Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Tulsa, OK

April 29, 2021Franklin County, Arkansas

NWS Tulsa, OK issued this special weather statement at Apr 29, 2021, 2:13 AM CDT for Franklin County, Arkansas. It was in force for 32 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 29, 2021, 2:13 AM CDT (07:13 UTC)
Expired: Apr 29, 2021, 2:45 AM CDT
In force: 32 min
Issued by: NWS Tulsa, OK

County Franklin County, AR

The radar

The Western Arkansas radar (KSRX), 43 km from the middle of the area, began a volume at 07:13 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, 7.2 hours before the alert went out and 171 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: 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

Open this sounding in Storm Lab

The text

As transmitted.

194 
WWUS84 KTSA 290713
SPSTSA

Special Weather Statement
National Weather Service Tulsa OK
213 AM CDT Thu Apr 29 2021
 
ARZ019-020-029-290745-
Sebastian AR-Franklin AR-Crawford AR-
213 AM CDT Thu Apr 29 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FRANKLIN...
SOUTHEASTERN CRAWFORD AND NORTHERN SEBASTIAN COUNTIES UNTIL 245 AM
CDT...

At 213 AM CDT, a strong thunderstorm was located 3 miles southwest of
Lavaca, moving northeast at 50 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations in or near the path include...
Fort Smith...                     Ozark...
Charleston...                     Greenwood...
Barling...                        Lavaca...
Branch...                         Ratcliff...
Bloomer...                        Fort Smith Regional Airport...
Central City...                   Caulksville...
Etna...                           Meg...
Peter Pender...                   Vesta...
Cecil...                          Ursula...

This includes Interstate 40 in Arkansas between mile markers 30 and
33.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3539 9381 3532 9381 3531 9383 3532 9392
      3529 9392 3521 9428 3534 9437 3555 9388
      3542 9380 3541 9381 3541 9380 3540 9381
      3540 9379
TIME...MOT...LOC 0713Z 240DEG 49KT 3531 9423 

$$

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, 8:25 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, Latimer, LeFlore	50 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
Apr 28, 7:22 PM CDT	Special Weather Statement	TSA	Franklin	23 min
Apr 28, 7:34 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	26 min
Apr 28, 7:42 PM CDT	Areal Flood Warning	TSA	Benton, Carroll, Crawford, Franklin, Madison, Washington	9 hr
Apr 28, 9:27 PM CDT	Severe Thunderstorm Warning	TSA	Franklin, Sebastian	48 min
Apr 28, 9:29 PM CDT	Tornado Warning Considerable damage threat	TSA	Sebastian	28 min
Apr 29, 11:36 AM CDT	River Flood Warning	TSA	Crawford, Franklin	9 hr

Nearby

Special Weather Statements in Arkansas, 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.