Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 168, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 11, 2021, 1:37 AM CDT for Creek County, Osage County, Pawnee County, Oklahoma. It was in force for 33 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
- Oct 11, 2021, 1:37 AM CDT (06:37 UTC)
- Expired
- Oct 11, 2021, 2:10 AM CDT
- In force
- 33 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Creek County, OK, Osage County, OK, Pawnee County, OK
The radar
The Tulsa radar (KINX), 87 km from the middle of the area, began a volume at 06:39 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 |
|---|---|---|---|
| Oct 10, 9:24 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 6.6 hours before the alert went out and 147 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
- 1436 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1199 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 8.8
The text
As transmitted.
599
WUUS54 KTSA 110637
SVRTSA
OKC037-113-117-110730-
/O.NEW.KTSA.SV.W.0168.211011T0637Z-211011T0730Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
137 AM CDT Mon Oct 11 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Southeastern Osage County in northeastern Oklahoma...
Northwestern Creek County in northeastern Oklahoma...
Southeastern Pawnee County in northeastern Oklahoma...
* Until 230 AM CDT.
* At 137 AM CDT, severe thunderstorms were located along a line
extending from 2 miles west of Hallett to 4 miles southwest of
Mannford, moving northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations in or near the path include...
Hominy... Cleveland...
Wynona... Jennings...
Avant... Westport...
Osage... Hallett...
Blackburn... Terlton...
Maramec... Pershing...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3670 9651 3650 9605 3609 9643 3614 9662
3616 9662 3616 9667 3617 9671
TIME...MOT...LOC 0637Z 206DEG 35KT 3624 9661 3608 9640
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$2 follow-up statements
782
WWUS54 KTSA 110649
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
149 AM CDT Mon Oct 11 2021
OKC037-110659-
/O.CAN.KTSA.SV.W.0168.000000T0000Z-211011T0730Z/
Creek OK-
149 AM CDT Mon Oct 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CREEK COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3650 9605 3616 9637 3616 9638 3620 9651
3624 9661 3629 9666 3670 9651
TIME...MOT...LOC 0649Z 195DEG 46KT 3636 9657 3621 9634
$$
OKC113-117-110730-
/O.CON.KTSA.SV.W.0168.000000T0000Z-211011T0730Z/
Osage OK-Pawnee OK-
149 AM CDT Mon Oct 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM CDT
FOR SOUTHEASTERN OSAGE AND SOUTHEASTERN PAWNEE COUNTIES...
At 149 AM CDT, severe thunderstorms were located along a line
extending from 2 miles southeast of Blackburn to near Westport,
moving north at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations in or near the path include...
Hominy... Cleveland...
Wynona... Avant...
Westport... Osage...
Hallett... Blackburn...
Pershing...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3650 9605 3616 9637 3616 9638 3620 9651
3624 9661 3629 9666 3670 9651
TIME...MOT...LOC 0649Z 195DEG 46KT 3636 9657 3621 9634
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$600
WWUS54 KTSA 110710
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
210 AM CDT Mon Oct 11 2021
OKC113-117-110720-
/O.CAN.KTSA.SV.W.0168.000000T0000Z-211011T0730Z/
Osage OK-Pawnee OK-
210 AM CDT Mon Oct 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OSAGE AND
SOUTHEASTERN PAWNEE COUNTIES IS CANCELLED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds
of 40 to 50 mph are still possible with these thunderstorms.
LAT...LON 3650 9605 3616 9637 3616 9638 3620 9651
3624 9661 3629 9666 3670 9651
TIME...MOT...LOC 0708Z 206DEG 35KT 3653 9646 3638 9623
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 8:04 PM CDT | Flash Flood Warning | TSA | Osage, Pawnee | 4 hr |
| Oct 10, 8:05 PM CDT | Special Weather Statement | TSA | Pawnee | 55 min |
| Oct 10, 8:21 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 54 min |
| Oct 10, 8:41 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 64 min |
| Oct 10, 9:17 PM CDT | Special Weather Statement | TSA | Osage | 58 min |
| Oct 10, 9:28 PM CDT | Tornado Warning | TSA | Creek, Okfuskee | 24 min |
| Oct 10, 9:36 PM CDT | Severe Thunderstorm Warning | TSA | Creek, McIntosh, Okfuskee, Okmulgee, Tulsa | 54 min |
| Oct 10, 9:55 PM CDT | Special Weather Statement | TSA | Osage | 50 min |
| Oct 10, 10:01 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Pittsburg | 59 min |
| Oct 10, 10:05 PM CDT | Tornado Warning | TSA | Okmulgee, Tulsa, Wagoner | 25 min |
| Oct 10, 10:09 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Osage, Rogers, Tulsa, Washington | 36 min |
| Oct 10, 10:19 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner | 56 min |
| Oct 10, 10:21 PM CDT | Tornado Warning | TSA | McIntosh, Pittsburg | 39 min |
| Oct 10, 10:29 PM CDT | Tornado Warning | TSA | Tulsa, Wagoner | 46 min |
| Oct 10, 10:41 PM CDT | Areal Flood Advisory | TSA | Cherokee, Haskell, McIntosh, Muskogee, Okfuskee, Okmulgee and 3 more | 3 hr |
| Oct 10, 10:41 PM CDT | Tornado Warning | TSA | McIntosh, Muskogee, Okmulgee | 34 min |
| Oct 10, 10:43 PM CDT | Tornado Warning | TSA | Wagoner | 32 min |
| Oct 10, 10:53 PM CDT | Severe Thunderstorm Warning | TSA | Choctaw, Latimer, Pittsburg, Pushmataha | 67 min |
| Oct 10, 10:56 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Delaware, McIntosh, Mayes, Muskogee, Rogers and 1 more | 64 min |
| Oct 10, 10:58 PM CDT | Tornado Warning | TSA | Haskell, McIntosh, Muskogee, Pittsburg | 47 min |
| Oct 10, 11:05 PM CDT | Tornado Warning | TSA | Mayes, Rogers, Wagoner | 40 min |
| Oct 10, 11:33 PM CDT | Tornado Warning | TSA | Cherokee, Muskogee, Sequoyah | 42 min |
| Oct 10, 11:43 PM CDT | Areal Flood Advisory | TSA | Latimer, LeFlore, Pushmataha | 70 min |
| Oct 10, 11:48 PM CDT | Areal Flood Advisory | TSA | Adair, Cherokee, Delaware, Mayes | 110 min |
| Oct 10, 11:55 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Delaware, Mayes, Ottawa | 50 min |
| Oct 11, 12:07 AM CDT | Tornado Warning | TSA | Adair, Cherokee | 38 min |
| Oct 11, 12:09 AM CDT | Tornado Warning | TSA | Delaware | 39 min |
| Oct 11, 1:18 AM CDT | Special Weather Statement | TSA | Osage, Pawnee | 42 min |
| Oct 11, 1:26 AM CDT | Special Weather Statement | TSA | Creek, Tulsa | 49 min |
| Oct 11, 1:34 AM CDT | Areal Flood Advisory | TSA | Creek, Osage, Pawnee | 116 min |
| Oct 11, 2:02 AM CDT | Special Weather Statement | TSA | Rogers, Tulsa, Wagoner, Washington | 43 min |
| Oct 11, 2:09 AM CDT | Special Weather Statement | TSA | Washington | 51 min |
| Oct 11, 2:34 AM CDT | Special Weather Statement | TSA | Craig, Delaware, Mayes, Nowata, Ottawa | 56 min |
| Oct 11, 3:27 AM CDT | Special Weather Statement | TSA | Ottawa | 48 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.