Alert archive / Arkansas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 137, NWS Tulsa, OK

September 30, 1986Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Sep 30, 1986, 2:40 PM CDT for Washington County, Arkansas. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Sep 30, 1986, 2:40 PM CDT (19:40 UTC)
Expired
Sep 30, 1986, 3:45 PM CDT
In force
65 min
Issued by
NWS Tulsa, OK
Area
Whole counties

County Washington County, AR

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Springfield, MO (KUMN), launched 12:00Z, 7.7 hours before the alert went out and 109 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 12:00Z on 1986-09-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 12:00Z on 1986-09-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -59 square meters per square second.19395878Sfc1 km3 km6 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
613 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
-59 m²/s²
0-3 km storm-relative helicity
285 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 29, 10:23 PM CDTSevere Thunderstorm WarningTSAOsage67 min
Sep 30, 12:37 AM CDTSevere Thunderstorm WarningTSACreek, Okfuskee68 min
Sep 30, 3:44 PM CDTTornado WarningTSACherokee, Delaware28 min
Sep 30, 4:29 PM CDTSevere Thunderstorm WarningTSABenton, Washington61 min
Sep 30, 4:29 PM CDTSevere Thunderstorm WarningTSACrawford61 min
Sep 30, 5:14 PM CDTSevere Thunderstorm WarningTSAFranklin, Madison1 min
Sep 30, 5:45 PM CDTSevere Thunderstorm WarningTSAJohnson30 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1986Every severe thunderstorm warning in 1986

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.