Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Tulsa, OK

March 17, 2021Adair County, Oklahoma; 5 counties in Arkansas

NWS Tulsa, OK issued this special weather statement at Mar 17, 2021, 6:33 AM CDT for Adair County, Oklahoma; 5 counties in Arkansas. It was in force for 42 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: Mar 17, 2021, 6:33 AM CDT (11:33 UTC)
Expired: Mar 17, 2021, 7:15 AM CDT
In force: 42 min
Issued by: NWS Tulsa, OK

Counties Benton County, AR, Crawford County, AR, Franklin County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK

The radar

The Western Arkansas radar (KSRX), 32 km from the middle of the area, began a volume at 11:33 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 11.6 hours before the alert went out and 157 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: 2158 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 312 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 17, 6:25 AM CDT, 8 minutes earlier.

Area forecast discussion, Mar 17, 6:25 AM CDT, 8 minutes before

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Hazardous weather outlook, Mar 17, 4:51 AM CDT, 1 hour 42 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
451 AM CDT Wed Mar 17 2021

ARZ001-002-010-011-019-020-029-OKZ049-053>076-181000-
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-
451 AM CDT Wed Mar 17 2021

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

.DAY ONE...Today and Tonight.

TORNADO.
	RISK...Elevated.
	AREA...Eastern Oklahoma and northwest Arkansas.
	ONSET...Ongoing.

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

HEAVY RAIN.
	RISK...Limited.
	AREA...Eastern Oklahoma and northwest Arkansas.
	ONSET...Ongoing.

SIGNIFICANT WINDS.
	RISK...Limited.
	AREA...Eastern Oklahoma and northwest Arkansas.
	ONSET...Late afternoon through tonight.

FIRE WEATHER DANGER.
	RISK...Elevated.
	AREA...Mainly southeast Oklahoma.
	ONSET...This afternoon.

DISCUSSION...
Strong to severe thunderstorms are ongoing early this morning
across northeast Oklahoma, with damaging winds and large hail
being the main threat. Additional strong to severe storms will
likely move into parts of southeast Oklahoma early this morning,
with the activity eventually shifting into northwest Arkansas.
While damaging winds and large hail will be the primary severe
weather threat, forecast wind shear will be supportive of a
tornado or two.

The upper level system will track across northeast Oklahoma
during the afternoon, with scattered showers and a few
thunderstorms possible. A brief tornado or landspout could
occur beneath the upper system.

Gusty northwest winds will develop later this afternoon and
persist into the overnight hours.

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

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
THURSDAY...Very High Fire Weather Potential...High Wind Potential.
FRIDAY and SATURDAY...No Hazards.
SUNDAY...Very High Fire Weather Potential...High Wind Potential.
MONDAY...Thunderstorm Potential...High Wind Potential...Heavy Rain
Potential.
TUESDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
Breezy northwest winds are forecast for Thursday behind the low
pressure system. The strong winds and drier air will elevate
fire weather concerns although much cooler weather and some
light rain across parts of northeast Oklahoma and northwest
Arkansas will temper the threat however.

Strong south winds will raise fire weather concerns Sunday. A
cold front will bring the next chance for rain and storms by
Monday into Tuesday. Some locally heavy rainfall will be possible
with this system.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Mar 17, 5:24 AM CDT, 1 hour 9 minutes before

Special Weather Statement
National Weather Service Tulsa OK
524 AM CDT Wed Mar 17 2021

OKZ054-059-060-064-171100-
Tulsa OK-Osage OK-Pawnee OK-Creek OK-
524 AM CDT Wed Mar 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OSAGE...NORTHWESTERN
CREEK...SOUTHEASTERN PAWNEE AND WEST CENTRAL TULSA COUNTIES UNTIL 600
AM CDT...

At 524 AM CDT, strong thunderstorms were located along a line
extending from 3 miles northeast of Cleveland to 2 miles south of
Terlton to 5 miles northwest of Drumright. Movement was northeast at
30 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations in or near the path include...
Hominy...                         Cleveland...
Mannford...                       Drumright...
Oilton...                         Jennings...
Westport...                       Osage...
Hallett...                        Terlton...
Keystone State Park...            Walnut Creek State Park...
Silver City...

A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
northeastern Oklahoma.

LAT...LON 3623 9667 3639 9653 3651 9610 3603 9619
      3598 9662 3616 9662 3616 9671
TIME...MOT...LOC 1024Z 243DEG 27KT 3636 9643 3615 9650 3604 9666

Special weather statement, Mar 17, 5:27 AM CDT, 1 hour 6 minutes before

Special Weather Statement
National Weather Service Tulsa OK
527 AM CDT Wed Mar 17 2021

OKZ057-058-062-063-067>070-072-074>076-171100-
Haskell OK-Adair OK-Muskogee OK-Latimer OK-Craig OK-Sequoyah OK-
Cherokee OK-Delaware OK-Ottawa OK-Le Flore OK-Mayes OK-Wagoner OK-
527 AM CDT Wed Mar 17 2021

...SIGNIFICANT WEATHER ADVISORY FOR CRAIG...DELAWARE...OTTAWA...
HASKELL...SEQUOYAH...MAYES...NORTHEASTERN LATIMER...ADAIR...NORTHERN
LE FLORE...SOUTHEASTERN WAGONER...CHEROKEE AND EASTERN MUSKOGEE
COUNTIES UNTIL 600 AM CDT...

At 526 AM CDT, scattered strong thunderstorms were located along a
line extending from 3 miles south of Chetopa to 2 miles northeast of
Wilburton. Movement was east at 35 mph.

Winds in excess of 40 mph will be possible with these storms.

