Alert archive / Texas / Flash Flood Warnings in 1990

Flash Flood Warning 4, NWS Amarillo, TX

April 25, 1990Moore County, Texas

NWS Amarillo, TX issued this flash flood warning at Apr 25, 1990, 3:50 AM CDT for Moore County, Texas. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Apr 25, 1990, 3:50 AM CDT (08:50 UTC)
Expired: Apr 25, 1990, 6:00 AM CDT
In force: 2 hr
Issued by: NWS Amarillo, TX
Area: Whole counties

County Moore 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

Amarillo Airport, TX (KAMA), launched 00:00Z, 8.8 hours before the alert went out and 70 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 3460 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAMA 250852
FFWAMA
TXC341-251245-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
350 AM CDT WED APR 25 1990
 
THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  745 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN THE TEXAS PANHANDLE
          ...MOORE
 
AT 350 AM CDT...NATIONAL WEATHER SERVICE RADAR IN AMARILLO WAS
DETECTING A SLOW MOVING LINE OF THUNDERSTORMS IN MOORE COUNTY. RADAR-
DERIVED ESTIMATES OF RAINFALL SUGGEST THAT 2 TO 4 INCHES OF RAIN HAS
FALLEN IN THE COUNTY SINCE 1AM THIS MORNING.
 
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY.  MOVE UP TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Apr 24, 10:49 PM CDT, 5 hours 1 minute before

STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO, TX
1050 PM CDT TUE APR 24 1990

STORM REPORT FOR APRIL 24 1990

1)  1532-1630 CST..SVR TSTM FOR DONLEY CNTY
      1534-1540..PING PONG SIZE HAIL TO A LITTLE LARGER THAN
        GOLFBALL SIZE HAIL 2 MILES SOUTHWEST OF CLARENDON..RPTD
        BY CLARENDON PD
      1541 CST..QUARTER SIZE HAIL IN CLARENDON..RPTD BY PD
      1605 CST..QUARTER SIZE HAIL IN CLARENDON..RPTD BY SPOTTER

2)  1626-1730 CST..SVR TSTM FOR NRN DONLEY/SRN GRAY
      1707 CST..GOLFBALL SIZE HAIL 3 MILES SOUTH OF MCLEAN..RPTD
        BY GRAY CNTY SO
      1711 CST..TORNADO RPTD 5 S OF MCLEAN..TORNADO TOUCHED DOWN
        2 TIMES IN OPEN COUNTRY WITH NO DAMAGE OCCURRED..RPTD BY
        GRAY CNTY SO
      1725 CST..GOLFBALL SIZE HAIL SOUTHWEST OF ALANREED (SOUTH OF
        I40) IN NRN DONLEY CNTY..RPTD BY NWS EMPLOYEE

3)  1658-1800 CST..SVR TSTM WRNG FOR SRN WHEELER CNTY
      1751 CST..GOLFBALL SIZE HAIL AT HEALD (8 MILES NORTH OF I40)
        NEAR GRAY CNTY LINE. HAIL WAS 1 TO 2 INCHES DEEP..RPTD BY
        SHAMROCK PD

4)  1713-1745 CST..TORNADO WRNG FOR SERN GRAY CNTY
      1716 CST..GOLFBALL SIZE HAIL 5 MILES S OF MCLEAN..GRAY CNTY SO
      1728 CST..GOLFBALL SIZE HAIL 3-4 MILES S OF MCLEAN..RPTD BY
        GRAY CNTY SO

5)  1738-1815 CST..TORNADO WRNG FOR SERN GRAY/WRN WHEELER CNTIES
      1805 CST..NICKEL TO QUARTER SIZE HAIL ALONG I40 IN SERN GRAY
        CNTY..RPTD BY NWS EMPLOYEE
      1810 CST..DIME SIZE HAIL 2 MILES E OF THE GRAY CNTY LINE
        (IN WHEELER CNTY) ALONG I40..RPTD BY NWS EMPLOYEE

6)  1759-2000 CST..FLASH FLOOD WRNG FOR SERN GRAY/SWRN WHEELER CNTIES
      1810 CST..WATER 2 TO 4 INCHES DEEP OVER HIGHWAYS AND PORTIONS
        OF I40..RPTD BY SHAMROCK PD
      1815 CST..WATER CONTINUED OVER HIGHWAYS NEAR MCLEAN..RPTD BY
        GRAY SO

