Alert archive / Arkansas / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 30, NWS Tulsa, OK

March 21, 1991Johnson County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Mar 21, 1991, 9:25 PM CST for Johnson County, Arkansas. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Mar 21, 1991, 9:25 PM CST (03:25 UTC)
Expired: Mar 21, 1991, 10:30 PM CST
In force: 65 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Johnson County, AR

The nearest sounding before it

Springfield, MO (KUMN), launched 00:00Z, 3.4 hours before the alert went out and 151 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: 1100 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1075 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 317 m²/s²
Significant tornado parameter: 1.9
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Local storm report, Mar 21, 6:04 PM CST, 3 hours 21 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
552 PM CST THU MAR 21 1991

TIME/CST   COUNTY      EVENT

210 PM   PITTSBURG   ONE INCH SIZE HAIL 1 MILE WEST OF ARPELAR
210 PM   CREEK       QUARTER SIZE HAIL AT BRISTOW
220 PM   OKFUSKEE    3/4 INCH SIZE HAIL 2 MILES SOUTH OF WELEEKA
228 PM   CREEK       1 1/2 INCH SIZE HAIL AT KIEFER
230 PM   OKMULGEE    3/4 INCH SIZE HAIL 2 MILES EAST OF HENRYETTA
240 PM   PITTSBURG   BASEBALL SIZE HAIL AT INDIANOLA
245 PM   PITTSBURG   GOLFBALL SIZE HAIL AT CANADIAN
250 PM   TULSA       DIME SIZE HAIL 3 MILES WEST BIXBY
255 PM   MCINTOSH    HAIL THE SIZE OF NICKLES FELL AT EUFAULA
255 PM   TULSA       DIME SIZE HAIL IN SOUTH TULSA
320 PM   MUSKOGEE    GOL:FBALL SIZE HAIL 2 MILES EAST OF WARNER
330 PM   ROGERS      3/4 INCH SIZE HJAIL 2 MILES NORTH OF INOLA
355 PM   CREEK       DIME SIZE HAIL 5 MILES SOUTH BRISTOW
415 PM   ADAIR       DIME SIZE HAIL 6 MILES SOUTH STILWELL

Local storm report, Mar 21, 6:10 PM CST, 3 hours 15 minutes before

STORM REPORT
NATIONAL WEATHER SERVICE TULSA, OK
604 PM CST THU MAR 21 1991

TIME/CST   COUNTY      EVENT

430 PM   MCINTOSH    NICKLE SIZE TO QUARTER SIZE HAIL BROKE OUT
                     WINDOWS IN SEVERAL MOBLE HOMES 5 MILES NORTH
                     OF EUFAULA.
430 PM   MCINTOSH    QUARTER SIZE HAIL AT EUFAULA.
435 PM   MUSKOGEE    1 INCH SIZE HAIL 3 MILES EAST OF FORT GIBSON
455 PM   CHEROKEE    HALF DOLLAR SIZE HAIL AT TAHLEQUAH
515 PM   eADAIR       DIME SIZE HAIL 2 MILES NORTH OF WATTS ON
                     HIGHWAY 59.

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 21, 6:57 PM CST	Severe Thunderstorm Warning	TSA	Haskell, Muskogee	48 min
Mar 21, 7:07 PM CST	Tornado Warning	TSA	LeFlore	68 min
Mar 21, 7:09 PM CST	Tornado Warning	TSA	Haskell	36 min
Mar 21, 7:33 PM CST	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	57 min
Mar 21, 7:44 PM CST	Severe Thunderstorm Warning	TSA	LeFlore	61 min
Mar 21, 8:45 PM CST	Severe Thunderstorm Warning	TSA	LeFlore	60 min
Mar 21, 11:36 PM CST	Severe Thunderstorm Warning	TSA	Pittsburg	54 min
Mar 22, 12:20 AM CST	Severe Thunderstorm Warning	TSA	Sequoyah	55 min
Mar 22, 1:12 AM CST	Severe Thunderstorm Warning	TSA	LeFlore	63 min
Mar 22, 1:28 AM CST	Severe Thunderstorm Warning	TSA	Sequoyah	32 min
Mar 22, 3:23 AM CST	Severe Thunderstorm Warning	TSA	Pittsburg	52 min
Mar 22, 7:35 AM CST	Severe Thunderstorm Warning	TSA	Latimer	40 min
Mar 22, 7:57 AM CST	Severe Thunderstorm Warning	TSA	Haskell	48 min
Mar 22, 8:12 AM CST	Severe Thunderstorm Warning	TSA	LeFlore	56 min
Mar 21, 6:47 PM CST	Severe Thunderstorm Warning	TSA	Washington	58 min
Mar 21, 8:06 PM CST	Severe Thunderstorm Warning	TSA	Scott, Sebastian	69 min
Mar 21, 8:26 PM CST	Severe Thunderstorm Warning	TSA	Crawford	64 min
Mar 21, 8:47 PM CST	Severe Thunderstorm Warning	TSA	Franklin	58 min
Mar 21, 9:03 PM CST	Severe Thunderstorm Warning	TSA	Logan, Polk, Scott, Sebastian	57 min
Mar 21, 9:58 PM CST	Severe Thunderstorm Warning	TSA	Johnson, Logan	62 min
Mar 21, 9:58 PM CST	Severe Thunderstorm Warning	TSA	Polk, Scott	62 min
Mar 22, 12:57 AM CST	Severe Thunderstorm Warning	TSA	Crawford, Washington	63 min
Mar 22, 8:07 AM CST	Severe Thunderstorm Warning	TSA	Washington	61 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1991 Every severe thunderstorm warning in 1991

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.