Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 158, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 10, 2021, 6:47 PM CDT for Osage County, Oklahoma. It was in force for 58 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 10, 2021, 6:47 PM CDT (23:47 UTC)
- Expired
- Oct 10, 2021, 7:45 PM CDT
- In force
- 58 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Osage County, OK
The radar
The Vance AFB radar (KVNX), 114 km from the middle of the area, began a volume at 23:48 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 10, 6:49 PM CDT | HAIL 2 | 16 Wsw Apperson, OK | 2 INCH HAIL REPORTED SE OF PONCA CITY. |
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 |
|---|---|---|---|
| Oct 10, 3:22 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.8 hours before the alert went out and 171 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
- 8 J/kg
- Mixed-layer CIN
- -777 J/kg
- Mixed-layer LCL
- 1314 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 273 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
213
WUUS54 KTSA 102347
SVRTSA
OKC113-110045-
/O.NEW.KTSA.SV.W.0158.211010T2347Z-211011T0045Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
647 PM CDT Sun Oct 10 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Northwestern Osage County in northeastern Oklahoma...
* Until 745 PM CDT.
* At 647 PM CDT, a severe thunderstorm was located 8 miles southeast
of Ponca City, moving northeast 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...
Shidler... Burbank...
Grainola... Foraker...
Webb City... Apperson...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Oklahoma.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3700 9620 3647 9698 3649 9701 3653 9700
3655 9690 3658 9689 3660 9692 3658 9698
3659 9705 3660 9704 3668 9706 3670 9703
3668 9694 3675 9689 3674 9683 3677 9682
3678 9675 3700 9675
TIME...MOT...LOC 2347Z 215DEG 37KT 3661 9700
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
693 follow-up statements
239
WWUS54 KTSA 110003
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
703 PM CDT Sun Oct 10 2021
OKC113-110045-
/O.CON.KTSA.SV.W.0158.000000T0000Z-211011T0045Z/
Osage OK-
703 PM CDT Sun Oct 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR NORTHWESTERN OSAGE COUNTY...
At 701 PM CDT, a severe thunderstorm was located 7 miles south of Kaw
City, moving northeast at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Trained weather spotters reported 2-inch diameter hail in
McCord at 649 pm.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations in or near the path include...
Shidler... Burbank...
Grainola... Foraker...
Webb City... Apperson...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Oklahoma.
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
&&
LAT...LON 3700 9620 3659 9681 3660 9692 3670 9703
3668 9694 3675 9689 3674 9683 3677 9682
3678 9675 3700 9675
TIME...MOT...LOC 0001Z 227DEG 28KT 3666 9689
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
69628
WWUS54 KTSA 110023
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
723 PM CDT Sun Oct 10 2021
OKC113-110045-
/O.CON.KTSA.SV.W.0158.000000T0000Z-211011T0045Z/
Osage OK-
723 PM CDT Sun Oct 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR NORTHWESTERN OSAGE COUNTY...
At 723 PM CDT, a severe thunderstorm was located 3 miles north of
Burbank, moving northeast at 30 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...
Shidler... Burbank...
Grainola... Foraker...
Webb City... Apperson...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Oklahoma.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3662 9676 3675 9689 3674 9683 3677 9682
3678 9675 3700 9675 3700 9620
TIME...MOT...LOC 0023Z 227DEG 27KT 3674 9675
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
69621
WWUS54 KTSA 110044
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
744 PM CDT Sun Oct 10 2021
OKC113-110054-
/O.EXP.KTSA.SV.W.0158.000000T0000Z-211011T0045Z/
Osage OK-
744 PM CDT Sun Oct 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OSAGE COUNTY WILL
EXPIRE AT 745 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small hail
and gusty winds to 40 mph are still possible with this thunderstorm.
A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Oklahoma.
LAT...LON 3662 9676 3675 9689 3674 9683 3677 9682
3678 9675 3700 9675 3700 9620
TIME...MOT...LOC 0044Z 221DEG 25KT 3682 9664
$$
69The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 10, 12:12 PM CDT | Flash Flood Watch | TSA | Craig, Creek, Delaware, Mayes, Nowata, Okfuskee and 7 more | 16 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.