Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 5, NWS Fort Worth, TX

February 1, 1990Brazos County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Feb 1, 1990, 8:20 AM CST for Brazos County, Texas. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Feb 1, 1990, 8:20 AM CST (14:20 UTC)
Expired
Feb 1, 1990, 9:00 AM CST
In force
40 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County Brazos 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, 2.3 hours before the alert went out and 243 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 1990-02-01Temperature 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, Stephenville/Cla, TX at 12:00Z on 1990-02-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -152 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
620 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
-152 m²/s²
0-3 km storm-relative helicity
-50 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.

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, Feb 1, 3:17 AM CST, 5 hours 3 minutes before
TXZ031-011030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
310 AM CST THU FEB 1 1990

...SHOWERS AND THUNDERSTORMS INCREASING ACROSS CENTRAL TEXAS...

AT 3:00 AM CST...WACO RADAR SHOWED SCATTERED SHOWERS AND THUNDERSTORMS
DEVELOPING RAPIDLY IN HILL...BOSQUE...AND PORTIONS OF CORYELL AND
MCLENNAN COUNTIES. THE STRONGEST STORM WERE LOCATED NORTHEAST OF
CLIFTON IN BOSQUE COUNTY. WITH A MOVEMENT TOWARD THE NORTHEAST AT
40 MPH...THIS WILL BRING THE STORM ACROSS LAKE WHITNEY INTO HILL
COUNTY SHORTLY. ANOTHER THUNDERSTORM WITH HEAVY RAIN WAS IN EASTERN
HAMILTON COUNTY AND MOVING TOWARD SOUTHERN BOSQUE COUNTY.

THESE THUNDERSTORMS WERE PART OF A LARGER AREA OF SHOWERS AND
THUNDERSTORMS WHICH EXTENDED ALONG A LINE FROM DALLAS...TO WACO...
TO JOHNSON CITY...AND WESTWARD BEYOND 100 MILES.
<
PERSONS IN MCLENNAN AND SURROUNDING COUNTIES SHOULD EXPECT PERIODS
<OF VERY HEAVY RAIN ALONG WITH STRONG GUSTY WINDS AND DANGEROUS
LIGHTNI'NG WITH THESE STORMS.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER WEATHER INFORMATION.
Special weather statement, Feb 1, 3:31 AM CST, 4 hours 49 minutes before
TXZ021-022-025-026-027-031-032-011000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
330 AM CST THU FEB 01 1990

...SCATTERED SHOWERS AND THUNDERSTORMS INCREASING ACROSS NORTH TEXAS...

AT 325 AM CST...SCATTERED SHOWERS AND THUNDERSTORMS...SOME PRODUCING
HEAVY RAIN...CONTINUED TO DEVELOP AND SPREAD EASTWARD ACROSS THE WESTERN
HALF OF NORTH TEXAS.  A LINE OF STRONG THUNDERSTORMS WERE JUST SOUTH
OF WICHITA FALLS AND EXTENDED FROM NEAR HENRIETTA TO BETWEEN ARCHER
CITY AND JACKSBORO...TO GRAHAM AND BRECKENRIDGE.  MOVEMENT OF ALL
PRECIPITATION WAS GENERALLY TO THE NORTHEAST AT 40 MILES AN HOUR.

THE STRONGER THUNDERSTORMS ARE CAPABLE OF PRODUCING LOCALLY HEAVY RAINS
...GUSTY :SURFACE WINDS...DANGEROUS CLOUD TO GROUND LIGHTNING AND PERHAPS
SOME SMALL HAIL.

STAY TUNED TO NOAA WEATHER RADIO...LOCAL RADIO OR TV FOR THE LATEST
WEATHER INFORMATION.
Special weather statement, Feb 1, 4:06 AM CST, 4 hours 14 minutes before
TXZ021-022-025-026-011500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
355 AM CST THU FEB 01 1990

...DENSE FOG ADVISORY REVISED TO INCLUDE ONLY A SMALL PART OF NORTH
TEXAS UNTIL AROUND MID MORNING...

