Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 4, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 28, 2021, 1:02 PM CST for Choctaw County, Oklahoma. It was in force for 28 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
- Feb 28, 2021, 1:02 PM CST (19:02 UTC)
- Expired
- Feb 28, 2021, 1:30 PM CST
- In force
- 28 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Choctaw County, OK
The radar
The Western Arkansas radar (KSRX), 175 km from the middle of the area, began a volume at 19:03 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 28, 10:43 AM CST | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 7.0 hours before the alert went out and 218 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
- 1316 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 666 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 3.6
The text
As transmitted.
051
WUUS54 KTSA 281902
SVRTSA
OKC023-281930-
/O.NEW.KTSA.SV.W.0004.210228T1902Z-210228T1930Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
102 PM CST Sun Feb 28 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Eastern Choctaw County in southeastern Oklahoma...
* Until 130 PM CST.
* At 102 PM CST, a severe thunderstorm was located 7 miles southeast
of Hugo, moving northeast at 55 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 in or near the path include...
Fort Towson... Sawyer...
Raymond Gary State Park... Grant...
Ord... Fallon...
Huskey... Swink...
LAT...LON 3387 9545 3388 9546 3389 9546 3387 9550
3389 9551 3394 9556 3416 9518 3416 9516
3397 9516 3395 9520 3396 9523 3393 9525
3387 9538
TIME...MOT...LOC 1902Z 234DEG 46KT 3392 9544
HAIL...1.00IN
WIND...60MPH
$$2 follow-up statements
230
WWUS54 KTSA 281912
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
112 PM CST Sun Feb 28 2021
OKC023-281930-
/O.CON.KTSA.SV.W.0004.000000T0000Z-210228T1930Z/
Choctaw OK-
112 PM CST Sun Feb 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM CST
FOR EASTERN CHOCTAW COUNTY...
At 112 PM CST, a severe thunderstorm was located 3 miles southwest of
Raymond Gary State Park, moving northeast at 50 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations in or near the path include...
Fort Towson... Sawyer...
Raymond Gary State Park... Huskey...
Swink... Fallon...
LAT...LON 3399 9543 3416 9518 3416 9516 3397 9516
3395 9520 3396 9523 3393 9525 3389 9534
3391 9537
TIME...MOT...LOC 1912Z 238DEG 43KT 3396 9531
HAIL...1.00IN
WIND...60MPH
$$274
WWUS54 KTSA 281926
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
126 PM CST Sun Feb 28 2021
OKC023-281936-
/O.EXP.KTSA.SV.W.0004.000000T0000Z-210228T1930Z/
Choctaw OK-
126 PM CST Sun Feb 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CHOCTAW COUNTY WILL
EXPIRE AT 130 PM CST...
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 600 PM CST for
southeastern Oklahoma.
LAT...LON 3399 9543 3416 9518 3416 9516 3397 9516
3395 9520 3396 9523 3393 9525 3389 9534
3391 9537
TIME...MOT...LOC 1926Z 234DEG 46KT 3406 9514
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 9:15 PM CST | Dense Fog Advisory | TSA | Choctaw, Haskell, Latimer, McIntosh, Muskogee, Okfuskee and 3 more | 6 hr |
| Feb 28, 10:33 AM CST | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 42 min |
| Feb 28, 11:32 AM CST | Special Weather Statement | TSA | Choctaw | 43 min |
| Feb 28, 11:39 AM CST | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 38 min |
| Feb 28, 12:39 PM CST | Special Weather Statement | TSA | Choctaw | 36 min |
| Feb 28, 12:52 PM CST | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 23 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 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.