Alert archive / Texas / Flash Flood Warnings in 1997
Flash Flood Warning 66, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Jul 7, 1997, 9:16 PM CDT for Trinity County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 7, 1997, 9:16 PM CDT (02:16 UTC)
- Expired
- Jul 8, 1997, 12:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County Trinity County, TX
The radar
The Houston radar (KHGX), 180 km from the middle of the area, began a volume at 02:18 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
Shreveport, LA (KSHV), launched 00:00Z, 2.3 hours before the alert went out and 203 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
- 2485 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 7, 7:54 PM CDT, 1 hour 22 minutes earlier.
Area forecast discussion, Jul 7, 7:54 PM CDT, 1 hour 22 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 750 PM CDT MON JUL 7 1997 STANDARD DIURNAL CHGS TO FCST REQUESTED... DROP POPS FOR INLAND ZONES AND DO SOME REWORDING FOR COAST... LATE FORMING SEABREEZE CONVECTION NOW ALONG BRENHAM TO LIBERTY LINE SHOULD DISSIPATE SOON AFTER SS. SAME GOES FOR TSTMS BETWEEN LIVINGSTON AND CROCKETT WHICH HAVE FIRED ON AN INTERSECTION OF TWO OLD OUTFLOW BOUNDARIES. DO NOT EXPECT ANY REDEVELOPMENT OF PCPN PRIOR TO SR EXCEPT POSSIBLY ALONG COAST. AS FOR THE CASE OF PCPN ALONG THE COAST... EXPECT THIS TO BE SPONSORED BY AREA OF DEEP TROPICAL MOISTURE MOVING UP FROM W GULF OF MEXICO. MODELS HAVE INTRIGUING MISH-MASH OF PCPN FCST NEXT 24 HRS... AND ALTHOUGH NOT ALL OF IT ASSOCTD WITH THIS TROPICAL "SYSTEM" (IF SOMETHING THIS DISORGANIZED CAN BE CALLED THAT)... I DON'T LIKE ANY OF THEM. I SUSPECT THAT PCPN WILL ACTUALLY HAVE THE KIND OF LOGICAL DEVELOPMENT THAT WOULD BE INSINUATED BY JUST EXTRAPOLATING WHAT CAN BE SEEN OVER THE PAST 12 HOURS OR SO ON SATELLITE... SPREADING GRADUALLY NEWD FROM THE COASTAL BEND AREA DURG THE MORNING HOURS TMRW. THIS ALSO AGREES WITH ANTICIPATED FLOW CHANGES AS WK 5H TROF AXIS OVR EXTREME SE TX PULLS FURTHER EWD AND A DEEP SOUTHERLY FLOW SETS IN FOR A WHILE. FOR TONIGHT... WOULD DROP POPS/HEAVY RAIN FOR INLAND ZONES AND CHG WORDING TO "EVENING SHOWERS ENDING... BECOMING MOSTLY FAIR". FOR COAST... WOULD KEEP 30 PCT POP BUT REWORD TO "SHOWERS OR THUNDERSTOMRS TOWARDS MORNING", AND ALSO DROP MENTION OF LOCALLY HEAVY RAIN. FOR TUE... CURRENT FCST COVERS ANTICIPATED POTENTIAL FOR RAIN WITH POPS WELL ABV GUIDANCE. 38
In the hours before
Special weather statement, Jul 7, 3:23 PM CDT, 5 hours 53 minutes before
TXZ176>179-195>200-210>214-226-227-080200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 315 PM CDT MON JUL 7 1997 THE THREAT OF SEVERE WEATHER FOR A LARGE PART OF SOUTHEAST TEXAS FOR TONIGHT HAS DIMINISHED. A WEAK MID TO UPPER LEVEL DISTURBANCE WILL MOVE SLOWLY ACROSS NORTHEAST TEXAS AND NORTHERN LOUSIANA LATE THIS AFTERNOON AND TONIGHT. THIS DISTURBANCE HAS BEEN TRIGGERING THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS OVER THE EXTREME EASTERN PORTIONS OF SOUTHEAST TEXAS. SINCE MOST OF THE ENERGY FROM THE UPPER LEVEL DISTURBANCE WILL REMAIN TO NORTH AND NORTHEAST OF OUR REGION TONIGHT...STRONG THUNDERSTORM DEVELOPMENT IS NOT EXPECTED TO BE FAVORABLE OVER OUR REGION. HOWEVER...THUNDERSTORMS THAT MAY DEVELOP ALONG AND NEAR OUTFLOW BOUNDARIES TO THE NORTHEAST AND EAST OF OUR REGION DURING THE LATE AFTERNOON AND EARLY EVENING HOURS...WILL LIKELY PRODUCE LOCALLY HEAVY RAIN. THESE STORMS MAY AFFECT THE EASTERN PORTIONS OF SOUTHEAST TEXAS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 8:46 PM CDT | Severe Thunderstorm Warning | HGX | Trinity | 44 min |
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.