Alert archive / Arkansas / Special Weather Statements in 2021
Special Weather Statement, NWS Tulsa, OK
NWS Tulsa, OK issued this special weather statement at Apr 7, 2021, 6:34 AM CDT for Benton County, Arkansas. It was in force for 26 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 7, 2021, 6:34 AM CDT (11:34 UTC)
- Expired
- Apr 7, 2021, 7:00 AM CDT
- In force
- 26 min
- Issued by
- NWS Tulsa, OK
County Benton County, AR
The radar
The Western Arkansas radar (KSRX), 112 km from the middle of the area, began a volume at 11:39 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 74 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
- 126 J/kg
- Mixed-layer CIN
- -229 J/kg
- Mixed-layer LCL
- 1491 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- 125 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 Apr 7, 6:22 AM CDT, 12 minutes earlier.
Area forecast discussion, Apr 7, 6:22 AM CDT, 12 minutes before
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</html>Hazardous weather outlook, Apr 7, 4:38 AM CDT, 1 hour 56 minutes before
Hazardous Weather Outlook
National Weather Service Tulsa OK
438 AM CDT Wed Apr 7 2021
ARZ001-002-010-011-019-020-029-OKZ049-053>076-080945-
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-
438 AM CDT Wed Apr 7 2021
This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.
.DAY ONE...Today and Tonight.
TORNADO.
RISK...Limited.
AREA...Western Arkansas.
ONSET...Early Afternoon.
SEVERE THUNDERSTORM.
RISK...Elevated.
AREA...Far Eastern Oklahoma and Western Arkansas.
ONSET...Late Morning.
SIGNIFICANT WINDS.
RISK...Limited.
AREA...Eastern Oklahoma and Western Arkansas.
ONSET...Ongoing.
FIRE WEATHER DANGER.
RISK...Elevated.
AREA...Eastern Oklahoma.
ONSET...Early Afternoon.
DISCUSSION...
Showers and thunderstorms are expected to expand through the
morning and into the afternoon along a cold front moving eastward
across the area. Ahead of the front, instability and shear
parameters both favor an isolated severe weather threat this
morning, but the greater threat should hold off until late morning
and early afternoon in far eastern Oklahoma and western Arkansas.
Large hail and damaging winds will be the primary threats, but a
very limited tornado threat also exists, mainly in western
Arkansas. All thunderstorm activity should be east of the area
late this afternoon.
In addition to the severe weather threat, fire weather concerns
will also increase across eastern Oklahoma this afternoon.
Southerly winds gusting to 35 mph this morning will shift to a
westerly direction behind the front, and low level moisture will
decrease substantially. The worst conditions will be found across
southeast Oklahoma, where minimum humidities near 25 percent are
expected. Winds will remain gusty through the night, which will
keep some fire weather threat past sunset.
SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Possible.
.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.
THURSDAY...Very High Fire Weather Potential...High Wind Potential.
FRIDAY...Severe Thunderstorm Potential.
SATURDAY...No Hazards.
SUNDAY...Thunderstorm Potential...Very High Fire Weather Potential.
MONDAY...Thunderstorm Potential...Very High Fire Weather Potential...
High Wind Potential.
TUESDAY...No Hazards.
EXTENDED DISCUSSION...
Westerly winds will remain gusty on Thursday and with low
humidities expected areawide, will lead to another day of
increased fire spread concerns.
Thunderstorm chances increase Friday afternoon and into Friday
night, as moisture will return to the area fairly quickly ahead of
a fast moving storm system. Severe thunderstorms will be possible
during the afternoon and evening, with parts of southeast Oklahoma
most susceptible.
After a dry Saturday and Sunday, another storm system will bring
showers and thunderstorms to the region Sunday night into Monday,
as well as gusty winds and a resultant increase in the fire
spread threat.
weather.gov/tulsa contains additional information.In the hours before
Special weather statement, Apr 7, 3:13 AM CDT, 3 hours 21 minutes before
Special Weather Statement
National Weather Service Tulsa OK
313 AM CDT Wed Apr 7 2021
OKZ074-075-070845-
Haskell OK-Latimer OK-
313 AM CDT Wed Apr 7 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL HASKELL AND
NORTHERN LATIMER COUNTIES UNTIL 345 AM CDT...
At 313 AM CDT, a strong thunderstorm was located 3 miles east of
Wilburton, moving northeast at 30 mph.
Winds in excess of 40 mph will be possible with this storm.
Locations in or near the path include...
Wilburton... Red Oak...
Damon... Lequire...
Panola...
LAT...LON 3493 9539 3519 9503 3507 9493 3494 9493
3494 9500 3490 9500 3478 9526
TIME...MOT...LOC 0813Z 234DEG 26KT 3490 9525
LacySpecial weather statement, Apr 7, 5:36 AM CDT, 58 minutes before
Special Weather Statement National Weather Service Tulsa OK 536 AM CDT Wed Apr 7 2021 OKZ063-068-069-071100- Adair OK-Cherokee OK-Delaware OK- 536 AM CDT Wed Apr 7 2021 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DELAWARE... NORTHWESTERN ADAIR AND NORTHERN CHEROKEE COUNTIES UNTIL 600 AM CDT... At 536 AM CDT, a strong thunderstorm was located 7 miles east of Peggs, moving northeast at 55 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations in or near the path include... Tahlequah... West Siloam Springs... Colcord... Kansas... Hulbert... Watts... Oaks... Peggs... Leach... Scraper... Twin Oaks... Ballard... Lost City... Natural Falls State Park... LAT...LON 3583 9508 3601 9520 3643 9461 3607 9456 TIME...MOT...LOC 1036Z 234DEG 49KT 3605 9498 Lacy
Special weather statement, Apr 7, 5:51 AM CDT, 43 minutes before
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</html>The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 3:13 AM CDT | Special Weather Statement | TSA | Latimer | 32 min |
| Apr 7, 5:36 AM CDT | Special Weather Statement | TSA | Cherokee | 24 min |
| Apr 7, 5:51 AM CDT | Special Weather Statement | TSA | Adair | 24 min |
| Apr 7, 6:10 AM CDT | Special Weather Statement | TSA | Benton | 35 min |
| Apr 7, 1:15 PM CDT | Special Weather Statement | TSA | Sebastian | 30 min |
Nearby
Special Weather Statements in Arkansas, 2021Every 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.