Alert archive / Arkansas / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 268

May 8, 199714 counties in Arkansas; 13 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at May 8, 1997, 1:45 AM CDT for 14 counties in Arkansas; 13 counties in Oklahoma. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 8, 1997, 1:45 AM CDT (06:45 UTC)
Expired
May 8, 1997, 7:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 27 counties

Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Cherokee County, OK, Coal County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Pittsburg County, OK, Sequoyah County, OK, Wagoner County, OK

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 8, 2:09 AM CDTSevere Thunderstorm WarningTSAAdair, Cherokee51 min
May 8, 2:42 AM CDTSevere Thunderstorm WarningTSACrawford, Washington48 min

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.8 hours before the alert went out and 205 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 1997-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1997-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 386 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
954 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
386 m²/s²
0-3 km storm-relative helicity
597 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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 7, 10:00 PM CDTTornado WatchSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 30 more6 hr
May 8, 3:30 PM CDTSevere Thunderstorm WatchSPCCaddo, Carter, Cleveland, Coal, Comanche, Cotton and 18 more7 hr

Nearby

Severe Thunderstorm Watches in Arkansas, 1997Severe Thunderstorm Watches in Oklahoma, 1997Every severe thunderstorm watch in 1997

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.