Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 212, NWS Tulsa, OK

May 22, 2020Haskell County, Latimer County, LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 22, 2020, 9:53 PM CDT for Haskell County, Latimer County, LeFlore County, Oklahoma. It was in force for 52 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: May 22, 2020, 9:53 PM CDT (02:53 UTC)
Expired: May 22, 2020, 10:45 PM CDT
In force: 52 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 1.25 in
Wind: 70.0 mph

Counties Haskell County, OK, Latimer County, OK, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 71 km from the middle of the area, began a volume at 02:56 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 22, 7:34 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.9 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.

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: 3106 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 970 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 128 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

As transmitted.

170 
WUUS54 KTSA 230253
SVRTSA
OKC061-077-079-230345-
/O.NEW.KTSA.SV.W.0212.200523T0253Z-200523T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Tulsa OK
953 PM CDT Fri May 22 2020

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...
  West central Le Flore County in southeastern Oklahoma...

* Until 1045 PM CDT.

* At 953 PM CDT, a severe thunderstorm was located 7 miles southwest
  of Lequire, moving east at 25 mph.

  HAZARD...70 mph wind gusts and half dollar 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...
  Red Oak...                        Fanshawe...
  Lequire...                        

LAT...LON 3495 9524 3509 9523 3515 9481 3492 9479
TIME...MOT...LOC 0253Z 267DEG 22KT 3502 9517 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

2 follow-up statements

601 
WWUS54 KTSA 230316
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1016 PM CDT Fri May 22 2020

OKC061-077-079-230345-
/O.CON.KTSA.SV.W.0212.000000T0000Z-200523T0345Z/
Haskell OK-Latimer OK-Le Flore OK-
1016 PM CDT Fri May 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR SOUTHEASTERN HASKELL...NORTHEASTERN LATIMER AND WEST CENTRAL LE
FLORE COUNTIES...

At 1016 PM CDT, a severe thunderstorm was located 5 miles northeast
of Red Oak, moving east 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...
Red Oak...                        Fanshawe...
Lequire...                        

LAT...LON 3494 9514 3511 9512 3515 9481 3492 9479
TIME...MOT...LOC 0316Z 263DEG 24KT 3500 9501 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

741 
WWUS54 KTSA 230336
SVSTSA

Severe Weather Statement
National Weather Service Tulsa OK
1036 PM CDT Fri May 22 2020

OKC061-077-230346-
/O.CAN.KTSA.SV.W.0212.000000T0000Z-200523T0345Z/
Haskell OK-Latimer OK-
1036 PM CDT Fri May 22 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HASKELL AND
NORTHEASTERN LATIMER COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area therefore the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
southeastern Oklahoma.

LAT...LON 3494 9493 3509 9493 3515 9481 3492 9479
TIME...MOT...LOC 0336Z 260DEG 29KT 3502 9486 

$$

OKC079-230345-
/O.CON.KTSA.SV.W.0212.000000T0000Z-200523T0345Z/
Le Flore OK-
1036 PM CDT Fri May 22 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT
FOR WEST CENTRAL LE FLORE COUNTY...

At 1036 PM CDT, a severe thunderstorm was located 5 miles northeast
of Fanshawe, 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...
Fanshawe...                       

LAT...LON 3494 9493 3509 9493 3515 9481 3492 9479
TIME...MOT...LOC 0336Z 260DEG 29KT 3502 9486 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

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 May 22, 9:50 PM CDT, 3 minutes earlier.

Area forecast discussion, May 22, 9:50 PM CDT, 3 minutes before

Area Forecast Discussion
National Weather Service Tulsa OK
950 PM CDT Fri May 22 2020

.DISCUSSION...
Scattered strong to severe thunderstorms continue across parts of
southeast Oklahoma and west central Arkansas at this time. This
activity will continue into the overnight hours, with additional
storms moving into southeast Oklahoma from the west.

Have adjusted pops overnight based on current and expected trends,
with the rest of the forecast looking good at this time.

Update on the way.

&&

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

&&

SHORT TERM...23
LONG TERM....05

PLATE

Hazardous weather outlook, May 22, 9:13 PM CDT, 40 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
913 PM CDT Fri May 22 2020

ARZ001-002-010-011-019-020-029-OKZ049-053>076-231000-
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-
913 PM CDT Fri May 22 2020

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

.DAY ONE...Tonight.

TORNADO.
    RISK...Limited.
	AREA...South of Interstate 40.
    ONSET...Ongoing.

SEVERE THUNDERSTORM.
	RISK...Elevated.
    AREA...South of Interstate 40.
	ONSET...Ongoing.

FLASH FLOOD.
	RISK...Limited.
	AREA...Far Southeast Oklahoma.
	ONSET...This Evening.

HEAVY RAIN.
	RISK...Limited.
	AREA...Southeast Oklahoma.
	ONSET...This Evening.

DISCUSSION...
Strong to severe thunderstorms have developed across southeast
Oklahoma and west central Arkansas this evening. The strongest
storms will be capable of producing golf ball hail and isolated,
brief tornadoes.  Storms currently across north central Texas and
southwest Oklahoma may impact southeast Oklahoma with additional
chances for severe weather as they move east or northeast later
this evening and into the overnight hours. Large hail and damaging
winds will be the main severe weather threats.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
SATURDAY...Thunderstorm Potential.
SUNDAY...Severe Thunderstorm Potential.
MONDAY...Thunderstorm Potential...Heavy Rain Potential.
TUESDAY through THURSDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
An unsettled weather pattern will bring daily thunderstorm
chances, mainly from the latter part of the holiday weekend on
into the following week. While some severe weather will be
possible, flooding may become the main threat. Pockets of locally
heavy rainfall, falling on areas likely to have received previous
rounds of heavy rainfall, may begin to cause river flooding and
localized flash flooding by early next week.

weather.gov/tulsa contains additional information.