A DENSE FOG ADVISORY IS IN EFFECT FOR THE NORTH CENTRAL PART OF NORTH
TEXAS UNTIL MID MORNING.  THE CITIES OF BRECKENRIDGE...EASTLAND...
COMANCHE...DENTON...GAINESVILLE...SHERMAN...BONHAM...PARIS...GREENVILLE
...WEATHERFORD...WAXAHACHIE AND THE DALLAS/FORT WORTH METROPLEX ARE
INCLUDED IN THE DENSE FOG ADVISORY.

A SOUTHERLY WIND FLOW FROM THE GULF OF MEXICO CONTINUED TO INCREASE
THE MOISTURE FIELD OVER THE ADVISORY AREA...AND WAS RAISING RELATIVE
HUMIDITIES TO NEAR TOTAL SATURATION.  PATCHY DENSE FOG THIS MORNING
WILL RESTRICT VISIBILITIES TO LESS THAN 1/4 MILE IN MANY SECTIONS...
AND AT TIMES...VISIBILITIES MAY EVEN REACH NEAR ZERO IN SOME PLACES.

SHOWERS...LIGHT RAIN AND DRIZZLE WILL HELP TO MAKE ROADS SLICK CAUSING
HAZARDOUS DRIVING CONDITIONS.  EARLY MORNING TRAVELERS AND COMMUTERS
MAY WANT TO LEAVE HOME A LITTLE EARLY IN CASE OF TRAFFIC DELAYS.

MOTORISTS ARE ADVISED TO ALLOW PLENTY OF SPACE BETWEEN YOU AND THE
CAR AHEAD.  TAKE ALL SAFETY PRECAUTION`S SO THAT YOU MAY REACH YOUR
DESTINATION SAFELY.

ADDITIONAL STATEMENTS WILL BE ISSUED TO KEEP YOU INFORMED OF THE
CHANGING WEATHER CONDITIONS.
Special weather statement, Feb 1, 5:38 AM CST, 2 hours 42 minutes before
TXZ031-037-011300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
535 AM CST THU FEB 1 1990

...THUNDERSTORMS CONTINUE TO INTENSIFY ACROSS MCLENNAN AND SURROUNDING
COUNTIES...

AT 5:25 AM CST...WACO RADAR NUMEROUS SHOWERS AND THUNDERSTORMS FROM
JACKSBORO TO DALLAS...AND SOUTHWARD ACROSS THE WACO AREA TO A LAKE
TRAVIS/ROSEBUD LINE. THE THUNDERSTORMS HAVE INCREASED IN COVERAGE
AND INTENSITY DURING THE PAST HOUR OR SO.

THE STRONGEST STORMS WERE LOCATED ALONE A LINE FROM WESTERN BELL
COUNTY SOUTH OF KILLEEN...NORTHWARD ACROSS CORYELL COUNTY TO EAST
OF WALNUT SPRINGS IN BOSQUE COUNTY AND BEYOND. THUNDERSTORMS WERE
MOVING NORTHEAST AT 40 MPH.

STRONG GUSTY WINDS...DANGEROUS LIGHTNING...POSSIBLE HAIL...AND
PERIODS OF VERY HEAVY RAIN SHOULD BE EXPECTED WITH THE LARGER STORMS.
<SOME LOCAL STREET FLOODING IS ALSO POSSIBLE.  MOTORISTS ARE ADVISED
TO REDUCE SPEEDS SINCE VISIBILITIES AND STOPPING TIME WILL BE GREATLY
REDUCED BY HEAVY RAIN.

OTHERWISE A FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF CENTRAL AND
SOUTH CENTRAL TEXAS INCLUDING THE WACO AND BRYAN/COLLEGE STATION
AREAS.

STAY TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
Special weather statement, Feb 1, 6:05 AM CST, 2 hours 15 minutes before
NORTH TEXAS SEVERE WEATHER OUTLOOK STATEMENT
NATIONAL WEATHER SERVICE FT WORTH TX
600 AM CST THU FEB 1 1990

THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS OVER NORTH TEXAS FOR
TODAY AND TONIGHT GENERALLY TO THE EAST OF A WACO TO PARIS LINE.  OVER
THE REMAINDER OF NORTH TEXAS THERE IS A SLIGHT RISK OF SEVERE
THUNDERSTORMS TODAY AND EARLY THIS EVENING.  THE SEVERE THUNDERSTORMS
WILL PRODUCE HAIL IN EXCESS OF 3/4 INCH...DAMAGING WINDS IN EXCESS OF
60 MPH AND POSSIBLY TORNADOES.

