Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 61, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 28, 2021, 10:21 PM CDT for Okfuskee County, Oklahoma. It was in force for 28 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
- Apr 28, 2021, 10:21 PM CDT (03:21 UTC)
- Expired
- Apr 28, 2021, 10:49 PM CDT
- In force
- 28 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
County Okfuskee County, OK
The radar
The Norman radar (KTLX), 71 km from the middle of the area, began a volume at 03:22 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 |
|---|---|---|---|
| Apr 28, 7:55 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 3.4 hours before the alert went out and 292 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
- 48 J/kg
- Mixed-layer CIN
- -143 J/kg
- Mixed-layer LCL
- 761 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 320 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted.
819
WUUS54 KTSA 290321
SVRTSA
OKC107-290415-
/O.NEW.KTSA.SV.W.0061.210429T0321Z-210429T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
1021 PM CDT Wed Apr 28 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Central Okfuskee County in east central Oklahoma...
* Until 1115 PM CDT.
* At 1021 PM CDT, a severe thunderstorm was located 4 miles south of
Prague, moving east at 35 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...
Okemah... Okfuskee...
Boley... Paden...
Castle... Mason...
This includes Interstate 40 in Oklahoma between mile markers 212 and
226.
A Tornado Watch remains in effect until 200 AM CDT for northeastern
and east central Oklahoma.
LAT...LON 3553 9662 3564 9619 3540 9618 3536 9644
3546 9644 3546 9647 3543 9650 3543 9652
3546 9654 3544 9657 3543 9656 3542 9656
3541 9654 3539 9654 3541 9658 3540 9660
3540 9662
TIME...MOT...LOC 0321Z 251DEG 30KT 3542 9665
HAIL...1.50IN
WIND...60MPH
$$2 follow-up statements
928
WWUS54 KTSA 290340
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
1040 PM CDT Wed Apr 28 2021
OKC107-290415-
/O.CON.KTSA.SV.W.0061.000000T0000Z-210429T0415Z/
Okfuskee OK-
1040 PM CDT Wed Apr 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR CENTRAL OKFUSKEE COUNTY...
At 1040 PM CDT, a severe thunderstorm was located near Boley, moving
east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations in or near the path include...
Okemah... Okfuskee...
Boley... Castle...
Mason...
This includes Interstate 40 in Oklahoma between mile markers 212 and
226.
A Tornado Watch remains in effect until 200 AM CDT for northeastern
and east central Oklahoma.
LAT...LON 3552 9654 3564 9619 3540 9618 3536 9644
3546 9644 3546 9647 3543 9650 3543 9652
3546 9654 3546 9656 3549 9656
TIME...MOT...LOC 0340Z 247DEG 25KT 3546 9650
HAIL...1.00IN
WIND...60MPH
$$964
WWUS54 KTSA 290349
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
1049 PM CDT Wed Apr 28 2021
OKC107-290359-
/O.CAN.KTSA.SV.W.0061.000000T0000Z-210429T0415Z/
Okfuskee OK-
1049 PM CDT Wed Apr 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL OKFUSKEE COUNTY 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 small hail is
still possible with this thunderstorm.
A Tornado Watch remains in effect until 200 AM CDT for northeastern
and east central Oklahoma.
LAT...LON 3552 9654 3564 9619 3540 9618 3536 9644
3546 9644 3546 9647 3543 9650 3543 9652
3546 9654 3546 9656 3549 9656
TIME...MOT...LOC 0347Z 251DEG 30KT 3549 9641
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:19 PM CDT | Special Weather Statement | TSA | LeFlore | 41 min |
| Apr 28, 7:56 PM CDT | Special Weather Statement | TSA | Haskell, Latimer | 49 min |
| Apr 28, 8:25 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer, LeFlore | 50 min |
| Apr 28, 8:31 PM CDT | Flash Flood Warning | TSA | Haskell, Latimer, LeFlore, Pittsburg, Sequoyah | 4 hr |
| Apr 28, 8:50 PM CDT | Tornado Warning | TSA | LeFlore | 25 min |
| Apr 28, 9:06 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 39 min |
| Apr 28, 9:14 PM CDT | Tornado Warning | TSA | LeFlore | 31 min |
| Apr 28, 9:19 PM CDT | Areal Flood Advisory | TSA | LeFlore, Sequoyah | 3 hr |
| Apr 28, 9:27 PM CDT | Flash Flood Warning | TSA | LeFlore, Sequoyah | 3 hr |
| Apr 28, 10:40 PM CDT | Flash Flood Warning | TSA | Adair, Sequoyah | 4 hr |
| Apr 28, 10:58 PM CDT | Special Weather Statement | TSA | Choctaw | 47 min |
| Apr 29, 12:04 AM CDT | Special Weather Statement | TSA | Pushmataha | 26 min |
| Apr 29, 12:19 AM CDT | Flash Flood Warning | TSA | Haskell, Latimer, LeFlore, Muskogee, Pittsburg, Sequoyah | 6 hr |
| Apr 29, 12:25 AM CDT | Special Weather Statement | TSA | Pittsburg | 35 min |
| Apr 29, 12:54 AM CDT | Special Weather Statement | TSA | LeFlore | 36 min |
| Apr 29, 1:47 AM CDT | Areal Flood Advisory | TSA | Choctaw, LeFlore, Pushmataha | 4 hr |
| Apr 29, 1:49 AM CDT | Special Weather Statement | TSA | Choctaw | 41 min |
| Apr 29, 2:35 AM CDT | Flash Flood Warning | TSA | Adair, Sequoyah | 4 hr |
| Apr 29, 7:18 AM CDT | Areal Flood Warning | TSA | Choctaw, Haskell, Latimer, LeFlore, Pittsburg, Pushmataha and 1 more | 10 hr |
| Apr 29, 10:56 AM CDT | River Flood Warning | TSA | Cherokee | 4 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.