Alert archive / Texas / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 37, NWS Fort Worth, TX

March 7, 1990McLennan County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 7, 1990, 12:21 PM CST for McLennan County, Texas. It was in force for 69 min.

The area

The counties it named.

The facts

Issued
Mar 7, 1990, 12:21 PM CST (18:21 UTC)
Expired
Mar 7, 1990, 1:30 PM CST
In force
69 min
Issued by
NWS Fort Worth, TX
Area
Whole counties

County McLennan 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, 6.4 hours before the alert went out and 113 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 1990-03-07Temperature 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 1990-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -19 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
1473 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
-19 m²/s²
0-3 km storm-relative helicity
163 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 7, 9:04 AM CST, 3 hours 17 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Mar 7, 9:38 AM CST, 2 hours 43 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Mar 7, 10:17 AM CST, 2 hours 4 minutes before
TXZ031-037-071617

URBAN AND SMALL STREAM FLOOD STATEMENT
NATIONAL WEATHER SERVICE WACO TX
1015 AM CST WED MAR 7 1990

...OCCASIONAL HEAVY RAINS COVERING CENTRAL TEXAS...

THUNDERSTORMS AND SHOWERS...WITH OCCASIONAL HEAVY RAIN...COVERED
MOST OF CENTRAL TEXAS. INDIVIDUAL SHOWERS WERE MOVING NORTHEAST
40 MPH...WITH THE AREA DRIFTING TO THE EAST NEAR 30 MPH.

PERSONS THROUGH CENTRAL TEXAS SHOULD USE CAUTION DUE TO FLOODING
OF ROADWAY..LOW LYING..FLOOD PRONE AREAS. BE SUSPICIOUS OF ANY WATER
OVER ROADWAYS.

STAY TUNED TO RADIO..TV OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS.
Special weather statement, Mar 7, 11:16 AM CST, 1 hour 5 minutes before
TXZ021>023-026>028-031>033-072200-

SEVERE WEATHER POTENTIAL STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
1115 AM CST WED MAR 7 1990

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE SOUTH
CENTRAL...EAST...AND NORTHEAST PARTS OF NORTH TEXAS THIS AFTERNOON.
THE AREA IS GENERALLY SOUTHEAST OF A LINE THROUGH TEXARKANA...
SULPHUR SPRINGS...WAXAHACHIE...HILLSBORO AND LAMPASAS. THIS
INCLUDES THE CITIES OF TYLER...LONGVIEW...LUFKIN...AND WACO.

THUNDERSTORMS WERE CONTINUING AT MIDDAY ALONG A RAIN-COOLED BOUNDARY
THAT STRETCHED FROM SHREVEPORT TO LONGVIEW TO PALESTINE TO TEMPLE.
THIS RAIN-COOLED AREA WAS CAUSED BY THUNDERSTORMS LAST NIGHT...
AND REPRESENTED THE BEST AREA FOR SEVERE THUNDERSTORMS TO
DEVELOP THIS AFTERNOON. THAT'S BECAUSE THIS AREA MARKED THE EDGE
OF STRONG LOW LEVEL CONVERGENCE... GOOD TURNING OF THE LOW LEVEL
WINDS...AND BEST INSTABILITES... ALL INGREDIANTS FOR SEVERE
THUNDERSTORMS.

ON THE LARGER SCALE... AN UPPER LEVEL LOW PRESSURE AREA OVER
WESTERN COLORADO AND EASTERN KANSAS THIS MORNING WAS WEAKENING
AS IT MOVED NORTHEAST. ENERGY ASSOCIATED WITH THE SUBTROPICAL
JET STREAM...HOWEVER...WAS FOCUSED OVER THE THUNDERSTORMS IN
CENTRAL AND NORTHEAST TEXAS AND WAS CONTRIBUTING TO THUNDERSTORM
STRENGTH. THUS THIS AREA IS THE FOCUS FOR SEVERE WEATHER THIS
AFTERNOON.

