Alert archive / Texas / Flash Flood Warnings in 2000
Flash Flood Warning 5, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at May 19, 2000, 6:16 PM CDT for Harris County, Texas. It was in force for 119 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
- May 19, 2000, 6:16 PM CDT (23:16 UTC)
- Expired
- May 19, 2000, 8:15 PM CDT
- In force
- 119 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Harris County, TX
The radar
The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 23:19 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, 11.3 hours before the alert went out and 213 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.
- Mixed-layer CAPE
- 475 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KHGX 192321 FFWHGX TXC201-200115- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 616 PM CDT FRI MAY 19 2000 THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON TX HAS ISSUED A * FLASH FLOOD WARNING FOR... HARRIS COUNTY IN SOUTHEAST TEXAS * UNTIL 815 PM CDT * AT 612 PM CDT...DOPPLER RADAR INDICATED VERY HEAVY RAINFALL ACROSS NORTH AND NORTHEASTERN PARTS OF HARRIS COUNTY. INDIVIDUAL CELLS WERE MOVING NORTH AT 5 TO 10 MPH WITH ADDITIONAL TRAINING RAINS DEVELOPING TO THE SOUTH. THE HEAVIEST RAINFALL WAS CENTERED NEAR BUSH INTERCONTINENTAL AIRPORT WHERE RAINFALL RATES AVERAGED 2 1/2 INCHES PER HOUR. RADAR INDICATED 4 TO 5 INCH AMOUNTS OF RAIN HAS FALLEN JUST WEST OF THE AIRPORT. ADDITIONAL CELL MERGERS AND TRAINING RAINS COULD PRODUCE LOCALIZED 5 INCH AMOUNTS THROUGH THE PERIOD. * FLOODING IS EXPECTED IN OR NEAR... ALDINE...CROSBY...HUMBLE...LAKE HOUSTON FLOODING IS OCCURRING! MOVE TO HIGHER GROUND IMMEDIATELY! TAKE IMMEDIATE ACTION TO PROTECT YOUR LIFE AND PROPERTY IF YOU LIVE ALONG A STREAM...CREEK...OR BAYOU IN THESE AREAS. DO NOT CROSS ANY LOCATION WHERE WATER COVERS THE ROAD! PLEASE REPORT FLOODING TO THE COUNTY SHERIFF...LOCAL POLICE...OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.
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.
NWS Houston/Galveston, TX wrote its last area forecast discussion before this flash flood warning went out at May 19, 2:50 PM CDT, 3 hours 26 minutes earlier.
Area forecast discussion, May 19, 2:50 PM CDT, 3 hours 26 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION...CORRECTED NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 250 PM CDT FRI MAY 19 2000 UPPER LEVEL ENERGY MOVING ACROSS W TEXAS EXPECTED TO APPROACH OUR CWFA THIS EVENING. RR QUAD AND UPPER LEVEL DIFFLUENCE IN PLACE. FRONTAL BOUNDARY WILL SAG SOUTHWARD OVERNIGHT. PW VALUES WILL APPROACH 2 INCHES CLOSE TO FRONTAL BOUNDARY. EXPECT BOUNDARY TO MOVE SLOWLY ACROSS NORTHERN ZONES TONIGHT...HENCE WILL ISSUE FFA FOR TONIGHT FOR NORTH AND NORTHWESTERN ZONES (HAVE COORDINATED W/WFOS EWX AND FWD ON THIS). EVENING SHIFT WILL HAVE TO MONITOR THIS CLOSELY AND DEPENDING ON EXPECTED PROGRESSION...MAY HAVE TO EXTEND AREA SOUTHWARD. UPPER LEVEL ENERGY WILL EXIT REGION SATURDAY. MESO-ETA INDICATE WEAK FRONTAL BOUNDARY SURGING NORTHWARD SATURDAY. NEXT UPPER LEVEL ENERGY WILL APPROACH REGION (W/IN NORTHWEST FLOW) LATER SUNDAY. PROGGED ETA SOUNDING INDICATE QUITE MOIST UNSTABLE AIR MASS ON SUNDAY. STILL UNCERTAIN ON WHAT POSSIBLE MESO EVENT MAY DEVELOP LATE IN THE WEEKEND BUT WILL DEFINITELY GO HIGHER THAN GUIDANCE NUMBERS ESPECIALLY FOR NORTHERN ZONES. MARINE AREA CALLS FOR SCATTERED CONVECTION THROUGH THE FORECAST PERIOD. DO NOT BELIEVE THAT ANY MCS ACTIVITY TO THE NORTH WILL PROPAGATE FAR SOUTH TO COASTAL WATERS. 31/37 .KHGX...FLASH FLOOD WATCH TONIGHT FOR BURLESON...BRAZOS...MADISON... HOUSTON...TRINITY...WALKER...GRIMES...WASHINGTON...AUSTIN...AND COLORADO COUNTIES. CLL TT 068/084 067/087 068 8534 IAH CE 071/085 069/087 070 6434 GLS CE 075/083 073/083 075 5434
In the hours before
Special weather statement, May 19, 3:37 PM CDT, 2 hours 39 minutes before
TXZ176-177-195>199-211-212-200300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 337 PM CDT FRI MAY 19 2000 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR NORTHWESTERN PORTIONS OF SOUTHEAST TEXAS FROM 4 PM UNTIL 10 PM. COUNTIES THE WATCH AREA INCLUDE: AUSTIN...BRAZOS...BURLESON...GRIMES...MADISON...MONTGOMERY...WALKER... WALLER...AND WASHINGTON COUNTIES. LEON...MILAM AND ROBERTSON COUNTIES IN CENTRAL TEXAS ARE ALSO INCLUDED IN THE WATCH AREA. REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE TELEVISION SERVICE PROVIDER FOR LATER STATEMENTS CONCERNING THIS SEVERE WEATHER THREAT.
Nearby
Flash Flood Warnings in Texas, 2000Every flash flood warning in 2000
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.