Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 24, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 9, 2021, 4:01 PM CDT for Osage County, Pawnee County, Oklahoma. It was in force for 44 min. 4 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, 4:01 PM CDT (21:01 UTC)
- Expired
- Apr 9, 2021, 4:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Osage County, OK, Pawnee County, OK
The radar
The Tulsa radar (KINX), 82 km from the middle of the area, began a volume at 21:01 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, 4:30 PM CDT | HAIL 1 | 3 E Cleveland, OK | |
| Apr 9, 4:35 PM CDT | HAIL 1.75 | 1 Nne Cleveland, OK | PING PONG BALL TO GOLFBALL HAIL AT OK 99 AND THE ARKANSAS RIVER FROM SOCIAL MEDIA. |
| Apr 9, 4:39 PM CDT | HAIL 1.5 | 3 Nne Cleveland, OK | |
| Apr 9, 4:39 PM CDT | HAIL 1.75 | 3 Nne Cleveland, OK | CORRECTS PREVIOUS HAIL REPORT FROM 3 NNE CLEVELAND. |
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 12:00Z, 9.0 hours before the alert went out and 148 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
- 1068 J/kg
- Mixed-layer CIN
- -311 J/kg
- Mixed-layer LCL
- 1414 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.6
The text
As transmitted.
903
WUUS54 KTSA 092101
SVRTSA
OKC113-117-092145-
/O.NEW.KTSA.SV.W.0024.210409T2101Z-210409T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
401 PM CDT Fri Apr 9 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Southeastern Osage County in northeastern Oklahoma...
Southeastern Pawnee County in northeastern Oklahoma...
* Until 445 PM CDT.
* At 401 PM CDT, a severe thunderstorm was located near Hallett,
moving northeast at 20 mph.
HAZARD...60 mph wind gusts and half dollar 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...
Hominy... Cleveland...
Osage... Hallett...
Terlton...
LAT...LON 3648 9643 3633 9620 3616 9653 3617 9654
3622 9662
TIME...MOT...LOC 2101Z 221DEG 17KT 3624 9651
HAIL...1.25IN
WIND...60MPH
$$3 follow-up statements
282
WWUS54 KTSA 092109
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
409 PM CDT Fri Apr 9 2021
OKC113-117-092145-
/O.CON.KTSA.SV.W.0024.000000T0000Z-210409T2145Z/
Osage OK-Pawnee OK-
409 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHEASTERN OSAGE AND SOUTHEASTERN PAWNEE COUNTIES...
At 409 PM CDT, a severe thunderstorm was located near Cleveland,
moving northeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations in or near the path include...
Hominy... Cleveland...
Osage... Hallett...
LAT...LON 3648 9643 3633 9620 3620 9648 3620 9654
3623 9661
TIME...MOT...LOC 2109Z 221DEG 17KT 3627 9648
HAIL...1.50IN
WIND...60MPH
$$652
WWUS54 KTSA 092114
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
414 PM CDT Fri Apr 9 2021
OKC113-117-092145-
/O.CON.KTSA.SV.W.0024.000000T0000Z-210409T2145Z/
Osage OK-Pawnee OK-
414 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHEASTERN OSAGE AND SOUTHEASTERN PAWNEE COUNTIES...
At 413 PM CDT, a severe thunderstorm was located over Cleveland,
moving northeast at 20 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations in or near the path include...
Hominy... Cleveland...
Osage...
LAT...LON 3648 9643 3633 9620 3622 9645 3622 9651
3625 9660
TIME...MOT...LOC 2113Z 221DEG 17KT 3629 9646
HAIL...2.00IN
WIND...60MPH
$$777
WWUS54 KTSA 092133
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
433 PM CDT Fri Apr 9 2021
OKC117-092143-
/O.CAN.KTSA.SV.W.0024.000000T0000Z-210409T2145Z/
Pawnee OK-
433 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PAWNEE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area therefore the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
northeastern Oklahoma.
LAT...LON 3648 9643 3633 9620 3627 9638 3630 9644
3631 9644 3633 9646 3633 9648 3632 9650
3633 9653
TIME...MOT...LOC 2133Z 217DEG 11KT 3634 9642
$$
OKC113-092145-
/O.CON.KTSA.SV.W.0024.000000T0000Z-210409T2145Z/
Osage OK-
433 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM CDT
FOR SOUTHEASTERN OSAGE COUNTY...
At 433 PM CDT, a severe thunderstorm was located near Osage, moving
northeast at 10 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations in or near the path include...
Hominy... Osage...
LAT...LON 3648 9643 3633 9620 3627 9638 3630 9644
3631 9644 3633 9646 3633 9648 3632 9650
3633 9653
TIME...MOT...LOC 2133Z 217DEG 11KT 3634 9642
HAIL...1.75IN
WIND...60MPH
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 3:08 PM CDT | Special Weather Statement | TSA | Ottawa | 37 min |
| Apr 9, 3:18 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Ottawa | 42 min |
| Apr 9, 3:51 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers, Tulsa, Washington | 39 min |
| Apr 9, 3:53 PM CDT | Special Weather Statement | TSA | Ottawa | 22 min |
| Apr 9, 4:18 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata, Rogers | 42 min |
| Apr 9, 4:19 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata, Rogers | 41 min |
| Apr 9, 4:32 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 43 min |
| Apr 9, 4:45 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 45 min |
| Apr 9, 4:56 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata | 14 min |
| Apr 9, 5:07 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 38 min |
| Apr 9, 5:13 PM CDT | Special Weather Statement | TSA | Osage | 32 min |
| Apr 9, 5:22 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 53 min |
| Apr 9, 5:33 PM CDT | Wind Advisory | TSA | Craig, Creek, Mayes, Nowata, Okfuskee, Okmulgee and 5 more | 5 hr |
| Apr 9, 5:46 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 44 min |
| Apr 9, 5:47 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers | 43 min |
| Apr 9, 5:47 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 43 min |
| Apr 9, 5:59 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 46 min |
| Apr 9, 6:09 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee, Washington | 51 min |
| Apr 9, 6:26 PM CDT | Special Weather Statement | TSA | Nowata | 34 min |
| Apr 9, 6:29 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa, Washington | 46 min |
| Apr 9, 6:47 PM CDT | Special Weather Statement | TSA | Craig | 28 min |
| Apr 9, 6:55 PM CDT | Special Weather Statement | TSA | Creek | 35 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.