Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 58, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 28, 2021, 8:25 PM CDT for Haskell County, Latimer County, LeFlore County, Oklahoma. It was in force for 50 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, 8:25 PM CDT (01:25 UTC)
- Expired
- Apr 28, 2021, 9:15 PM CDT
- In force
- 50 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Haskell County, OK, Latimer County, OK, LeFlore County, OK
The radar
The Western Arkansas radar (KSRX), 42 km from the middle of the area, began a volume at 01:23 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, 1.4 hours before the alert went out and 214 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.
746
WUUS54 KTSA 290125
SVRTSA
OKC061-077-079-290215-
/O.NEW.KTSA.SV.W.0058.210429T0125Z-210429T0215Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
825 PM CDT Wed Apr 28 2021
The National Weather Service in Tulsa has issued a
* Severe Thunderstorm Warning for...
Southeastern Haskell County in southeastern Oklahoma...
Northeastern Latimer County in southeastern Oklahoma...
Northern Le Flore County in southeastern Oklahoma...
* Until 915 PM CDT.
* At 825 PM CDT, a severe thunderstorm was located near Red Oak,
moving east at 35 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...
Poteau... Spiro...
Panama... Wister...
Howe... Red Oak...
Mccurtain... Bokoshe...
Fanshawe... Mc Curtain...
Lake Wister State Park... Lequire...
Shady Point... Cowlington...
Milton...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a basement or small
interior room.
For your protection move to an interior room on the lowest floor of a
building.
&&
A Tornado Watch remains in effect until 200 AM CDT for southeastern
Oklahoma.
LAT...LON 3489 9513 3509 9517 3531 9468 3529 9466
3529 9463 3533 9460 3532 9460 3493 9448
TIME...MOT...LOC 0125Z 258DEG 30KT 3498 9507
HAIL...1.00IN
WIND...60MPH
$$2 follow-up statements
062
WWUS54 KTSA 290143
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
843 PM CDT Wed Apr 28 2021
OKC061-077-079-290215-
/O.CON.KTSA.SV.W.0058.000000T0000Z-210429T0215Z/
Haskell OK-Latimer OK-Le Flore OK-
843 PM CDT Wed Apr 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN HASKELL...NORTHEASTERN LATIMER AND NORTHERN LE FLORE
COUNTIES...
At 843 PM CDT, severe thunderstorms were located along a line
extending from 3 miles northwest of Bokoshe to 9 miles southwest of
Panama to 4 miles northwest of Lake Wister State Park, moving
northeast at 35 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations in or near the path include...
Poteau... Spiro...
Panama... Wister...
Howe... Red Oak...
Mccurtain... Bokoshe...
Fanshawe... Mc Curtain...
Lake Wister State Park... Lequire...
Shady Point... Cowlington...
Milton...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
A Tornado Watch remains in effect until 200 AM CDT for southeastern
Oklahoma.
LAT...LON 3489 9513 3509 9517 3531 9468 3529 9466
3529 9463 3533 9460 3532 9460 3493 9448
TIME...MOT...LOC 0143Z 241DEG 32KT 3522 9484 3509 9480 3497 9483
HAIL...1.00IN
WIND...70MPH
$$684
WWUS54 KTSA 290154
SVSTSA
Severe Weather Statement
National Weather Service Tulsa OK
854 PM CDT Wed Apr 28 2021
OKC077-290204-
/O.CAN.KTSA.SV.W.0058.000000T0000Z-210429T0215Z/
Latimer OK-
854 PM CDT Wed Apr 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LATIMER COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore the warning has been cancelled.
A Tornado Watch remains in effect until 200 AM CDT for southeastern
Oklahoma.
LAT...LON 3490 9493 3494 9494 3494 9493 3506 9493
3506 9495 3517 9497 3531 9468 3529 9466
3529 9463 3533 9460 3493 9448
TIME...MOT...LOC 0154Z 258DEG 30KT 3524 9475 3511 9471 3499 9474
$$
OKC061-079-290215-
/O.CON.KTSA.SV.W.0058.000000T0000Z-210429T0215Z/
Haskell OK-Le Flore OK-
854 PM CDT Wed Apr 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN HASKELL AND NORTHERN LE FLORE COUNTIES...
At 854 PM CDT, severe thunderstorms were located along a line
extending from 3 miles northeast of Bokoshe to 4 miles southwest of
Panama to near Wister, moving east at 35 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations in or near the path include...
Poteau... Spiro...
Panama... Wister...
Howe... Mccurtain...
Bokoshe... Fanshawe...
Lake Wister State Park... Shady Point...
Cowlington... Milton...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A Tornado Watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted act quickly and move to a place
of safety inside a sturdy structure, such as a basement or small
interior room.
Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
A Tornado Watch remains in effect until 200 AM CDT for southeastern
Oklahoma.
LAT...LON 3490 9493 3494 9494 3494 9493 3506 9493
3506 9495 3517 9497 3531 9468 3529 9466
3529 9463 3533 9460 3493 9448
TIME...MOT...LOC 0154Z 258DEG 30KT 3524 9475 3511 9471 3499 9474
HAIL...1.00IN
WIND...70MPH
$$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, 8:31 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, 10:21 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 28 min |
| 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.