Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 174, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 15, 2021, 2:51 AM CDT for McIntosh County, Muskogee County, Okmulgee County, Oklahoma. It was in force for 39 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
- Oct 15, 2021, 2:51 AM CDT (07:51 UTC)
- Expired
- Oct 15, 2021, 3:30 AM CDT
- In force
- 39 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties McIntosh County, OK, Muskogee County, OK, Okmulgee County, OK
The radar
The Tulsa radar (KINX), 83 km from the middle of the area, began a volume at 07:53 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 |
|---|---|---|---|
| Oct 15, 3:26 AM CDT | TSTM WND GST 61 | Checotah, OK |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 7.9 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
- 421 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1034 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 161 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted.
904
WUUS54 KTSA 150751
SVRTSA
OKC091-101-111-150830-
/O.NEW.KTSA.SV.W.0174.211015T0751Z-211015T0830Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
251 AM CDT Fri Oct 15 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
McIntosh County in southeastern Oklahoma...
Central Muskogee County in east central Oklahoma...
Southeastern Okmulgee County in northeastern Oklahoma...
* Until 330 AM CDT.
* At 251 AM CDT, severe thunderstorms were located along a line
extending from near Okmulgee State Park to Schulter to 3 miles
southwest of Weleetka, moving east at 45 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...
Muskogee... Fort Gibson...
Checotah... Warner...
Morris... Dewar...
Oktaha... Boynton...
Grayson... Council Hill...
Rentiesville... Hoffman...
Stidham... Lake Eufaula State Park...
Keefeton... Wainwright...
Summit... Hitchita...
Pierce... Eram...
This includes Interstate 40 in Oklahoma between mile markers 239 and
278.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3568 9591 3580 9525 3530 9529 3530 9535
3532 9538 3533 9539 3533 9540 3530 9544
3529 9598 3536 9598
TIME...MOT...LOC 0751Z 259DEG 38KT 3563 9605 3552 9596 3531 9618
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
979
WWUS54 KTSA 150818
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
318 AM CDT Fri Oct 15 2021
OKC091-101-111-150830-
/O.CON.KTSA.SV.W.0174.000000T0000Z-211015T0830Z/
McIntosh OK-Muskogee OK-Okmulgee OK-
318 AM CDT Fri Oct 15 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR MCINTOSH...CENTRAL MUSKOGEE AND SOUTHEASTERN OKMULGEE COUNTIES...
At 318 AM CDT, severe thunderstorms were located along a line
extending from 2 miles north of Boynton to 4 miles northeast of
Council Hill to 5 miles west of Stidham, moving east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations in or near the path include...
Muskogee... Fort Gibson...
Checotah... Warner...
Oktaha... Boynton...
Council Hill... Rentiesville...
Stidham... Lake Eufaula State Park...
Keefeton... Wainwright...
Summit... Hitchita...
Pierce... Onapa...
This includes Interstate 40 in Oklahoma between mile markers 245 and
278.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3580 9525 3530 9529 3530 9535 3532 9538
3533 9539 3533 9540 3530 9544 3529 9598
3559 9573 3571 9576
TIME...MOT...LOC 0818Z 257DEG 39KT 3569 9567 3558 9558 3537 9580
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 10:27 PM CDT | Dense Fog Advisory | TSA | Adair, Cherokee, Delaware | 5 hr |
| Oct 15, 1:41 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 49 min |
| Oct 15, 1:44 AM CDT | Special Weather Statement | TSA | Creek, Tulsa | 46 min |
| Oct 15, 2:26 AM CDT | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee | 49 min |
| Oct 15, 2:29 AM CDT | Special Weather Statement | TSA | Rogers, Tulsa | 46 min |
| Oct 15, 2:37 AM CDT | Areal Flood Advisory | TSA | Creek, Osage, Tulsa | 3 hr |
| Oct 15, 3:13 AM CDT | Special Weather Statement | TSA | Mayes, Rogers, Wagoner | 47 min |
| Oct 15, 3:29 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, McIntosh, Muskogee, Wagoner | 46 min |
| Oct 15, 3:32 AM CDT | Areal Flood Advisory | TSA | Muskogee, Okmulgee, Tulsa, Wagoner | 118 min |
| Oct 15, 3:53 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Muskogee, Sequoyah | 52 min |
| Oct 15, 4:02 AM CDT | Special Weather Statement | TSA | Delaware | 43 min |
| Oct 15, 4:35 AM CDT | Special Weather Statement | TSA | Adair, Sequoyah | 55 min |
| Oct 15, 7:51 AM CDT | Areal Flood Advisory | TSA | Haskell, LeFlore, Muskogee, Sequoyah | 2 hr |
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.