7)  1815-1915 CST..SVR TSTM FOR WHEELER CNTY
      1816 CST..TENNIS BALL SIZE HAIL 7 MILES EAST OF GRAY CNTY LINE
        ..RPTD BY NWS EMPLOYEE
      1819 CST..BASEBALL TO SOFTBALL SIZE HAIL 10 MILES NW OF SHAMROCK
        (AT MAGIC CITY)..WINDSHIELDS BUSTED IN 2 PATROL CARS..
        RPTD BY SHAMROCK PD
      1830 CST..TENNIS TO BASEBALL SIZE HAIL 9 MILES EAST OF GRAY
        CNTY LINE..RPTD BY NWS EMPLOYEE
      1840 CST..TENNIS BALL SIZE HAIL IN A 4 MILE LONG SWATH ON FARM
        TO MARKET RD 2473 BETWEEN WHEELER AND KELLERVILLE..RPTD BY
        NWS EMPLOYEE

8)  1908-2000 CST..TORNADO WRNG FOR SRN HEMPHILL
      1930 CST..PUBLIC REPORT OF TORNADO IN SERN HEMPHILL CNTY AT
        BLUERIDGE (15 MILES SE OF CANADIAN)..RPTD BY HEMPHILL CNTY SO

9)  1959-2100 CST..SVR TSTM WRNG FOR HEMPHILL CNTY
      2015 CST..TORNADO 20 MILES EAST OF CANADIAN..POWER LINES DOWNED
        BEFORE TORNADO LIFTED..RPTD BY HEMPHILL CNTY SO

10) 2051-2230 CST..TORNADO WRNG FOR SERN LIPSCOMB/NERN HEMPHILL
      2100 CST..NICKEL SIZE HAIL 7 MILES WEST OF HIGGINS..LASTED
        FOR 5 MINUTES..LIPSCOMB CNTY SO
      2115 CST..QUARTER SIZE HAIL IN HIGGINS..RPTD BY HIGGINS FD

11) 2101-2200 CST..SVR TSTM WRNG FOR DONLEY CNTY
      2125 CST..1 INCH SIZE HAIL IN HEDLEY..RPTD BY HEDLEY PD

WSO..AMA
SC

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 7:15 PM CDT	Severe Thunderstorm Warning	AMA	Wheeler	60 min
Apr 24, 8:08 PM CDT	Tornado Warning	AMA	Hemphill	52 min
Apr 24, 8:59 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill	61 min
Apr 24, 9:51 PM CDT	Tornado Warning	AMA	Hemphill, Lipscomb	39 min
Apr 24, 10:01 PM CDT	Severe Thunderstorm Warning	AMA	Donley	59 min
Apr 24, 11:04 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley	56 min
Apr 24, 11:19 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Potter	56 min
Apr 24, 11:25 PM CDT	Severe Thunderstorm Warning	AMA	Gray, Wheeler	65 min
Apr 24, 11:48 PM CDT	Severe Thunderstorm Warning	AMA	Sherman	57 min
Apr 24, 11:58 PM CDT	Tornado Warning	AMA	Wheeler	62 min
Apr 25, 12:14 AM CDT	Severe Thunderstorm Warning	AMA	Moore, Potter	61 min
Apr 25, 1:00 AM CDT	Tornado Warning	AMA	Wheeler	45 min
Apr 25, 1:04 AM CDT	Severe Thunderstorm Warning	AMA	Hansford	56 min
Apr 25, 1:04 AM CDT	Severe Thunderstorm Warning	AMA	Hemphill	56 min
Apr 25, 1:14 AM CDT	Severe Thunderstorm Warning	AMA	Oldham	61 min
Apr 25, 1:16 AM CDT	Tornado Warning	AMA	Moore	44 min
Apr 25, 2:03 AM CDT	Severe Thunderstorm Warning	AMA	Moore	57 min
Apr 25, 2:23 AM CDT	Severe Thunderstorm Warning	AMA	Sherman	67 min
Apr 25, 3:01 AM CDT	Severe Thunderstorm Warning	AMA	Moore	59 min

Nearby

Flash Flood Warnings in Texas, 1990 Every flash flood 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.