Alert archive / Texas / Tornado Warnings in 1993
Tornado Warning 9, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this tornado warning at May 9, 1993, 11:13 PM CDT for San Jacinto County, Texas. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- May 9, 1993, 11:13 PM CDT (04:13 UTC)
- Expired
- May 10, 1993, 12:15 AM CDT
- In force
- 62 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties
County San Jacinto County, TX
The radar
The Houston radar (KHGX), 124 km from the middle of the area, began a volume at 04:12 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 00:00Z, 4.2 hours before the alert went out and 196 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
- 2027 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 818 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KHOU 100415 TORHOU TXC407-100515- BULLETIN - EBS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE HOUSTON TX 1113 PM CDT SUN MAY 9 1993 THE NATIONAL WEATHER SERVICE IN HOUSTON HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 1215 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION...... IN SOUTHEAST TEXAS ...SAN JACINTO COUNTY AT 1113 PM CDT... RADAR INDICATED A SEVERE THUNDERSTORM WITH A POSIBLE TORNADO EAST OF CUT AND SHOOT HEADED INTO EXTREME SOUTHERN SAN JACINTO COUNTY. MOVEMENT WAS EAST AT ABOUT 2O MPH. THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF AVAILABLE. OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT. IF YOU LIVE IN A HOME OR APARTMENT...SEEK SHELTER IN THE INNERMOST PORTION OF THE BUILDING ON THE LOWEST FLOOR. GET TO A BASEMENT IF ONE IS AVAILABLE. AVOID WINDOWS AND PROTECT YOUR BODY FROM FLYING DEBRIS WITH CUSHIONS...BLANKETS...OR PILLOWS.
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.
In the hours before
Special weather statement, May 9, 8:48 PM CDT, 2 hours 25 minutes before
TXZ048-511-513-100500- SPECIAL WEATHER AND MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE GALVESTON TX 845 PM CDT SUN MAY 9 1993 ...TORNADO WATCH IN EFFECT UNTIL 1 AM MONDAY MORNING... THUNDERSTORMS ARE HEADING FOR THE TEXAS COASTAL SECTIONS. AT 830 PM STRON THUNDERSTORMS WERE LOCATED OVER SOUTHEAST TEXAS FROM LUFKIN TO 30 MILES SOUTHEAST OF AUSTIN. THESE STORMS SHOULD REACH THE GALVESTON AREA LATE TONIGHT OR EARLY MONDAY MORNING. THERE WERE REPORTS OF FUNNEL CLOUDS EARLIER THIS EVENING FROM THESE STORMS. ALL INTERESTS IN THE GALVESTON BAY AREA ARE URGED TO STAY ABREAST OF THE LATEST DEVELOPMENTS OF THIS POTENTIALLY SEVERE SITUATION. MARINERS SHOULD EVALUATE THEIR MOORING OR ANCHORING SITUATIONS. AREA RESIDENTS LIVING NEAR CANALS OR ALONG THE SHORES OF THE BAY OR GULF ARE ADVISED TO CONSIDER PROTECTING PROPERTY FROM MINOR TIDAL FLOODING. STAY TUNED TO NOAA WEATHERR RADIO FOR LATER UPDATES.
Special weather statement, May 9, 8:54 PM CDT, 2 hours 19 minutes before
TXZ048-511-513-100500- SPECIAL AND MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE GALVESTON TX 845 PM CDT SUN MAY 9 1993 ...TORNADO WATCH IN EFFECT UNTIL 1 AM MONDAY MORNING... THUNDERSTORMS ARE HEADING FOR THE TEXAS COASTAL SECTIONS. AT 830 PM STRON THUNDERSTORMS WERE LOCATED OVER SOUTHEAST TEXAS FROM LUFKIN TO 30 MILES SOUTHEAST OF AUSTIN. THESE STORMS SHOULD REACH THE GALVESTON AREA LATE TONIGHT OR EARLY MONDAY MORNING. THERE WERE REPORTS OF FUNNEL CLOUDS EARLIER THIS EVENING FROM THESE STORMS. ALL INTERESTS IN THE GALVESTON BAY AREA ARE URGED TO STAY ABREAST OF THE LATEST DEVELOPMENTS OF THIS POTENTIALLY SEVERE SITUATION. MARINERS SHOULD EVALUATE THEIR MOORING OR ANCHORING| SITUATIONS. AREA RESIDENTS LIVING NEAR CANALS OR ALONG THE SHORES OF THE BAY OR GULF ARE ADVISED TO CONSIDER PROTECTING PROPERTY FROM MINOR TIDAL FLOODING. STAY TUNED TO NOAA WEATHER RADIO FOR LATER UPDATES.
