Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 12, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Mar 17, 2021, 4:25 AM CDT for 4 counties in Oklahoma. It was in force for 50 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
- Mar 17, 2021, 4:25 AM CDT (09:25 UTC)
- Expired
- Mar 17, 2021, 5:15 AM CDT
- In force
- 50 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Nowata County, OK, Osage County, OK, Pawnee County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 71 km from the middle of the area, began a volume at 09:26 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 |
|---|---|---|---|
| Mar 17, 5:16 AM CDT | HAIL 0.75 | Bartlesville, OK | PICTURE ON SOCIAL MEDIA. |
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 |
|---|---|---|---|
| Mar 17, 1:54 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 9.4 hours before the alert went out and 197 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
- 626 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1825 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted.
748
WUUS54 KTSA 170925
SVRTSA
OKC105-113-117-147-171015-
/O.NEW.KTSA.SV.W.0012.210317T0925Z-210317T1015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
425 AM CDT Wed Mar 17 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Osage County in northeastern Oklahoma...
Washington County in northeastern Oklahoma...
Western Nowata County in northeastern Oklahoma...
Central Pawnee County in northeastern Oklahoma...
* Until 515 AM CDT.
* At 424 AM CDT, severe thunderstorms were located along a line
extending from 8 miles south of Cedar Vale to 6 miles southeast of
Shidler to 3 miles west of Skedee, moving east 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...
Bartlesville... Pawhuska...
Pawnee... Hominy...
Dewey... Fairfax...
Barnsdall... Copan...
Ramona... Shidler...
Wynona... Ochelata...
Ralston... Avant...
Vera... Burbank...
Wann... Blackburn...
Skedee... Foraker...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3700 9572 3660 9577 3660 9581 3642 9581
3642 9600 3638 9600 3630 9685 3671 9674
3700 9659
TIME...MOT...LOC 0924Z 258DEG 48KT 3699 9647 3673 9655 3637 9676
HAIL...1.00IN
WIND...60MPH
$$3 follow-up statements
624
WWUS54 KTSA 170942
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
442 AM CDT Wed Mar 17 2021
OKC105-113-117-147-171015-
/O.CON.KTSA.SV.W.0012.000000T0000Z-210317T1015Z/
Osage OK-Washington OK-Nowata OK-Pawnee OK-
442 AM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM CDT
FOR OSAGE...WASHINGTON...WESTERN NOWATA AND CENTRAL PAWNEE
COUNTIES...
At 442 AM CDT, severe thunderstorms were located along a line
extending from Chautauqua to 3 miles northwest of Pawhuska to 4 miles
west of Hominy, moving east at 50 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations in or near the path include...
Bartlesville... Pawhuska...
Hominy... Dewey...
Barnsdall... Copan...
Ramona... Wynona...
Ochelata... Avant...
Vera... Wann...
Blackburn... Skedee...
Bigheart... Bartlesville Municipal Airport...
Osage Hills State Park... Pearsonia...
Hulah... Sunset Lake...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3700 9572 3660 9577 3660 9581 3642 9581
3642 9600 3638 9600 3631 9679 3700 9642
TIME...MOT...LOC 0942Z 260DEG 42KT 3704 9618 3671 9637 3642 9647
HAIL...0.88IN
WIND...60MPH
$$058
WWUS54 KTSA 171000
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
500 AM CDT Wed Mar 17 2021
OKC105-113-117-147-171015-
/O.CON.KTSA.SV.W.0012.000000T0000Z-210317T1015Z/
Osage OK-Washington OK-Nowata OK-Pawnee OK-
500 AM CDT Wed Mar 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM CDT
FOR EASTERN OSAGE...WASHINGTON...WESTERN NOWATA AND CENTRAL PAWNEE
COUNTIES...
At 500 AM CDT, severe thunderstorms were located along a line
extending from 3 miles east of Hulah to 3 miles northwest of
Barnsdall to 3 miles south of Hominy, moving east at 50 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...
Bartlesville... Pawhuska...
Hominy... Dewey...
Barnsdall... Copan...
Ramona... Wynona...
Ochelata... Avant...
Vera... Wann...
Blackburn... Skedee...
Bigheart... Bartlesville Municipal Airport...
Osage Hills State Park... Hulah...
