Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 48, NWS Fort Worth, TX

March 11, 1986Delta County, Lamar County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 11, 1986, 7:47 PM CST for Delta County, Lamar County, Texas. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Mar 11, 1986, 7:47 PM CST (01:47 UTC)
Expired
Mar 11, 1986, 8:45 PM CST
In force
58 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

Counties Delta County, TX, Lamar County, TX

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, 1.8 hours before the alert went out and 162 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 1986-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2309 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 1986-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 323 square meters per square second.1939587897Sfc1 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
2309 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
524 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
323 m²/s²
0-3 km storm-relative helicity
327 m²/s²
Significant tornado parameter
5.0
Supercell composite
17.6

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, Mar 11, 2:03 PM CST, 5 hours 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
200 PM CST TUE MAR 11 1986

...A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CST THIS EVENING
   FOR MOST OF NORTH CENTRAL TEXAS...

AT 200 PM CST..WEATHER SERVICE RADAR INDICATED A RAPIDLY DEVELOPING
LINE OF STRONG THUNDERSTORMS JUST WEST OF ABILENE AND EXTENDING NORTH
TO THE RED RIVER WEST OF WICHITA FALLS. THIS LINE OF STRONG
THUNDERSTORMS IS EXPECTED TO MOVE EASTWARD ACROSS NORTH CENTRAL TEXAS
DURING THE NEXT SEVERAL HOURS. PRESENT MOVEMENT OF THESE THUNDERSTORMS
IS TO THE NORTHEAST AT 40 MILES AN HOUR.

PERSONS LIVING STEPHENS..EASTLAND..PALO PINTO..WISE..COOKE..COMANCHE..
AND ERATH COUNTIES CAN EXPECT THESE THUNDERSTORMS TO MOVE OVER YOUR
AREA DURING THE NEXT COUPLE OF HOURS. THE STRONGEST THUNDERSTORMS
WILL HAVE THE POTENTIAL TO SPAWN VIOLENT TORNADOES..DAMANGING WINDS..
AND LARGE HAIL AS WELL AS VERY HEAVY RAIN AND DEADLY LIGHTNING.
<
RESIDENTS OF NORTH TEXAS ARE URGED TO KEEP INFORMED OF DEVELOPING
THUNDERSTORMS IN YOUR AREA AND TO SEEK REINFORCED SHELTER IF
THREATENING WEATHER IS SIGHTED OR A WARNING IS ISSUED FOR YOUR AREA.

REMEMBER IF A TORNADO WARNING IS ISSUED FOR YOUR LOCATION..ABAdNDON
YOUR CAR OR MOBILE HOME FOR A REINFORCED SHELTER. IF IN BUILDING OR
HOUSE..THE CENTRAL INTERIOR SECTION ON THE LOWEST FLOOR OFFERS THE
BEST POSSIBLE PROTECTION.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 11, 6:04 PM CSTTornado WarningFWDDenton56 min
Mar 11, 6:16 PM CSTSevere Thunderstorm WarningFWDCollin59 min
Mar 11, 6:26 PM CSTSevere Thunderstorm WarningFWDGrayson64 min
Mar 11, 6:35 PM CSTSevere Thunderstorm WarningFWDBosque55 min
Mar 11, 6:53 PM CSTSevere Thunderstorm WarningFWDEllis, Johnson67 min
Mar 11, 7:09 PM CSTSevere Thunderstorm WarningFWDFannin, Hunt66 min
Mar 11, 8:34 PM CSTSevere Thunderstorm WarningFWDRed River56 min
Mar 11, 9:24 PM CSTSevere Thunderstorm WarningFWDFranklin, Titus66 min
Mar 11, 9:24 PM CSTSevere Thunderstorm WarningFWDFreestone66 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.