THUNDERSTORMS ARE ALSO POSSIBLE TODAY ALONG THE DRY LINE WHICH
WAS LOCATED FROM GAINESVILLE...TO MINERAL WELLS TO LAMPASAS AT
MIDDAY. BUT BECAUSE THESE THUNDERSTORMS WERE DEEPER IN THE RAIN
COOLED AIR AND THUS CUT OFF SOMEWHAT FROM THE BEST LOW LEVEL
FORCING... THEY WERE NOT EXPECTED TO BECOME AS INTENSE AS THE
THUNDERSTORMS DEVELOPING ALONG A WACO-TYLER LINE.

HEAVY RAINS ARE ALSO A POSSIBILITY... AND A FLASH FLOOD WATCH
REMAINED IN EFFECT FOR TODAY FOR MOST OF NORTH CENTRAL AND
NORTHEAST TEXAS FOR TODAY.

EMERGENCY MANAGEMENT OFFICIALS AND SPOTTERS WILL WANT TO KEEP
IN TOUCH WITH LATEST WEATHER DEVELOPMENTS TODAY. ACTIVATION CAN
BE EXPECTED ANY TIME...BUT THE BEST CHANCES FOR SEVERE WEATHER
WILL EXIST THIS AFTERNOON...WHEN DAYTIME HEATING IS AT A MAXIMUM.

THUNDERSTORMS WILL GRADUALLY MOVE EAST TONIGHT...DIMINISHING OVER
CENTRAL PORTIONS BUT CONTINUING OVER SOUTHEAST PORTIONS OF NORTH
TEXAS ON TONIGHT. THUNDERSTORMS ARE EXPECTED OVER NORTHEAST TEXAS
ON THURSDAY...BUT ARE NOT EXPECTED REACH SEVERE LEVELS.
Special weather statement, Mar 7, 11:44 AM CST, 37 minutes before
TXZ031-037-071845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WACO TX
1143 AM CST WED MAR 7 1990

...A FLASH FLOOD WATCH IS IN EFFECT THIS AFTERNOON FOR CENTRAL
TEXAS...

AT 1135 AM CST A STRONG THUNDERSTORM WITH HEAVY RAIN WAS LOCATED
10 MILES WEST OF GATESVILLE...MOVING NORTHEAST 40 MPH.

OTHERWISE...SHOWERS AND THUNDERSTORMS COVERED MOST OF CENTRAL TEXAS
...MOVING EAST 30 MILES AN HOUR...WITH INDIVIDUAL SHOWERS MOVING
NORTHEAST 40 MILES AN HOUR.

PERSONS LIVING IN AND MOTORIST DRIVING THROUGH SHOULD BE EXTREMELY
CAUTIOUS TO POSSIBLE FLOODING OF LOW LYING..FLOOD PRONE AREA. WACO
HAS ALREADY RECEIVED 2.88 INCHES OF RAIN SINCE MIDNIGHT...WITH
OTHER AREAS AROUND CENTRAL TEXAS REPORTING UP TO 4.00 INCHES.

STAY TUNED TO RADIO..TV OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS
OR ADVISORIES.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 6:00 PM CSTSevere Thunderstorm WarningFWDShackelford60 min
Mar 6, 6:05 PM CSTSevere Thunderstorm WarningFWDYoung50 min
Mar 6, 6:11 PM CSTSevere Thunderstorm WarningFWDStephens49 min
Mar 6, 7:53 PM CSTSevere Thunderstorm WarningFWDYoung67 min
Mar 6, 8:06 PM CSTSevere Thunderstorm WarningFWDJack69 min
Mar 6, 8:47 PM CSTFlash Flood WarningFWDJack, Young118 min
Mar 7, 2:00 AM CSTFlash Flood WarningFWDParker4 hr
Mar 7, 4:27 AM CSTTornado WarningFWDHamilton48 min
Mar 7, 6:10 AM CSTFlash Flood WarningFWDBosque, Hill, McLennan2 hr
Mar 7, 8:47 AM CSTSevere Thunderstorm WarningFWDCoryell58 min
Mar 7, 12:53 PM CSTSevere Thunderstorm WarningFWDBosque, Hill67 min
Mar 7, 3:32 PM CSTSevere Thunderstorm WarningFWDRains, Wood43 min
Mar 7, 3:50 PM CSTSevere Thunderstorm WarningFWDFranklin, Hopkins40 min
Mar 7, 4:24 PM CSTSevere Thunderstorm WarningFWDTitus56 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.