Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 38, NWS Tulsa, OK

April 11, 2022Latimer County, LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 11, 2022, 6:41 PM CDT for Latimer County, LeFlore County, Oklahoma. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 11, 2022, 6:41 PM CDT (23:41 UTC)
Expired: Apr 11, 2022, 7:45 PM CDT
In force: 64 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Latimer County, OK, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 72 km from the middle of the area, began a volume at 23:42 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
Dec 31, 10:35 PM CST	Severe Thunderstorm Watch	SPC	353 days
Apr 11, 3:31 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.7 hours before the alert went out and 224 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1233 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 314 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 11, 2:35 PM CDT, 4 hours 6 minutes earlier.

Area forecast discussion, Apr 11, 2:35 PM CDT, 4 hours 6 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
235 PM CDT Mon Apr 11 2022

...New SHORT TERM, LONG TERM...

.SHORT TERM...
(Through tonight )
Issued at 209 PM CDT Mon Apr 11 2022

The primary short term concern focuses on severe weather potential
through this evening, primarily from southeast OK through parts
of west central AR, along and south of quasi-stationary boundary.
As of 2 PM, the boundary extended near I-40 in west central AR to
near MLC to a little south of ADM. Meso analysis showing a pocket
of SB CAPE aground 3000 j/kg near I-30 in NC TX/SC OK with little
cap remaining. As such most of the recent CAM guidance shows
development across SE OK/WC AR over the next few hours, with some
suggestion of more robust development closer to 00z farther to
the southwest. Storms should become supercellular rather quick
given the strength/orientation of deep layer shear, with all modes
of severe possible in any more discrete cells. These storms will
move off to the east with most ending around 06z or shortly
thereafter.

&&

.LONG TERM...
(Tomorrow through Monday)
Issued at 209 PM CDT Mon Apr 11 2022

Moist Gulf air will surge back north Tuesday in response to a
quickly approaching Pacific shortwave with entire area well
withing the warm sector. A sharp dryline will become established
west of I-35 as has been advertised for a few days now, but there
are a number of factors that could keep much, if any, convection
along the dry line in OK. Another consistent signal in the data
has been for a subtropical shortwave to lift northeast relatively
early in the day, forcing more widespread development in the warm
sector across TX/LA into southern OK, which would likely place
the OK portion of dry line within an area of subsidence. Most
guidance continues to support this with limited development. The
POP forecast for Tuesday mainly reflect potential associated
with the southern wave, which will have some severe potential. In
the event any storms fire on the dry line Tues afternoon, the
conditional prob of severe weather is quite high. Will also see
rather gusty winds Tuesday afternoon, fortunately we stay east of
the dry line which limits fire weather concerns some.

Higher chances of storms will eventually arrive in eastern Ok
Tuesday night into Wednesday morning as Pacific front overtakes
the dry line and sweeps through the area. These storms will also
have severe potential, though the highest may end up being just
east of the forecast area. Drier but cooler air behind the front
along with gusty NW winds will raise the fire weather potential,
though temperatures may stay below Red Flag criteria.

Patter will remain unsettled through the weekend with another
chance of showers and thunderstorms Easter weekend, with highest
chances appearing to be Saturday. A trend toward well below
normal temperatures may be shaping up early next week.

&&

.AVIATION...
(18Z TAFS)
Issued at 1206 PM CDT Mon Apr 11 2022

Thunderstorm impacts will be the main aviation concern for the
next 6 to 12 hours, with ongoing potential at the NE OK and far NW
AR sites, shifting southward to MLC and FSM late afternoon and
early evening. Expect potential for IFR conditions and possible
severe wind gusts at MLC and FSM late afternoon into evening.
Ceilings will decrease tonight, with periods of IFR/MVFR
conditions likely. Visibility reductions in fog should also occur
at the NE OK sites tonight. Winds will largely be light until
things shift to the south tomorrow morning and become gusty.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   56  82  57  67 /  10  20  30  30
FSM   61  81  63  74 /  50  30  50  70
MLC   59  80  60  75 /  20  30  30  30
BVO   51  82  53  66 /  10  10  40  30
FYV   56  79  58  70 /  40  20  50  80
BYV   54  78  60  71 /  40  20  50  80
MKO   56  79  59  71 /  20  20  30  40
MIO   51  79  56  66 /  10  10  40  60
F10   56  81  59  71 /  20  20  30  30
HHW   64  79  63  79 /  30  50  40  40

