Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 50, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 9, 2021, 9:58 PM CDT for Choctaw County, LeFlore County, Pushmataha County, Oklahoma. It was in force for 47 min. 1 report 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
- Apr 9, 2021, 9:58 PM CDT (02:58 UTC)
- Expired
- Apr 9, 2021, 10:45 PM CDT
- In force
- 47 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Choctaw County, OK, LeFlore County, OK, Pushmataha County, OK
The radar
The Western Arkansas radar (KSRX), 158 km from the middle of the area, began a volume at 02:59 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 |
|---|---|---|---|
| Apr 9, 10:18 PM CDT | TSTM WND DMG | Fort Towson, OK | DELAYED REPORT... A LIMB FELL AND SNAPPED A POWER METER POLE ON THE NORTH SIDE OF FT. TOWSON. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 9, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 3.0 hours before the alert went out and 226 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
- 148 J/kg
- Mixed-layer CIN
- -321 J/kg
- Mixed-layer LCL
- 2441 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 329 m²/s²
- 0-3 km storm-relative helicity
- 421 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
706
WUUS54 KTSA 100258
SVRTSA
OKC023-079-127-100345-
/O.NEW.KTSA.SV.W.0050.210410T0258Z-210410T0345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
958 PM CDT Fri Apr 9 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Central Pushmataha County in southeastern Oklahoma...
Eastern Choctaw County in southeastern Oklahoma...
South central Le Flore County in southeastern Oklahoma...
* Until 1045 PM CDT.
* At 957 PM CDT, severe thunderstorms were located along a line
extending from 5 miles east of Snow to near Kent to 8 miles
southeast of Goodland, moving east at 40 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...
Hugo... Antlers...
Fort Towson... Sawyer...
Rattan... Octavia...
Snow... Hugo Lake State Park...
Clayton Lake State Park... Kent...
Goodland... Messer...
Raymond Gary State Park... Nashoba...
Oleta... Cloudy...
Grant... Ord...
Fallon... Sobol...
LAT...LON 3389 9546 3387 9550 3389 9551 3388 9554
3414 9570 3461 9529 3458 9457 3451 9462
3451 9504 3425 9505 3424 9515 3394 9516
3396 9523 3389 9526 3391 9527 3390 9527
3387 9529 3389 9533 3387 9539
TIME...MOT...LOC 0257Z 283DEG 35KT 3440 9532 3413 9563 3388 9548
HAIL...1.00IN
WIND...60MPH
$$2 follow-up statements
845
WWUS54 KTSA 100322
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
1022 PM CDT Fri Apr 9 2021
OKC023-079-127-100345-
/O.CON.KTSA.SV.W.0050.000000T0000Z-210410T0345Z/
Pushmataha OK-Choctaw OK-Le Flore OK-
1022 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR SOUTHEASTERN PUSHMATAHA...EASTERN CHOCTAW AND SOUTH CENTRAL LE
FLORE COUNTIES...
At 1021 PM CDT, severe thunderstorms were located along a line
extending from 12 miles southeast of Nashoba to near Hugo Lake State
Park to 7 miles southeast of Goodland, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations in or near the path include...
Hugo... Fort Towson...
Sawyer... Octavia...
Goodland... Messer...
Hugo Lake State Park... Raymond Gary State Park...
Oleta... Grant...
Ord... Corinne...
Fallon... Sobol...
Swink... Frogville...
Apple... Huskey...
Honobia...
LAT...LON 3389 9546 3387 9550 3389 9551 3388 9554
3400 9561 3458 9491 3458 9457 3451 9462
3451 9497 3446 9505 3425 9505 3424 9515
3394 9516 3396 9523 3389 9526 3391 9527
3390 9527 3387 9529 3389 9533 3387 9539
TIME...MOT...LOC 0321Z 269DEG 35KT 3435 9506 3408 9537 3390 9547
HAIL...1.00IN
WIND...60MPH
$$693
WWUS54 KTSA 100337
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
1037 PM CDT Fri Apr 9 2021
OKC023-079-127-100347-
/O.EXP.KTSA.SV.W.0050.000000T0000Z-210410T0345Z/
Pushmataha OK-Choctaw OK-Le Flore OK-
1037 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PUSHMATAHA...
EASTERN CHOCTAW AND SOUTH CENTRAL LE FLORE COUNTIES WILL EXPIRE AT
1045 PM CDT...
The storms which prompted the warning will likely weaken below
severe limits, and exit the warned area. Therefore the warning will
be allowed to expire. However gusty winds are still possible.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern Oklahoma.
LAT...LON 3389 9546 3387 9550 3389 9551 3388 9554
3400 9561 3458 9491 3458 9457 3451 9462
3451 9497 3446 9505 3425 9505 3424 9515
3394 9516 3396 9523 3389 9526 3391 9527
3390 9527 3387 9529 3389 9533 3387 9539
TIME...MOT...LOC 0337Z 283DEG 35KT 3432 9489 3405 9520 3387 9530
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 7:02 PM CDT | Special Weather Statement | TSA | Rogers | 28 min |
| Apr 9, 7:09 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 51 min |
| Apr 9, 7:12 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 48 min |
| Apr 9, 7:24 PM CDT | Special Weather Statement | TSA | Tulsa | 36 min |
| Apr 9, 7:29 PM CDT | Special Weather Statement | TSA | Ottawa | 31 min |
| Apr 9, 7:38 PM CDT | Special Weather Statement | TSA | Craig, Nowata | 37 min |
| Apr 9, 7:38 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner | 52 min |
| Apr 9, 7:41 PM CDT | Tornado Warning | TSA | Creek, Tulsa | 20 min |
| Apr 9, 7:52 PM CDT | Special Weather Statement | TSA | Cherokee, Mayes | 23 min |
| Apr 9, 7:56 PM CDT | Special Weather Statement | TSA | Okfuskee | 34 min |
| Apr 9, 8:02 PM CDT | Severe Thunderstorm Warning | TSA | Delaware | 29 min |
| Apr 9, 8:28 PM CDT | Special Weather Statement | TSA | Cherokee, Mayes | 32 min |
| Apr 9, 8:29 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 46 min |
| Apr 9, 8:49 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 41 min |
| Apr 9, 8:59 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg, Pushmataha | 50 min |
| Apr 9, 9:03 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, McIntosh, Muskogee, Sequoyah | 42 min |
| Apr 9, 9:24 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 66 min |
| Apr 9, 9:27 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Sequoyah | 48 min |
| Apr 9, 9:30 PM CDT | Special Weather Statement | TSA | Muskogee | 30 min |
| Apr 9, 9:35 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 55 min |
| Apr 9, 9:37 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, LeFlore, Muskogee, Sequoyah | 38 min |
| Apr 9, 10:24 PM CDT | Special Weather Statement | TSA | LeFlore | 36 min |
| Apr 9, 10:33 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 42 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.