Alert archive / Texas / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 271, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 2, 2021, 5:59 AM CDT for Foard County, Knox County, Texas. It was in force for 46 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
- Jun 2, 2021, 5:59 AM CDT (10:59 UTC)
- Expired
- Jun 2, 2021, 6:45 AM CDT
- In force
- 46 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Foard County, TX, Knox County, TX
The radar
The Altus AFB radar (KFDR), 108 km from the middle of the area, began a volume at 10:58 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 11.0 hours before the alert went out and 231 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
- 10 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1359 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
The text
As transmitted.
870
WUUS54 KOUN 021059
SVROUN
TXC155-275-021145-
/O.NEW.KOUN.SV.W.0271.210602T1059Z-210602T1145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
559 AM CDT Wed Jun 2 2021
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Southwestern Foard County in northern Texas...
Knox County in northern Texas...
* Until 645 AM CDT.
* At 558 AM CDT, severe thunderstorms were located along a line
extending from 9 miles northeast of Chalk to 15 miles southeast of
Guthrie to 3 miles south of Clairemont, moving southeast at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated. At 550 am, a wind gust to 60 mph was
reported at Paducah, and at 540 am, a gust to 59 mph was
recorded at Guthrie.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Munday, Knox City, Benjamin, Truscott, Gilliland and Rhineland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3404 10005 3383 9962 3340 9960 3340 9999
3383 10000 3384 10005
TIME...MOT...LOC 1058Z 312DEG 29KT 3398 10012 3345 10017 3312 10076
HAIL...1.00IN
WIND...60MPH
$$
CMS2 follow-up statements
459
WWUS54 KOUN 021117
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
617 AM CDT Wed Jun 2 2021
TXC155-021127-
/O.CAN.KOUN.SV.W.0271.000000T0000Z-210602T1145Z/
Foard TX-
617 AM CDT Wed Jun 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN FOARD COUNTY IS
CANCELLED...
The storms which prompted the warning have weakened. Therefore, the
warning has been cancelled.
LAT...LON 3340 9960 3340 9999 3373 10000 3367 9961
TIME...MOT...LOC 1117Z 312DEG 29KT 3388 9999 3335 10004 3303 10063
$$
TXC275-021145-
/O.CON.KOUN.SV.W.0271.000000T0000Z-210602T1145Z/
Knox TX-
617 AM CDT Wed Jun 2 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 AM CDT
FOR SOUTHWESTERN KNOX COUNTY...
At 617 AM CDT, severe thunderstorms were located along a line
extending from 13 miles east of Chalk to 11 miles west of Rochester
to 11 miles southeast of Clairemont, moving southeast at 35 mph.
HAZARD...60 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...
Munday, Knox City, Benjamin and Rhineland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3340 9960 3340 9999 3373 10000 3367 9961
TIME...MOT...LOC 1117Z 312DEG 29KT 3388 9999 3335 10004 3303 10063
HAIL...1.00IN
WIND...60MPH
$$
CMS265
WWUS54 KOUN 021142
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
642 AM CDT Wed Jun 2 2021
TXC275-021152-
/O.EXP.KOUN.SV.W.0271.000000T0000Z-210602T1145Z/
Knox TX-
642 AM CDT Wed Jun 2 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN KNOX COUNTY WILL
EXPIRE AT 645 AM CDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with these thunderstorms.
LAT...LON 3340 9960 3340 9999 3373 10000 3367 9961
TIME...MOT...LOC 1142Z 312DEG 29KT 3377 9984 3324 9989 3292 10048
$$
CMSThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 5:17 AM CDT | Special Weather Statement | OUN | Foard | 43 min |
| Jun 2, 5:44 AM CDT | Special Weather Statement | OUN | Knox | 31 min |
| Jun 2, 6:56 AM CDT | Special Weather Statement | OUN | Baylor | 34 min |
| Jun 2, 2:55 PM CDT | Special Weather Statement | OUN | Clay | 35 min |
| Jun 2, 3:38 PM CDT | Severe Thunderstorm Warning | OUN | Clay | 52 min |
| Jun 2, 4:08 PM CDT | Severe Thunderstorm Warning | OUN | Wichita | 52 min |
| Jun 2, 4:54 PM CDT | Special Weather Statement | OUN | Wichita | 36 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.