOC 1644Z 285DEG 15KT 3355 9607 HAIL...1.00IN WIND...<50MPH $$ 05
910
WWUS54 KFWD 101652
SVSFWD
Severe Weather Statement
National Weather Service Fort Worth TX
1152 AM CDT Mon May 10 2021
TXC147-101702-
/O.EXP.KFWD.SV.W.0151.000000T0000Z-210510T1700Z/
Fannin TX-
1152 AM CDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL FANNIN COUNTY WILL
EXPIRE AT NOON CDT...
The storm which prompted the warning has weakened below severe
limits. Therefore the warning will be allowed to expire. However
small hail is still possible with this thunderstorm.
LAT...LON 3361 9599 3347 9600 3352 9623 3365 9619
TIME...MOT...LOC 1652Z 278DEG 30KT 3354 9601
$$
05The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 7:40 PM CDT | Severe Thunderstorm Warning | FWD | Mills | 65 min |
| May 9, 8:45 PM CDT | Special Weather Statement | FWD | Comanche | 45 min |
| May 10, 9:08 AM CDT | Special Weather Statement | FWD | Cooke | 37 min |
| May 10, 9:18 AM CDT | Severe Thunderstorm Warning | FWD | Cooke, Grayson | 57 min |
| May 10, 10:08 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Fannin, Grayson, Hunt | 52 min |
| May 10, 10:45 AM CDT | Severe Thunderstorm Warning | FWD | Fannin, Grayson | 60 min |
| May 10, 11:03 AM CDT | Special Weather Statement | FWD | Fannin | 42 min |
| May 10, 11:14 AM CDT | Severe Thunderstorm Warning | FWD | Delta, Hopkins, Hunt | 46 min |
| May 10, 11:57 AM CDT | Severe Thunderstorm Warning | FWD | Hopkins | 63 min |
| May 10, 12:05 PM CDT | Special Weather Statement | FWD | Delta | 40 min |
| May 10, 12:18 PM CDT | Severe Thunderstorm Warning | FWD | Delta | 27 min |
| May 10, 3:51 PM CDT | Special Weather Statement | FWD | Fannin | 54 min |
| May 10, 5:16 PM CDT | Special Weather Statement | FWD | Erath | 44 min |
| May 10, 5:23 PM CDT | Special Weather Statement | FWD | Hood, Parker | 37 min |
| May 10, 5:26 PM CDT | Severe Thunderstorm Warning | FWD | Erath | 34 min |
| May 10, 5:34 PM CDT | Severe Thunderstorm Warning | FWD | Parker | 38 min |
| May 10, 6:03 PM CDT | Severe Thunderstorm Warning | FWD | Denton, Wise | 27 min |
| May 10, 6:10 PM CDT | Special Weather Statement | FWD | Denton, Johnson, Tarrant | 50 min |
| May 10, 6:21 PM CDT | Severe Thunderstorm Warning | FWD | Tarrant | 24 min |
| May 10, 6:24 PM CDT | Severe Thunderstorm Warning | FWD | Denton | 50 min |
| May 10, 6:32 PM CDT | Special Weather Statement | FWD | Dallas | 28 min |
| May 10, 6:35 PM CDT | Severe Thunderstorm Warning | FWD | Ellis, Johnson | 27 min |
| May 10, 6:37 PM CDT | Severe Thunderstorm Warning | FWD | Collin | 53 min |
| May 10, 6:45 PM CDT | Severe Thunderstorm Warning | FWD | Grayson | 43 min |
| May 10, 6:49 PM CDT | Special Weather Statement | FWD | Tarrant | 26 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.