Alert archive / Texas / Tornado Warnings in 1996
Tornado Warning 11, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at Aug 11, 1996, 6:42 PM CDT for Harris County, Texas. It was in force for 63 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
- Aug 11, 1996, 6:42 PM CDT (23:42 UTC)
- Expired
- Aug 11, 1996, 7:45 PM CDT
- In force
- 63 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 23:42 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, 11.7 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
- 2063 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 665 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 118 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 tornado 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 tornado warning went out at Aug 11, 2:32 PM CDT, 4 hours 10 minutes earlier.
Area forecast discussion, Aug 11, 2:32 PM CDT, 4 hours 10 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 232 PM CDT SUN AUG 11 1996 TSTMS AT 2 PM BEGINNING TO LIGHT UP AN OLD BOUNDARY ALONG LINE FRM AUS TO CLL. TO E OF CLL... WIDELY SCT CONVECTION IS GETTING UNDERWAY... BUT NOT AS DEEP OR RAPID DUE TO MIXING FROM EARLIER RAINS AND DUE TO LOWER TEMPS FROM OVC SKIES. OVER THE SW PTN OF FA... LATE AFTN SEABREEZE CONFLUENCE IS JUST BEGINNING TO SET UP FRM VCNTY GLS WWD TO MATAGORDA BAY... AND MAY HAVE STORMS FIRING ALONG THIS BOUNDARY IN THE NEXT HOUR OR SO. ALL IN ALL... SAME KIND OF THING WE HAVE SEEN OVR THE RGN FOR THE PAST TWO DAYS... AND EXPECTED TO LIKEWISE CONT INTO EVENING... WITH E-W LINE OF CONVECTION FRM AUS TO NR POE KICKING OFF SWD MOVING OUTFLOWS WHICH WILL KEEP CONVECTION ROLLING UNTIL AFTR DARK. ERN PTN OF POLK COUNTY GOT 3-4 INCHES PCPN LAST NIGHT AND MAY BE IN THE WAY OF SOME OF THIS CONVECTION AND POSSIBLY BE AT RISK OF SOME MONOR FLOODING. BUT SINCE THAT IS ONLY RGN OF FA LIKELY TO BE AT RISK UNLESS SIGNIFICANT TRAINING ALONG A BOUNDARY SHOULD SET UP... DO NOT BELIEVE WHOLESALE FFA IS WARRANTED FOR N PTN OF FA. IN BROADER PICTURE... UPPER FLOW BCMG MORE NLY OVR NCNTRL TX AND S/W THAT SPC IS THINKING ABOUT LEADING W/ BOX ATTM (IN OK) IS PROGGED TO PUSH SWD ALL THE WAY INTO SE TX BY ABOUT 20 HOURS. HENCE WILL JUST HAVE ANOTHER DETAIL TO EXACERBATE THE SITUATION. I HAVE GENERALLY GONE WITH DOUBLE BARRELED PCPN THREAT IN AVN FORECASTS DUE TO THIS SCENARIO... WITH AFTN/EVE CONVECTION FOLLOWED IN ANOTHER BOUT IN WEE HOURS. ATMOS GRADUALLY DRYING OUT AFT MON AFTN... ALTHOUGH PESKY H5 TROF AND STALLED OUT SFC FNT TAKING UP RESIDENCE INTO MID WEEK OVR RGN... AND DESTABILIZING EFFECTS WILL WARRANT SOME MENTION OF PCPN POTENTIAL. PRELIMINARIES... CLL 75/96 74/97 5432 IAH 74/90 74/93 5532 GLS 76/90 78/91 5532 38
In the hours before
Local storm report, Aug 11, 2:48 PM CDT, 3 hours 54 minutes before
PRELIMINARY LOCAL STORM REPORT...FOR SAT AUG 10 1996 STORMS
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON
244 PM CDT SUN AUG 11 1996
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0644 PM TOMBALL TX 58 MPH TSTM GUST
08/10/96 HARRIS SPOTTER REPORTED 50 KNOT
WINDS.
0825 PM HOUSTON TX WIND DAMAGE
08/10/96 HARRIS HOUSTON EOC REPORTED TREES
BLOWN DOWN. KEY MAP
LOCATION 374M.
0830 PM HOUSTON TX WIND DAMAGE
08/10/96 HARRIS HOUSTON EOC REPORTED TREES
BLOWN DOWN. KEY MAP
LOCATION 453W.
0833 PM HOUSTON TX WIND DAMAGE
08/10/96 HARRIS HOUSTON EOC REPORTED TREES
BLOWN DOWN NEAR THE
MEDICAL CENTER AND ALSO AT
4000 S. SHEPPARD AND HWY
59.The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 8:08 PM CDT | Severe Thunderstorm Warning | HGX | Harris | 67 min |
| Aug 11, 4:27 PM CDT | Severe Thunderstorm Warning | HGX | Brazos | 63 min |
| Aug 11, 5:06 PM CDT | Tornado Warning | HGX | Montgomery | 69 min |
| Aug 11, 5:44 PM CDT | Tornado Warning | HGX | Harris, Liberty | 61 min |
| Aug 11, 5:57 PM CDT | Tornado Warning | HGX | Harris | 63 min |
| Aug 11, 6:35 PM CDT | Tornado Warning | HGX | Chambers | 55 min |
| Aug 11, 6:46 PM CDT | Tornado Warning | HGX | Fort Bend | 59 min |
Nearby
Tornado Warnings in Texas, 1996Every tornado warning in 1996Tornadoes in 1996
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.