Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 47, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at May 24, 1997, 4:39 PM CDT for Harris County, Texas. It was in force for 66 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 24, 1997, 4:39 PM CDT (21:39 UTC)
- Expired
- May 24, 1997, 5:45 PM CDT
- In force
- 66 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 21:43 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, 9.7 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
- 719 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 612 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.4
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 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 24, 2:45 PM CDT, 1 hour 54 minutes earlier.
Area forecast discussion, May 24, 2:45 PM CDT, 1 hour 54 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 245 PM CDT SAT MAY 24 1997 A LOT OF COVERAGE ON THE RADAR THIS AFTN. CONVECTION ASSOCIATED WITH THAT 2ND S/W - WITH THE AMS OVER SE TX STILL VERY UNSTABLE/MOIST/WARM (ADAP LIs AOA -8/SFC DWPNTS IN THE LWR 70S). AFTER THE ACTIVITY THIS AFTN, THINGS SHOULD CALM DOWN A BIT FOR THE REMAINDER OF THE MEMORIAL DAY WEEKEND. UPPER FLOW GOES ZONAL TONITE AS THE MID-LEVELS BECOME A BIT MORE SWLY. WHILE AT THE SFC... MOST OF THE MOISTURE GETS SCOURED (BY WAY OF THE STORMS TODAY) WITH THE AMS REMAINING VERY UNSTABLE (LI PROGGED FOR TOMORROW: -6/-10 AND CAPES PROGGED AT 30-50K). AGAIN, NO MOISTURE TO WORK ON AND NO FOCI/TRIGGERS INDICATED BY THE MODELS THRU MONDAY (EXCEPT MAYBE THE SEABREEZE). SFC WINDS ALSO BECOME MORE SWLY THRU MON. SO, THE BOTTOM LINE FCST: DRYING AND WARMING. WILL TAKE A BLEND OF GUIDANCE NUMBERS. 41 PRELIMS... CLL T-E/E-B B/B 67/90 69/93 6222 (+R/SVR WX TONIGHT) IAH T-E/E-B B/B 70/90 73/92 6222 (+R/SVR WX TONIGHT) GLS T-E/E-B B/B 74/84 75/86 2222
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 3:08 PM CDT | Flash Flood Warning | HGX | Austin, Colorado | 3 hr |
| May 24, 3:16 PM CDT | Severe Thunderstorm Warning | HGX | Austin | 29 min |
| May 24, 3:26 PM CDT | Flash Flood Warning | HGX | Harris, Waller | 3 hr |
| May 24, 3:31 PM CDT | Severe Thunderstorm Warning | HGX | Colorado | 59 min |
| May 24, 3:41 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 64 min |
| May 24, 3:51 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 69 min |
| May 24, 4:39 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 66 min |
| May 24, 6:35 PM CDT | Flash Flood Warning | HGX | Harris | 3 hr |
Nearby
Flash Flood Warnings in Texas, 1997Every flash flood warning in 1997
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.