Sunset Lake... Okesa...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3700 9572 3660 9577 3660 9581 3642 9581
3642 9600 3638 9600 3631 9679 3700 9617
TIME...MOT...LOC 1000Z 267DEG 43KT 3694 9597 3660 9621 3636 9638
HAIL...0.75IN
WIND...60MPH
$$543
WWUS54 KTSA 171015
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
515 AM CDT Wed Mar 17 2021
OKC105-113-117-147-171025-
/O.EXP.KTSA.SV.W.0012.000000T0000Z-210317T1015Z/
Osage OK-Washington OK-Nowata OK-Pawnee OK-
515 AM CDT Wed Mar 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OSAGE...WASHINGTON...
WESTERN NOWATA AND CENTRAL PAWNEE COUNTIES HAS EXPIRED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been allowed to expire. However small hail
and gusty winds are still possible with these thunderstorms.
A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
northeastern Oklahoma.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Tulsa.
LAT...LON 3700 9572 3660 9577 3660 9581 3642 9581
3642 9600 3638 9600 3631 9679 3700 9617
TIME...MOT...LOC 1015Z 258DEG 48KT 3697 9577 3663 9601 3639 9618
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 1:25 AM CDT | Special Weather Statement | TSA | LeFlore | 35 min |
| Mar 17, 1:33 AM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 42 min |
| Mar 17, 2:04 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 41 min |
| Mar 17, 2:44 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 46 min |
| Mar 17, 3:28 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 47 min |
| Mar 17, 3:46 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 44 min |
| Mar 17, 4:19 AM CDT | Special Weather Statement | TSA | Nowata, Washington | 26 min |
| Mar 17, 4:22 AM CDT | Areal Flood Advisory | TSA | Osage, Pawnee | 3 hr |
| Mar 17, 4:37 AM CDT | Special Weather Statement | TSA | Pawnee | 53 min |
| Mar 17, 4:52 AM CDT | Special Weather Statement | TSA | Cherokee, Craig, Delaware, McIntosh, Mayes, Muskogee and 4 more | 38 min |
| Mar 17, 5:13 AM CDT | Special Weather Statement | TSA | Nowata, Washington | 47 min |
| Mar 17, 5:14 AM CDT | Special Weather Statement | TSA | Nowata, Washington | 46 min |
| Mar 17, 5:24 AM CDT | Special Weather Statement | TSA | Pawnee | 36 min |
| Mar 17, 5:27 AM CDT | Special Weather Statement | TSA | Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 4 more | 33 min |
| Mar 17, 5:54 AM CDT | Special Weather Statement | TSA | Craig, Creek, Nowata, Ottawa, Rogers, Tulsa | 51 min |
| Mar 17, 5:57 AM CDT | Special Weather Statement | TSA | Adair, Cherokee, Delaware, Haskell, LeFlore, Sequoyah | 48 min |
| Mar 17, 6:15 AM CDT | Special Weather Statement | TSA | Choctaw | 45 min |
| Mar 17, 6:33 AM CDT | Special Weather Statement | TSA | Adair | 42 min |
| Mar 17, 6:46 AM CDT | Special Weather Statement | TSA | Ottawa | 29 min |
| Mar 17, 1:42 PM CDT | Special Weather Statement | TSA | Tulsa | 33 min |
| Mar 17, 1:46 PM CDT | Severe Thunderstorm Warning | TSA | Rogers, Tulsa, Wagoner | 44 min |
| Mar 17, 1:54 PM CDT | Special Weather Statement | TSA | Delaware | 36 min |
| Mar 17, 1:58 PM CDT | Tornado Warning | TSA | Creek | 32 min |
| Mar 17, 2:13 PM CDT | Wind Advisory | TSA | Craig, Creek, Nowata, Okfuskee, Okmulgee, Pawnee and 3 more | 7 hr |
| Mar 17, 2:17 PM CDT | Tornado Warning | TSA | Rogers, Wagoner | 28 min |
| Mar 17, 2:28 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Tulsa | 47 min |
| Mar 17, 2:32 PM CDT | Special Weather Statement | TSA | Delaware | 43 min |
| Mar 17, 3:11 PM CDT | Special Weather Statement | TSA | Rogers | 34 min |
| Mar 17, 3:14 PM CDT | Special Weather Statement | TSA | Nowata | 31 min |
| Mar 17, 3:16 PM CDT | Special Weather Statement | TSA | Delaware | 29 min |
| Mar 17, 3:16 PM CDT | Special Weather Statement | TSA | Delaware | 29 min |
| Mar 17, 3:23 PM CDT | Special Weather Statement | TSA | Craig | 37 min |
| Mar 17, 3:31 PM CDT | Special Weather Statement | TSA | Washington | 29 min |
| Mar 17, 3:51 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Washington | 10 min |
| Mar 17, 4:14 PM CDT | Special Weather Statement | TSA | Ottawa | 31 min |
| Mar 17, 4:58 PM CDT | Special Weather Statement | TSA | Delaware | 32 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.