Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 50, NWS Houston/Galveston, TX

April 16, 2001Polk County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 16, 2001, 6:57 PM CDT for Polk County, Texas. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 16, 2001, 6:57 PM CDT (23:57 UTC)
Expired: Apr 16, 2001, 7:30 PM CDT
In force: 33 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Polk County, TX

The radar

The Houston radar (KHGX), 149 km from the middle of the area, began a volume at 23:56 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 12.0 hours before the alert went out and 173 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: 1303 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 586 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

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.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 16, 2:25 PM CDT, 4 hours 32 minutes earlier.

Area forecast discussion, Apr 16, 2:25 PM CDT, 4 hours 32 minutes before

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
225 PM CDT MON APR 16 2001

QUICK DISCUSSION THIS AFTERNOON DUE TO SEVERE STORMS.

VERY SHORT TERM...SEE THE 940 AM DISCUSSION IT'S HAPPENING NOW.
QUARTER TO GOLFBALL-SIZE HAIL REPORTED IN WINNIE BETWEEN 205 AND 220
PM.

LATER TONIGHT AND TUE...PREFER AND AVN/ETA BLEND...THEN THE ETA OUT
TO 60 HR AS THE AVN OVERPLAYS THE SECONDARY SHORTWAVE IN THE NW FLOW
ON WED. FWC/MAV TEMPS SEEMS A BIT TOO WARM FROM TUE AFT-THU AM.
GRUMM/HART ANOMALIES ARE AROUND 2 STD BELOW THE MEAN...WHICH SHOULD
GENERATE HIGHS IN THE MID TO UPPER 60S AND LOWS IN THE LOWER 40S
INLAND.

EXTENDED...THE MRF IS MOSTLQY ON TRACK...NO POPS WED-SAT...SLIGHT
CHANCE SUN/MON.

.HGX...NONE.

31/47/DO

PRELIMS...
CLL CB 055/066 044/068 050 530
IAH CB 057/068 045/068 050 530
GLS CB 066/070 055/067 058 530

In the hours before

Local storm report, Apr 16, 4:43 PM CDT, 2 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
443 PM CDT MON APR 16 2001

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0205 PM    WINNIE                    TX   1 INCH HAIL
04/16/01   CHAMBERS                       REPORTED BY KFDM TV
                                          METEOROLOGIST.

0220 PM    WINNIE                    TX   1.75 INCH HAIL
04/16/01   CHAMBERS                       REPORTED BY KFDM TV
                                          METEOROLOGIST.

0305 PM    TOMBALL                   TX   .88 INCH HAIL
04/16/01   HARRIS                         REPORTED BY HAM RADIO
                                          OPERATOR.

0309 PM    HUNTERS CREEK VILLAGE     TX   1.5 INCH HAIL
04/16/01   HARRIS                         REPORTED BY HOUSTON
                                          EMERGENCY MANAGEMENT.

0320 PM    HUNTERS CREEK VILLAGE     TX   60 MPH TSTM GUST
04/16/01   HARRIS                         REPORTED BY HOUSTON
                                          EMERGENCY MANAGEMENT.

0330 PM    7 SW HOUSTON              TX   .88 INCH HAIL
04/16/01   HARRIS                         MEMORIAL AREA. REPORTED
                                          BY HAM RADIO OPERATOR.

0330 PM    10 SW HOUSTON             TX   .75 INCH HAIL
04/16/01   HARRIS                         WESTBURY AREA

0405 PM    FRESNO                    TX   TORNADO
04/16/01   FORT BEND                      *** 1 INJ ***
                                          POSSIBLE TORNADO.
                                          NUMEROUS TREES AND
                                          POWER LINES DOWN. AT
                                          LEAST 1 PERSON INJURED.
                                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

0405 PM    FRESNO                    TX   2.75 INCH HAIL
04/16/01   FORT BEND                      REPORTED BY EMERGENCY
                                          MANAGEMENT.

0430 PM    2 S SUGARLAND             TX   .75 INCH HAIL
04/16/01   FORT BEND                      REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Apr 16, 4:55 PM CDT, 2 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT...COR (NO TORNADO/INJURY IN FRESNO)
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
455 PM CDT MON APR 16 2001

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0205 PM    WINNIE                    TX   1 INCH HAIL
04/16/01   CHAMBERS                       REPORTED BY KFDM TV
                                          METEOROLOGIST.

0220 PM    WINNIE                    TX   1.75 INCH HAIL
04/16/01   CHAMBERS                       REPORTED BY KFDM TV
                                          METEOROLOGIST.

0305 PM    TOMBALL                   TX   .88 INCH HAIL
04/16/01   HARRIS                         REPORTED BY HAM RADIO
                                          OPERATOR.

0309 PM    HUNTERS CREEK VILLAGE     TX   1.5 INCH HAIL
04/16/01   HARRIS                         REPORTED BY HOUSTON
                                          EMERGENCY MANAGEMENT.

0320 PM    HUNTERS CREEK VILLAGE     TX   60 MPH TSTM GUST
04/16/01   HARRIS                         REPORTED BY HOUSTON
                                          EMERGENCY MANAGEMENT.

0330 PM    7 SW HOUSTON              TX   .88 INCH HAIL
04/16/01   HARRIS                         MEMORIAL AREA. REPORTED
                                          BY HAM RADIO OPERATOR.

0330 PM    10 SW HOUSTON             TX   .75 INCH HAIL
04/16/01   HARRIS                         WESTBURY AREA

0405 PM    FRESNO                    TX   2.75 INCH HAIL 04/16/01
           FORT BEND                      REPORTED BY EMERGENCY
                                          MANAGEMENT.

0430 PM   ? 2 S SUGARLAND             TX   .75 INCH HAIL 04/16/01
           FORT BEND                      REPORTED BY EMERGENCY
                                          MANAGEMENT.

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 15, 7:19 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Grimes	26 min
Apr 15, 8:07 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Montgomery	38 min
Apr 15, 8:35 PM CDT	Severe Thunderstorm Warning	HGX	Burleson, Washington	55 min
Apr 15, 8:47 PM CDT	Severe Thunderstorm Warning	HGX	Montgomery	43 min
Apr 15, 9:24 PM CDT	Severe Thunderstorm Warning	HGX	Harris	36 min
Apr 15, 9:29 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Washington	46 min
Apr 16, 1:55 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	50 min
Apr 16, 2:45 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	60 min
Apr 16, 2:51 PM CDT	Severe Thunderstorm Warning	HGX	Harris	54 min
Apr 16, 3:33 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Washington	27 min
Apr 16, 3:39 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Harris	51 min
Apr 16, 3:49 PM CDT	Severe Thunderstorm Warning	HGX	Waller	56 min
Apr 16, 3:49 PM CDT	Tornado Warning	HGX	Brazoria, Fort Bend	26 min
Apr 16, 4:00 PM CDT	Severe Thunderstorm Warning	HGX	Grimes, Washington	30 min
Apr 16, 4:31 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend	44 min
Apr 16, 4:42 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Waller	63 min
Apr 16, 5:15 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend	60 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning in 2001

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; radar from the NEXRAD Level II archive.