Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 149, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Sep 7, 2021, 8:04 PM CDT for Nowata County, Washington County, Oklahoma. It was in force for 23 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
- Sep 7, 2021, 8:04 PM CDT (01:04 UTC)
- Expired
- Sep 7, 2021, 8:27 PM CDT
- In force
- 23 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Nowata County, OK, Washington County, OK
The radar
The Tulsa radar (KINX), 78 km from the middle of the area, began a volume at 01:04 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 nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 1.1 hours before the alert went out and 180 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
- 116 J/kg
- Mixed-layer CIN
- -242 J/kg
- Mixed-layer LCL
- 2141 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
185
WUUS54 KTSA 080104
SVRTSA
OKC105-147-080145-
/O.NEW.KTSA.SV.W.0149.210908T0104Z-210908T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
804 PM CDT Tue Sep 7 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Northern Washington County in northeastern Oklahoma...
Northwestern Nowata County in northeastern Oklahoma...
* Until 845 PM CDT.
* At 804 PM CDT, a severe thunderstorm was located near Tyro, moving
south at 25 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... Dewey...
Copan... Wann...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Tulsa.
&&
LAT...LON 3675 9573 3674 9600 3700 9600 3700 9568
TIME...MOT...LOC 0104Z 005DEG 20KT 3703 9586
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$1 follow-up statement
426
WWUS54 KTSA 080127
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
827 PM CDT Tue Sep 7 2021
OKC105-147-080135-
/O.CAN.KTSA.SV.W.0149.000000T0000Z-210908T0145Z/
Washington OK-Nowata OK-
827 PM CDT Tue Sep 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WASHINGTON AND
NORTHWESTERN NOWATA COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However gusty winds are
still possible with this thunderstorm.
LAT...LON 3675 9573 3674 9600 3700 9600 3700 9568
TIME...MOT...LOC 0125Z 005DEG 20KT 3691 9587
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 1:38 AM CDT | Special Weather Statement | TSA | Sequoyah | 37 min |
| Sep 8, 2:15 AM CDT | Special Weather Statement | TSA | Haskell | 30 min |
| Sep 8, 2:45 AM CDT | Special Weather Statement | TSA | Haskell, Latimer, Sequoyah | 30 min |
| Sep 8, 3:14 AM CDT | Special Weather Statement | TSA | Haskell, Latimer, LeFlore | 31 min |
| Sep 8, 3:44 AM CDT | Special Weather Statement | TSA | Latimer, LeFlore, Pittsburg, Pushmataha | 31 min |
| Sep 8, 4:11 AM CDT | Special Weather Statement | TSA | Pushmataha | 49 min |
| Sep 8, 4:56 AM CDT | Areal Flood Advisory | TSA | Latimer, Pittsburg, Pushmataha | 3 hr |
| Sep 8, 5:05 AM CDT | Special Weather Statement | TSA | Choctaw | 40 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.