Locations in or near the path include...
Muskogee...                       Tahlequah...
Siloam Springs...                 Miami...
Sallisaw...                       Poteau...
Vinita...                         Baxter Springs...
Stilwell...                       Wilburton...
Stigler...                        Jay...
Pryor Creek...                    Grove...
Fort Gibson...                    Pocola...
Muldrow...                        Heavener...
Roland...                         Commerce...

This includes the following highways,
 Interstate 40 in Oklahoma between mile markers 276 and 326.
 Interstate 44 between mile markers 270 and 324.

A Severe Thunderstorm Watch remains in effect until 800 AM CDT for
northeastern Oklahoma.

LAT...LON 3650 9462 3571 9448 3486 9445 3487 9534
      3695 9530 3700 9508 3700 9462
TIME...MOT...LOC 1026Z 267DEG 32KT 3698 9508 3495 9527

Special weather statement, Mar 17, 5:54 AM CDT, 39 minutes before

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Special weather statement, Mar 17, 5:57 AM CDT, 36 minutes before

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Special weather statement, Mar 17, 6:15 AM CDT, 18 minutes before

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Special weather statement, Mar 17, 6:33 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 17, 1:25 AM CDT	Special Weather Statement	TSA	LeFlore	35 min
Mar 17, 1:33 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	42 min
Mar 17, 2:04 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	41 min
Mar 17, 2:44 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	46 min
Mar 17, 3:28 AM CDT	Severe Thunderstorm Warning	TSA	Osage	47 min
Mar 17, 3:46 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	44 min
Mar 17, 4:19 AM CDT	Special Weather Statement	TSA	Nowata, Washington	26 min
Mar 17, 4:22 AM CDT	Areal Flood Advisory	TSA	Osage, Pawnee	3 hr
Mar 17, 4:25 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Pawnee, Washington	50 min
Mar 17, 4:37 AM CDT	Special Weather Statement	TSA	Pawnee	53 min
Mar 17, 4:52 AM CDT	Special Weather Statement	TSA	Cherokee, Craig, Delaware, McIntosh, Mayes, Muskogee and 4 more	38 min
Mar 17, 5:13 AM CDT	Special Weather Statement	TSA	Nowata, Washington	47 min
Mar 17, 5:14 AM CDT	Special Weather Statement	TSA	Nowata, Washington	46 min
Mar 17, 5:24 AM CDT	Special Weather Statement	TSA	Pawnee	36 min
Mar 17, 5:27 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 4 more	33 min
Mar 17, 5:54 AM CDT	Special Weather Statement	TSA	Craig, Creek, Nowata, Ottawa, Rogers, Tulsa	51 min
Mar 17, 5:57 AM CDT	Special Weather Statement	TSA	Adair, Cherokee, Delaware, Haskell, LeFlore, Sequoyah	48 min
Mar 17, 6:15 AM CDT	Special Weather Statement	TSA	Choctaw	45 min
Mar 17, 6:46 AM CDT	Special Weather Statement	TSA	Ottawa	29 min
Mar 17, 1:42 PM CDT	Special Weather Statement	TSA	Tulsa	33 min
Mar 17, 1:46 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Tulsa, Wagoner	44 min
Mar 17, 1:54 PM CDT	Special Weather Statement	TSA	Delaware	36 min
Mar 17, 1:58 PM CDT	Tornado Warning	TSA	Creek	32 min
Mar 17, 2:13 PM CDT	Wind Advisory	TSA	Craig, Creek, Nowata, Okfuskee, Okmulgee, Pawnee and 3 more	7 hr
Mar 17, 2:17 PM CDT	Tornado Warning	TSA	Rogers, Wagoner	28 min
Mar 17, 2:28 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Tulsa	47 min
Mar 17, 2:32 PM CDT	Special Weather Statement	TSA	Delaware	43 min
Mar 17, 3:11 PM CDT	Special Weather Statement	TSA	Rogers	34 min
Mar 17, 3:14 PM CDT	Special Weather Statement	TSA	Nowata	31 min
Mar 17, 3:16 PM CDT	Special Weather Statement	TSA	Delaware	29 min
Mar 17, 3:16 PM CDT	Special Weather Statement	TSA	Delaware	29 min
Mar 17, 3:23 PM CDT	Special Weather Statement	TSA	Craig	37 min
Mar 17, 3:31 PM CDT	Special Weather Statement	TSA	Washington	29 min
Mar 17, 3:51 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	10 min
Mar 17, 4:14 PM CDT	Special Weather Statement	TSA	Ottawa	31 min
Mar 17, 4:58 PM CDT	Special Weather Statement	TSA	Delaware	32 min
Mar 17, 1:52 AM CDT	Special Weather Statement	TSA	Sebastian	23 min
Mar 17, 2:37 AM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	38 min
Mar 17, 3:14 AM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	33 min
Mar 17, 3:10 PM CDT	Special Weather Statement	TSA	Washington	35 min
Mar 17, 3:31 PM CDT	Severe Thunderstorm Warning	TSA	Benton	13 min
Mar 17, 4:02 PM CDT	Special Weather Statement	TSA	Benton	28 min
Mar 17, 4:09 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Washington	13 min
Mar 17, 4:40 PM CDT	Special Weather Statement	TSA	Benton	35 min
Mar 17, 4:48 PM CDT	Severe Thunderstorm Warning	TSA	Benton	27 min
Mar 17, 5:23 PM CDT	Special Weather Statement	TSA	Benton	37 min

Nearby

Special Weather Statements in Arkansas, 2021 Special Weather Statements in Oklahoma, 2021 Every special weather statement 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.