Alert archive / Arkansas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 49, NWS Shreveport, LA

April 4, 1986Nevada County, Arkansas

NWS Shreveport, LA issued this severe thunderstorm warning at Apr 4, 1986, 9:20 PM CST for Nevada County, Arkansas. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Apr 4, 1986, 9:20 PM CST (03:20 UTC)
Expired
Apr 4, 1986, 10:25 PM CST
In force
65 min
Issued by
NWS Shreveport, LA
Area
Whole counties

County Nevada 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

Longview/Gregg, TX (KGGG), launched 00:00Z, 3.3 hours before the alert went out and 189 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, Longview/Gregg, TX at 00:00Z on 1986-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2157 joules per kilogram.LCLEL10008507005003002001001 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, Longview/Gregg, TX at 00:00Z on 1986-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
2157 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1179 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.7

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.

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

Special weather statement, Apr 4, 4:13 PM CST, 5 hours 7 minutes before
NEWSPSSHV
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
410 PM CST FRI APR 4 1986

A TORNADO WATCH REMAINS IN EFFECT  FOR A LARGE AREA INCLUDING SOUTH
EAST OKLAHOMA..WEST CENTRAL AND SOUTHWEST ARKANSAS AND MUCH OF NORTH
CENTRAL AND NORTHEAST TEXAS.

OVER THE PAST HOUR SMALL HAIL REPORTED IN STRONG THUNDERSTORM NORTH OF
NASHVILLE ARKANSAS...BRIEF HEAVY RAINFALL AND GUSTY WINDS WITH THUNDER
STORMS OVER SOUTHWEST ARKANAS AND EXTREME NORTHEAST TEXAS AND EXTREME
SOUTHEAST OKLAHOMA.

ISOLATED STRONG THUNDERSTORMS WERE OCCURRING OVER SOUTHWEST ARKANSAS
AND EXTEME NORTHEAST TEXAS FROM SOUTHWEST OF HOT SPRINGS TO NORTH OF
NASSVILLE TO NEAR DEKALB TEXAS. MOVMENT WAS NORTHEAST AT 30 MPH.

THESE STORMS WERE AHEAD OF A BAND OF VERY STRONG THUNDERSTORMS THAT
WERE SPREADING EAST ACROSS NORTH TEXAS AND SOUTHEAST OKLAHONA. THE
BAND WAS LOCATED AT 410 PM FROM 40 MILEA NORTH OF IDABEL OKLAHOMA TO
SOUTHWEST OF HUGO TO NEAR DALLAS TEXAS.

AREAL COVERAGE OF STRONG THUNDERSTORMS WILL CONTINUE TO INCREASE OVER
THE NORTHWEST HALF OF THE ARKLATEX THIS EVENING INTO THE SOUTHEAST PART
OF OKLAHOMA..A FEW SEVERE STORMS ARE LIKELY.

ALSO...ADDITIONAL HEAVY RAINFALL WmILL OCCUR TONIGHT OVER THE SAME AREA
WHERE TWO TO OVER FIVE INCHES FELL THURSDAY NIGHT...THUS FLOODING MAY
DEVELOP LATER THIS EVENING..AS AREA STREAMS ARE NOW RUNNING HIGH.

The office that day

Everything else NWS Shreveport, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 4, 6:25 PM CSTTornado WarningSHVHempstead65 min
Apr 4, 7:10 PM CSTTornado WarningSHVLafayette, Miller60 min
Apr 4, 7:10 PM CSTTornado WarningSHVNevada60 min
Apr 4, 7:30 PM CSTSevere Thunderstorm WarningSHVLittle River70 min
Apr 4, 7:30 PM CSTSevere Thunderstorm WarningSHVHempstead70 min
Apr 4, 7:50 PM CSTTornado WarningSHVNevada60 min
Apr 4, 8:10 PM CSTSevere Thunderstorm WarningSHVLafayette, Miller80 min
Apr 4, 8:10 PM CSTSevere Thunderstorm WarningSHVColumbia, Nevada80 min
Apr 4, 8:30 PM CSTSevere Thunderstorm WarningSHVHempstead, Howard, Pike60 min
Apr 4, 9:20 PM CSTSevere Thunderstorm WarningSHVHempstead, Howard, Little River65 min
Apr 4, 9:50 PM CSTSevere Thunderstorm WarningSHVSevier65 min
Apr 5, 2:25 AM CSTFlash Flood WarningSHVHempstead, Howard, Little River, Sevier3 hr
Apr 5, 2:25 AM CSTFlash Flood WarningSHVPike3 hr

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.