Alert archive / Texas / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 430, NWS Fort Worth, TX

September 5, 1986Navarro County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Sep 5, 1986, 2:53 PM CDT for Navarro County, Texas. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Sep 5, 1986, 2:53 PM CDT (19:53 UTC)
Expired
Sep 5, 1986, 3:45 PM CDT
In force
52 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Navarro 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

Stephenville/Cla, TX (KSEP), launched 12:00Z, 7.9 hours before the alert went out and 154 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, Stephenville/Cla, TX at 12:00Z on 1986-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1858 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, Stephenville/Cla, TX at 12:00Z on 1986-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
1858 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFTW 051953
SVRFTW
TXC349-052045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
253 PM CDT FRI SEP 5 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 345 PM CDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTH CENTRAL TEXAS...NAVARRO

AT 245 PM..WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS JUST WEST OF
CORSICANA. THIS DANGEROUS THUNDERSTORM WAS MOVING EAST AT 20
MILES AN HOUR.

THIS IS A VERY DANGEROUS STORM. IF YOU ARE IN ITS PATH..AND
ESPECIALLY IF YOU ARE A BOATER ON THE LAKES OR A CAMPER..MOVE
TO SHELTER. PREPARE FOR DAMAGING WINDS..LARGE HAIL..AND DEADLY
LIGHTNING.  IF YOU ARE DRIVING IN THIS AREA YOU SHOULD AVOID
AREAS NEAR CREEKS..STREAMS AND LOW WATER CROSSINGS AS THE VERY
HEAVY RAIN CAN QUICKLY FLOOD LOW LYING AREAS.

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, Sep 5, 9:48 AM CDT, 5 hours 5 minutes before
^FTWSPSACT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
 950 AM CDT FRI SEP 5 1986

                    ...SHOWERS IN CENTRAL TEXAS...

AT 945 AM CDT WACO WEATHER RADAR SHOWED ISOLATED LIGHT SHOWERS
DEVELOPING IN PARTS OF BOSQUE COUNTY.  A LARGE AREA OF SHOWERS AND
THUNDERSTORMS CONTINUED IN THE DALLAS/FORT WORTH AREA.  LIGHT TO
MODERATE SHOWERS WERE NOTED NORTH OF HILL COUNTY AS WELL.  ALL THE
PRECIPITATION WAS MOVING EAST AT 15 MPH.

STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS.
Special weather statement, Sep 5, 11:15 AM CDT, 3 hours 38 minutes before
^FTWSPSACT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
 1110 AM CDT FRI SEP 5 1986

             ...HEAVY THUNDERSTORMS IN HILL COUNTY...

AT 1105 AM CDT WACO WEATHER RADAR SHOWED SCATTERED MODERATE SHOWERS
AND HEAVY THUNDERSTORMS IN NORTHERN HILL COUNTY.  THE HEAVIEST RAINS
WERE 6 MILES NORTHWEST AND 4 MILES NORTH OF HILLSBORO.  MOVEMENT OF
ALL THE PRECIPITATION WAS EAST AT 10 TO 15 MPH.  THESE HEAVY RAINS
ARE AFFECTING A LARGE PORTION OF I-35 THROUGH HILL COUNTY.  MOTORIST
ON I-35..I-35E AND I-35W ARE URGED TO DRIVE WITH CAUTION.  VISIBILITIES
WILL BE RESTRICTED DUE TO HEAVY RAINFALL.  BRIEF FLASH FLOODING OF LOW
LYING AND NORMALLY FLOOD PRONE AREAS SUCH AS LOW WATER CROSSItNG MAY
ALSO OCCUR.  DO NOT ATTEMPT TO CROSS HIGH WATER EITHER ON FOOT OR IN A
VEHICLE.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR T.V. STATIONS
FOR ADDTIONAL STATEMENTS.
Special weather statement, Sep 5, 12:33 PM CDT, 2 hours 20 minutes before
^FTWSPSACT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
 1230 PM CDT FRI SEP 5 1986

                ...SHOWERS CONTINUE IN CENTRAL TEXAS...

AT 1225 PM CDT WACO WEATHER RADAR SHOWED SCATTERED SHOWERS AND A FEW
THUNDERSTORMS FROM WAXAHACHE THROUGH HILL COUNTY SOUTH OF HILLSBORO
INTO SOUTHERN BOSQUE COUNTY AND NORTHERN CORYELL COUNTY.  THE HEAVIEST
SHOWERS WERE IN SOUTHERN BOSQUE COUNTY JUST WEST OF VALLEY MILLS..AND
IN NORTHERN CORYELL COUNTY 12 MILES NORTHWEST OF GATESVILLE.  MOVEMENT
WAS EAST AT 20 MPH.  NO HEAVY RAINFALL WAS NOTED IN CENTRAL TEXAS...
HOWEVER VERY HEAVY RAINS CONTINUE IN NORTH TEXAS AND MAY DEVELOPE OVER
MUCH OF CENTRAL TEXAS LATER THIS AFTERNOON.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS.
Special weather statement, Sep 5, 1:52 PM CDT, 1 hour 1 minute before
^FTWSPSACT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
 250 PM CDT FRI SEP 5 1986

                ...SHOWERS AND THUNDERSTORMS CONTINUE...

AT 245 PM CDT WACO WEATHER RADAR SHOWED SCATTERED SHOWERS AND A FEW
THUNDERSTORMS EXTENDING FROM TYLER TO CORSICANA TO 20 MILES NORTHWEST
OF WACO TO GATESVILLE TO SAN SABA.  THE HEAVIEST RAINS IN CENTRAL
TEXAS WERE ALONG THE MCLENNAN..BOSQUE..HILL COUNTY BORDERS FROM WEST
TO VALLEY MILLS.  OTHkER SHOWERS WERE IN NORTHERN CORYELL COUNTY AND
IN CENTRAL HILL COUNTY.  MOVEMENT OF ALL THE PRECIPITATION WAS EAST AT
20 MPH.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR T.V. STATIONS
FOR LATER STATEMENTS.
Special weather statement, Sep 5, 1:55 PM CDT, 58 minutes before
^FTWSPSACT

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
150 PM CDT FRI SEP 5 1986

                ...SHOWERS AND THUNDERSTORMS CONTINUE...

AT 145 PM CDT WACO WEATHER RADAR SHOWED SCATTERED SHOWERS AND A FEW
THUNDERSTORMS EXTENDING FROM TYLER TO CORSICANA TO 20 MILES NORTHWEST
OF WACO TO GATESVILLE TO SAN SABA.  THE HEAVIEST RAINS IN CENTRAL
TEXAS WERE ALONG THE MCLENNAN..BOSQUE..HILL COUNTY BORDERS FROM WEST
TO VALLEY MILLS.  sOTHER SHOWERS WERE IN NORTHERN CORYELL COUNTY AND
IN CENTRAL HILL COUNTY.  MOVEMENT OF ALL THE PRECIPITATION WAS EAST AT
20 MPH.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR T.V. STATIONS
FOR LATER STATEMENTS.

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 9:08 PM CDTSevere Thunderstorm WarningFWDWood52 min
Sep 5, 6:13 AM CDTFlash Flood WarningFWDCollin, Denton4 hr
Sep 5, 7:27 AM CDTFlash Flood WarningFWDWise4 hr
Sep 5, 10:10 AM CDTFlash Flood WarningFWDCollin, Denton3 hr

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.