In the hours before

Local storm report, May 22, 8:37 PM CDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
837 PM CDT FRI MAY 22 2020

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

0832 PM     HAIL             1 S HEAVENER            34.87N 94.60W
05/22/2020  E1.75 INCH       LE FLORE           OK   TRAINED SPOTTER

&&

MAT

Local storm report, May 22, 8:40 PM CDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
840 PM CDT FRI MAY 22 2020

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

0835 PM     HAIL             HEAVENER                34.89N 94.60W
05/22/2020  E0.88 INCH       LE FLORE           OK   BROADCAST MEDIA

&&

MAT

Special weather statement, May 22, 8:40 PM CDT, 1 hour 13 minutes before

Special Weather Statement
National Weather Service Tulsa OK
840 PM CDT Fri May 22 2020

OKZ076-230215-
Le Flore OK-
840 PM CDT Fri May 22 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN LE FLORE COUNTY
UNTIL 915 PM CDT...

At 840 PM CDT, a strong thunderstorm was located over Bokoshe, moving
northeast at 20 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations in or near the path include...
Spiro...                          Panama...
Bokoshe...                        Shady Point...
Scullyville...                    Milton...

A Severe Thunderstorm Watch remains in effect until 200 AM CDT for
southeastern and east central Oklahoma.

LAT...LON 3510 9484 3520 9488 3521 9487 3520 9482
      3523 9481 3529 9465 3529 9463 3531 9461
      3533 9457 3531 9455 3515 9446
TIME...MOT...LOC 0140Z 246DEG 17KT 3516 9477

Local storm report, May 22, 9:04 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
904 PM CDT FRI MAY 22 2020

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

0856 PM     TORNADO          5 NE HEAVENER           34.94N 94.54W
05/22/2020                   LE FLORE           OK   TRAINED SPOTTER

&&

MAT

Local storm report, May 22, 9:32 PM CDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
932 PM CDT FRI MAY 22 2020

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

0917 PM     HAIL             HARTFORD                35.02N 94.38W
05/22/2020  E1.50 INCH       SEBASTIAN          AR   OTHER FEDERAL

            REPORT RECEIVED VIA MPING

&&

MAT

Local storm report, May 22, 9:37 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
937 PM CDT FRI MAY 22 2020

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

0933 PM     HAIL             MANSFIELD               35.06N 94.25W
05/22/2020  M1.75 INCH       SEBASTIAN          AR   TRAINED SPOTTER

&&

MAT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:11 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	49 min
May 22, 7:43 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	47 min
May 22, 8:00 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	45 min
May 22, 8:10 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	50 min
May 22, 8:26 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	49 min
May 22, 8:28 PM CDT	Tornado Warning	TSA	Latimer, Pittsburg	47 min
May 22, 8:40 PM CDT	Special Weather Statement	TSA	Sequoyah	35 min
May 22, 8:47 PM CDT	Tornado Warning	TSA	LeFlore	58 min
May 22, 8:58 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	25 min
May 22, 9:06 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	54 min
May 22, 9:10 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	50 min
May 22, 9:15 PM CDT	Tornado Warning	TSA	Latimer	45 min
May 22, 9:16 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pushmataha	44 min
May 22, 9:52 PM CDT	Tornado Warning	TSA	LeFlore	38 min
May 22, 9:56 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	49 min
May 22, 10:00 PM CDT	Special Weather Statement	TSA	McIntosh	30 min
May 22, 10:04 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Pittsburg	41 min
May 22, 10:10 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	50 min
May 22, 10:27 PM CDT	Tornado Warning	TSA	LeFlore	46 min
May 22, 10:37 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	53 min
May 22, 10:40 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Muskogee	50 min
May 22, 10:42 PM CDT	Flash Flood Warning	TSA	LeFlore	6 hr
May 22, 10:55 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	65 min
May 22, 11:10 PM CDT	Special Weather Statement	TSA	Latimer	35 min
May 22, 11:11 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, Pittsburg	49 min
May 22, 11:26 PM CDT	Tornado Warning	TSA	Haskell, Latimer, Pittsburg	49 min
May 22, 11:36 PM CDT	Flash Flood Warning	TSA	Haskell, Latimer, Pittsburg	3 hr
May 22, 11:41 PM CDT	Special Weather Statement	TSA	Sequoyah	49 min
May 22, 11:47 PM CDT	Special Weather Statement	TSA	Choctaw	43 min
May 23, 12:13 AM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore	47 min
May 23, 12:28 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	47 min
May 23, 1:01 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Pushmataha	44 min
May 23, 1:20 AM CDT	Special Weather Statement	TSA	Wagoner	25 min
May 23, 1:43 AM CDT	Special Weather Statement	TSA	Mayes	32 min
May 23, 1:43 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw	47 min
May 23, 1:52 AM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes	38 min
May 23, 1:55 AM CDT	Special Weather Statement	TSA	Wagoner	35 min
May 23, 2:28 AM CDT	Special Weather Statement	TSA	Wagoner	32 min
May 23, 2:54 AM CDT	Special Weather Statement	TSA	Rogers	36 min
May 23, 4:20 AM CDT	Special Weather Statement	TSA	Haskell, Latimer, LeFlore	55 min
May 23, 8:51 AM CDT	River Flood Warning	TSA	LeFlore	19 hr
May 23, 8:51 AM CDT	River Flood Warning	TSA	LeFlore	6 days

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2020 Every severe thunderstorm warning in 2020

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.