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...None.
AR...None.
&&

SHORT TERM...14
LONG TERM....14
AVIATION...22

Hazardous weather outlook, Apr 11, 12:34 PM CDT, 6 hours 7 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
1234 PM CDT Mon Apr 11 2022

ARZ001-002-010-011-019-020-029-OKZ049-053>076-121030-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
1234 PM CDT Mon Apr 11 2022

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This Afternoon and Tonight.
TORNADO.
	RISK...Limited.
	AREA...Southeast Oklahoma and West Central Arkansas.
	ONSET...After 5 PM.

SEVERE THUNDERSTORM.
	RISK...Elevated.
	AREA...Eastern Oklahoma and West Central Arkansas.
	ONSET...Ongoing.

DISCUSSION...
Isolated to scattered strong to severe thunderstorms are expected
to develop late this afternoon and into the evening along and
south of a boundary stalled across southeast Oklahoma and western
Arkansas. Hail to the size of tennis balls and damaging wind gusts
to 70 mph will be the main threats, with a limited tornado threat
especially for storms that interact with the boundary. These
storms are expected to shift east of the forecast area by
midnight.

In addition to the main threat area in southeast Oklahoma and
western Arkansas, ongoing storms across far northeast Oklahoma and
into far northwest Arkansas may produce marginally severe hail
through early afternoon.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Likely.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.
TUESDAY...Thunderstorm Potential...High Wind Potential.
WEDNESDAY...Severe Thunderstorm Potential...
       Very High Fire Weather Potential...High Wind Potential.
THURSDAY...No Hazards.
FRIDAY AND SATURDAY...Thunderstorm Potential...
       Very High Fire Weather Potential.
SUNDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
Tuesday and Wednesday may both feature organized severe weather
across eastern Oklahoma and northwest Arkansas. Tuesday's threat
is highly conditional, with the main question being how many
storms develop either ahead of a dryline expected to be near the
Interstate 35 corridor during the afternoon or across southeast
Oklahoma and into northwest Arkansas. An unstable airmass and
sufficient wind shear will be in place across the area, and any
storms that are able to develop with have a good chance to
strengthen to severe levels. Large hail, damaging winds and
tornadoes will all be possible tomorrow, but again, the overall
threat will be contingent on thunderstorms developing at all.

A cold front will sweep across the region Wednesday, with
additional strong to severe thunderstorms likely to develop along
it and sweep through the area. Strong winds and drier conditions
west of the cold front will increase fire weather concerns
Wednesday afternoon.

The potential for showers and storms will return over the
weekend as a frontal boundary moves into the region.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Apr 11, 5:35 PM CDT, 1 hour 6 minutes before

Special Weather Statement
National Weather Service Tulsa OK
535 PM CDT Mon Apr 11 2022

OKZ073-075-076-112300-
Pittsburg OK-Latimer OK-Le Flore OK-
535 PM CDT Mon Apr 11 2022

...A strong thunderstorm will impact portions of Latimer, west
central Le Flore and southeastern Pittsburg Counties through 600 PM
CDT...

At 535 PM CDT, Doppler radar indicated a strong thunderstorm 4 miles
southeast of Hartshorne, moving east at 35 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down small tree limbs and blow
         around unsecured objects. Minor damage to outdoor objects
         is possible.

Locations in or near the path include...
Wilburton...                      Hartshorne...
Red Oak...                        Higgins...
Damon...                          Bengal...
Talimena State Park...            Haileyville...
Gowen...                          Panola...
Dow...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Tornado Watch remains in effect until 1100 PM CDT for southeastern
Oklahoma.

&&

LAT...LON 3470 9560 3487 9563 3506 9503 3479 9493
TIME...MOT...LOC 2235Z 252DEG 30KT 3480 9551

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Local storm report, Apr 11, 5:51 PM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
551 PM CDT MON APR 11 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0548 PM     HAIL             3 NW VESTA              35.40N 94.10W
04/11/2022  U0.75 INCH       SEBASTIAN          AR   PUBLIC

            REPORT FROM MPING: DIME (0.75 IN.).

