Alert archive / Arkansas / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 327

May 30, 200114 counties in Arkansas; 4 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at May 30, 2001, 7:30 AM CDT for 14 counties in Arkansas; 4 counties in Oklahoma. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 30, 2001, 7:30 AM CDT (12:30 UTC)
Expired
May 30, 2001, 11:00 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center

Counties Clark County, AR, Garland County, AR, Hempstead County, AR, Howard County, AR, Little River County, AR, Logan County, AR, Montgomery County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Yell County, AR, LeFlore County, OK, McCurtain County, OK, Pushmataha County, OK, Sequoyah County, OK

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 30, 8:58 AM CDTFlash Flood WarningTSACherokee, McIntosh, Muskogee, Okfuskee, Okmulgee, Sequoyah2 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 0.5 hours before the alert went out and 255 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, Shreveport, LA at 12:00Z on 2001-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1253 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, Shreveport, LA at 12:00Z on 2001-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -18 square meters per square second.193958Sfc1 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
1253 J/kg
Mixed-layer CIN
-224 J/kg
Mixed-layer LCL
660 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-18 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 12:30 AM CDTSevere Thunderstorm WatchSPCBenton, Washington5 hr
May 30, 4:00 PM CDTTornado WatchSPCClark, Garland, Hempstead, Howard, Little River, Montgomery and 5 more5 hr
May 29, 7:30 PM CDTTornado WatchSPCBeaver, Beckham, Comanche, Cotton, Custer, Dewey and 12 more6 hr
May 29, 10:30 PM CDTTornado WatchSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 30 more6 hr
May 30, 1:00 AM CDTTornado WatchSPCBeckham, Comanche, Cotton, Greer, Harmon, Jackson and 3 more3 hr
May 30, 4:00 AM CDTSevere Thunderstorm WatchSPCAtoka, Bryan, Caddo, Carter, Choctaw, Cleveland and 20 more4 hr
May 30, 3:00 PM CDTSevere Thunderstorm WatchSPCCimarron5 hr

Nearby

Severe Thunderstorm Watches in Arkansas, 2001Severe Thunderstorm Watches in Oklahoma, 2001Every severe thunderstorm watch in 2001

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.