A STRONG UPPER AIR STORM CENTER...LOCATED OVER NORTHERN MEXICO THIS
MORNING...WILL MOVE NORTHEASTWARD ACROSS NORTH TEXAS TODAY AND THIS
EVENING.   WITH AMPLE LOW AND MID LEVEL MOISTURE IN PLACE OVER THE
AREA...PLUS MORE MOISTURE POURING IN ON WARM LOW LEVEL FLOW...THE AIR
MASS WILL CONTINUE TO BECOME MORE UNSTABLE AS THE UPPER AIR TROUGH
APPROACHES.  A SURFACE LOW PRESSURE CENTER IS DEVELOPING NEAR
STEPHENVILLE WHILE A DRY LINE...SEPARATING DRY AIR TO THE WEST FROM
THE MOIST AIR TO THE EAST IS IN PLACE OVER WEST TEXAS.  THIS DRY LINE
WILL MOVE EASTWARD TODAY...IN RESPONSE TO THE EASTWARD MOVEMENT OF THE
UPPER AIR STORM CENTER AND MERGE WITH THE SURFACE LOW.  THESE FEATURE
WILL SERVE AS A FOCUS FOR INTENSFYING THE THUNDERSTORM DEVELOPMENT
LATER THIS MORNING AND AFTERNOON.  THE DRY LINE SHOULD MOVE TO NEAR A
SHERMAN...DALLAS...WACO LINE BY SUNSET AND THROUGH EAST TEAXS BY
SUNRISE.  WITH PASSAGE OF THE DRY LINE...THUNDERSTORMS WILL END.

THIS IS A VERY INTENSE UPPER AIR STORM CENTER MOVING THROUGH NORTH
TEXAS.  BY LATE MORNING...A JET MAX WILL MOVE INTO NORTH TEXAS AND MID
LEVEL DRYING WILL BE TAKING PLACE...AND VERTICAL WIND SHEARS WILL BE
MORE FAVORABLE.  THESE INGREDIENTS ARE FAVORABLE FOR THE FORMATION OF
TORNADOES.  EMERGENCY MANAGEMENT DIRECTORS AND STORM SPOTTER GROUPS
AREA WIDE SHOULD BE IN A HIGH STATE OF READINESS TODAY FOR ACTIVATION.
THIS ALERT WILL CONTINUE FOR THOSE GROUPS OVER THE EASTERN HALF THE
AREA TONIGHT.
Special weather statement, Feb 1, 8:07 AM CST, 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 1, 5:09 AM CSTFlash Flood WarningFWDJohnson4 hr
Feb 1, 6:33 AM CSTFlash Flood WarningFWDTarrant4 hr
Feb 1, 6:55 AM CSTFlash Flood WarningFWDDallas, Ellis4 hr
Feb 1, 7:52 AM CSTFlash Flood WarningFWDFannin4 hr
Feb 1, 7:58 AM CSTFlash Flood WarningFWDCollin4 hr
Feb 1, 9:10 AM CSTFlash Flood WarningFWDDenton2 hr
Feb 1, 4:06 PM CSTSevere Thunderstorm WarningFWDHamilton54 min
Feb 1, 4:36 PM CSTSevere Thunderstorm WarningFWDCoryell69 min
Feb 1, 5:09 PM CSTSevere Thunderstorm WarningFWDBosque, McLennan66 min
Feb 1, 5:09 PM CSTSevere Thunderstorm WarningFWDBell66 min
Feb 1, 5:50 PM CSTSevere Thunderstorm WarningFWDFalls, Limestone55 min
Feb 1, 5:50 PM CSTSevere Thunderstorm WarningFWDHill55 min

Nearby

Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990

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.