Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 308, NWS Tulsa, OK

May 22, 1999Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 22, 1999, 7:29 PM CDT for Sebastian County, Arkansas. It was in force for 46 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 22, 1999, 7:29 PM CDT (00:29 UTC)
Expired
May 22, 1999, 8:15 PM CDT
In force
46 min
Issued by
NWS Tulsa, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Sebastian County, AR

What was reported inside it

TimeReportWhereRemark
May 22, 7:32 PM CDTHail 0.75Mansfield, AR

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.5 hours before the alert went out and 194 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 1999-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 189 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 1999-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
189 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
1465 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 22, 2:35 PM CDT, 4 hours 54 minutes earlier.

Area forecast discussion, May 22, 2:35 PM CDT, 4 hours 54 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
235 PM CDT SAT MAY 22 1999

NO DISCUSSION WILL BE WRITTEN THIS AFTERNOON DUE TO SEVERE WEATHER.

FCSTID = 11

.TUL...
AR...NONE.
OK...NONE.

In the hours before

Local storm report, May 22, 6:05 PM CDT, 1 hour 24 minutes before
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Local storm report, May 22, 6:05 PM CDT, 1 hour 24 minutes before
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Local storm report, May 22, 6:50 PM CDT, 39 minutes before
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Local storm report, May 22, 6:50 PM CDT, 39 minutes before
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Local storm report, May 22, 7:21 PM CDT, 8 minutes before
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Local storm report, May 22, 7:21 PM CDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 7:13 PM CDTSevere Thunderstorm WarningTSAOkmulgee47 min
May 22, 7:21 PM CDTSevere Thunderstorm WarningTSAOkfuskee39 min
May 22, 7:36 PM CDTSevere Thunderstorm WarningTSAMuskogee39 min
May 22, 7:40 PM CDTSevere Thunderstorm WarningTSASequoyah50 min
May 22, 7:49 PM CDTSevere Thunderstorm WarningTSALeFlore41 min
May 22, 7:56 PM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee49 min
May 22, 8:46 PM CDTSevere Thunderstorm WarningTSALeFlore44 min
May 22, 9:23 PM CDTSevere Thunderstorm WarningTSALeFlore52 min
May 23, 1:45 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee45 min
May 23, 1:45 AM CDTSevere Thunderstorm WarningTSANowata, Rogers, Washington45 min
May 23, 1:45 AM CDTSevere Thunderstorm WarningTSACraig45 min
May 23, 1:58 AM CDTSevere Thunderstorm WarningTSAOttawa47 min
May 23, 2:30 AM CDTSevere Thunderstorm WarningTSADelaware, Mayes, Ottawa60 min
May 23, 2:30 AM CDTSevere Thunderstorm WarningTSACreek, Osage, Pawnee, Tulsa60 min
May 23, 2:30 AM CDTSevere Thunderstorm WarningTSARogers, Wagoner60 min
May 23, 3:35 AM CDTSevere Thunderstorm WarningTSACreek, Okfuskee, Okmulgee55 min
May 23, 3:35 AM CDTSevere Thunderstorm WarningTSAMuskogee, Tulsa, Wagoner55 min
May 23, 3:58 AM CDTFlash Flood WarningTSAMuskogee, Okmulgee, Wagoner2 hr
May 23, 3:58 AM CDTFlash Flood WarningTSACherokee2 hr
May 23, 4:17 AM CDTSevere Thunderstorm WarningTSAMcIntosh43 min
May 23, 3:05 AM CDTSevere Thunderstorm WarningTSABenton, Carroll, Madison40 min
May 23, 3:05 AM CDTSevere Thunderstorm WarningTSAWashington40 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.