0544 PM     HAIL             3 SSE MEG               35.36N 93.86W
04/11/2022  E1.00 INCH       FRANKLIN           AR   PUBLIC

            PHOTO RELAYED VIA TWITTER. 4 MILES NORTH OF
            CAULKSVILLE.

&&

Local storm report, Apr 11, 5:59 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
559 PM CDT MON APR 11 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 PM     HAIL             CHARLESTON              35.30N 94.04W
04/11/2022  E2.75 INCH       FRANKLIN           AR   STORM CHASER

            PHOTO RELAYED VIA TWITTER. HAIL POSED NEXT
            TO AN ACTUAL BASEBALL.

&&

KAH

Local storm report, Apr 11, 6:09 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
609 PM CDT MON APR 11 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0518 PM     HAIL             LAVACA                  35.34N 94.18W
04/11/2022  E2.50 INCH       SEBASTIAN          AR   BROADCAST MEDIA

            PHOTO OF HAIL POSED NEXT TO A PLASTIC GOLF
            BALL AND A LIGHT BULB RELAYED BY BROADCAST
            MEDIA VIA TWITTER. TIME ESTIMATED VIA RADAR.

&&

KAH

Local storm report, Apr 11, 6:22 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
622 PM CDT MON APR 11 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0530 PM     HAIL             CHARLESTON              35.30N 94.04W
04/11/2022  E3.00 INCH       FRANKLIN           AR   STORM CHASER

            PHOTO RELAYED VIA SOCIAL MEDIA. TIME
            ESTIMATED FROM EARLIER REPORTS.

&&

KAH

Local storm report, Apr 11, 6:30 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
630 PM CDT MON APR 11 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0517 PM     TSTM WND DMG     BLOOMER                 35.29N 94.13W
04/11/2022                   SEBASTIAN          AR   EMERGENCY MNGR

            ROOF DAMAGE TO A RESIDENCE. MAY BE
            ASSOCIATED WITH A TORNADO.

&&

KAH

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 10, 10:28 PM CDT	Special Weather Statement	TSA	Osage	32 min
Apr 10, 10:38 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	52 min
Apr 10, 10:53 PM CDT	Special Weather Statement	TSA	Pawnee	37 min
Apr 10, 10:57 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	48 min
Apr 10, 11:20 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	25 min
Apr 10, 11:43 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Pawnee, Rogers, Tulsa, Washington	47 min
Apr 10, 11:54 PM CDT	Special Weather Statement	TSA	Kay	36 min
Apr 11, 12:15 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Nowata, Osage, Rogers, Tulsa and 2 more	45 min
Apr 11, 12:54 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	35 min
Apr 11, 12:58 AM CDT	Special Weather Statement	TSA	Mayes, Rogers	32 min
Apr 11, 2:38 AM CDT	Special Weather Statement	TSA	Creek, Tulsa	52 min
Apr 11, 12:02 PM CDT	Severe Thunderstorm Warning	TSA	Ottawa	43 min
Apr 11, 12:40 PM CDT	Special Weather Statement	TSA	Craig	35 min
Apr 11, 1:11 PM CDT	Special Weather Statement	TSA	Ottawa	34 min
Apr 11, 3:52 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	23 min
Apr 11, 4:13 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	LeFlore, Sequoyah	47 min
Apr 11, 4:17 PM CDT	Tornado Warning	TSA	LeFlore, Sequoyah	43 min
Apr 11, 5:35 PM CDT	Special Weather Statement	TSA	Latimer	25 min
Apr 11, 5:39 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pittsburg	66 min
Apr 11, 4:45 PM CDT	Tornado Warning	TSA	Crawford, Franklin, Sebastian	45 min
Apr 11, 4:49 PM CDT	Severe Thunderstorm Warning	TSA	Crawford	19 min
Apr 11, 5:06 PM CDT	Special Weather Statement	TSA	Franklin	24 min
Apr 11, 5:12 PM CDT	Tornado Warning	TSA	Franklin, Sebastian	48 min
Apr 11, 5:14 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Sebastian	16 min
Apr 11, 5:28 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	32 min
Apr 11, 5:59 PM CDT	Tornado Warning	TSA	Franklin, Sebastian	30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2022 Every severe thunderstorm warning in 2022

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.