Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 44, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 9, 2021, 8:59 PM CDT for Latimer County, Pittsburg County, Pushmataha County, Oklahoma. It was in force for 50 min. 3 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
- Apr 9, 2021, 8:59 PM CDT (01:59 UTC)
- Expired
- Apr 9, 2021, 9:49 PM CDT
- In force
- 50 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Latimer County, OK, Pittsburg County, OK, Pushmataha County, OK
The radar
The Western Arkansas radar (KSRX), 144 km from the middle of the area, began a volume at 02:02 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 |
|---|---|---|---|
| Apr 9, 9:10 PM CDT | HAIL 0.75 | Alderson, OK | |
| Apr 9, 9:12 PM CDT | HAIL 0.75 | 1 W Krebs, OK | REPORT FROM MPING: DIME (0.75 IN.). |
| Apr 9, 9:20 PM CDT | HAIL 1 | 2 N Dow, OK |
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
Norman, OK (KOUN), launched 00:00Z, 2.0 hours before the alert went out and 168 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
- 1392 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1212 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.2
The text
As transmitted.
107
WUUS54 KTSA 100159
SVRTSA
OKC077-121-127-100300-
/O.NEW.KTSA.SV.W.0044.210410T0159Z-210410T0300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
859 PM CDT Fri Apr 9 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Northwestern Pushmataha County in southeastern Oklahoma...
Southwestern Latimer County in southeastern Oklahoma...
Southeastern Pittsburg County in southeastern Oklahoma...
* Until 1000 PM CDT.
* At 859 PM CDT, severe thunderstorms were located along a line
extending from Kiowa to Mcalester Regional Airport, moving east at
35 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations in or near the path include...
Mcalester... Wilburton...
Clayton... Hartshorne...
Krebs... Kiowa...
Savanna... Alderson...
Higgins... Damon...
Yanush... Stanley...
Mcalester Regional Airport... Dunbar...
Blanco... Haileyville...
Pittsburg... Eubanks...
Sardis... Gowen...
LAT...LON 3450 9578 3451 9567 3459 9567 3459 9588
3467 9588 3468 9589 3468 9593 3499 9579
3495 9510 3443 9541 3436 9578
TIME...MOT...LOC 0159Z 288DEG 30KT 3471 9591 3489 9577
HAIL...0.75IN
WIND...60MPH
$$2 follow-up statements
022
WWUS54 KTSA 100231
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
931 PM CDT Fri Apr 9 2021
OKC077-121-127-100300-
/O.CON.KTSA.SV.W.0044.000000T0000Z-210410T0300Z/
Pushmataha OK-Latimer OK-Pittsburg OK-
931 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT
FOR NORTHWESTERN PUSHMATAHA...SOUTHWESTERN LATIMER AND SOUTHEASTERN
PITTSBURG COUNTIES...
At 931 PM CDT, severe thunderstorms were located along a line
extending from 6 miles east of Daisy to 4 miles northwest of Yanush
to 5 miles west of Robbers Cave State Park, moving east at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations in or near the path include...
Wilburton... Clayton...
Hartshorne... Stanley...
Higgins... Damon...
Dunbar... Yanush...
Eubanks... Sardis...
Gowen... Panola...
LAT...LON 3450 9578 3451 9567 3459 9567 3459 9578
3480 9554 3498 9563 3495 9510 3443 9541
3436 9578
TIME...MOT...LOC 0231Z 265DEG 40KT 3455 9563 3477 9536 3497 9542
HAIL...1.00IN
WIND...60MPH
$$933
WWUS54 KTSA 100249
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
949 PM CDT Fri Apr 9 2021
OKC077-121-127-100259-
/O.CAN.KTSA.SV.W.0044.000000T0000Z-210410T0300Z/
Pushmataha OK-Latimer OK-Pittsburg OK-
949 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN PUSHMATAHA...
SOUTHWESTERN LATIMER AND SOUTHEASTERN PITTSBURG COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of the area.
Therefore the warning has been cancelled. However gusty winds are
still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern Oklahoma.
LAT...LON 3450 9578 3451 9567 3459 9567 3459 9578
3480 9554 3498 9563 3495 9510 3443 9541
3436 9578
TIME...MOT...LOC 0248Z 288DEG 30KT 3451 9546 3473 9519 3493 9525
$$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, 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, 9:58 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, LeFlore, Pushmataha | 47 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.