Special weather statement, May 9, 8:58 PM CDT, 2 hours 15 minutes before
TXZ048-511-513-100500- SPECIAL AND MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE GALVESTON TX 845 PM CDT SUN MAY 9 1993 ...TORNADO WATCH IN EFFECT UNTIL 1 AM MONDAY MORNING... THUNDERSTORMS ARE HEADING FOR THE TEXAS COASTAL SECTIONS. AT 830 PM STRON THUNDERSTORMS WERE LOCATED OVER SOUTHEAST TEXAS FROM LUFKIN TO 30 MILES SOUTHEAST OF AUSTIN. THESE STORMS SHOULD REACH THE GALVESTON AREA LATE TONIGHT OR EARLY MONDAY MORNING. THERE WERE REPORTS OF FUNNEL CLOUDS EARLIER THIS EVENING FROM THESE STORMS. ALL INTERESTS IN THE GALVESTON BAY AREA ARE URGED TO STAY ABREAST OF THE LATEST DEVELOPMENTS OF THIS POTENTIALLY SEVERE SITUATION. MARINERS SHOULD EVALUATE THEIR MOORING OR ANCHORING SITUATIONS. AREA RESIDENTS LIVING NEAR CANALS OR ALONG THE SHORES OF THE BAY OR GULF ARE ADVISED TO CONSIDER PROTECTING PROPERTY FROM MINOR TIDAL FLOODING. STAY TUNED TO NOAA WEATHER RADIO FOR LATER UPDATES.
Special weather statement, May 9, 9:05 PM CDT, 2 hours 8 minutes before
TXZ048-511-513-100500- SPECIAL AND MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE GALVESTON TX 845 PM CDT SUN MAY 9 1993 ...TORNADO WATCH IN EFFECT UNTIL 1 AM MONDAY MORNING... THUNDERSTORMS ARE HEADING FOR THE TEXAS COASTAL SECTIONS. AT 830 PM STRONG THUNDERSTORMS WERE LOCATED OVER SOUTHEAST TEXAS FROM LUFKIN TO 30 MILES SOUTHEAST OF AUSTIN. THESE STORMS SHOULD REACH THE GALVESTON AREA LATE TONIGHT OR EARLY MONDAY MORNING. THERE WERE REPORTS OF FUNNEL CLOUDS EARLIER THIS EVENING FROM THESE STORMS. ALL INTERESTS IN THE GALVESTON BAY AREA ARE URGED TO STAY ABREAST OF THE LATEST DEVELOPMENTS OF THIS POTENTIALLY SEVERE SITUATION. MARINERS SHOULD EVALUATE THEIR MOORING OR ANCHORING SITUATIONS. AREA RESIDENTS LIVING NEAR CANALS OR ALONG THE SHORES OF THE BAY OR GULF ARE ADVISED TO CONSIDER PROTECTING PROPERTY FROM MINOR TIDAL FLOODING. STAY TUNED TO NOAA WEATHER RADIO FOR LATER UPDATES.
Special weather statement, May 9, 9:25 PM CDT, 1 hour 48 minutes before
TXZ047-049-037-032-046-045-100330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 925 PM CDT SUN MAY 9 1993 ...A TORNADO WATCH CONTINUES FOR MOST OF SOUTHEAST TEXAS UNTIL 100 AM CDT... ...THE SEVERE THUNDERSTORM WARNING FOR GRIMES COIUNTY EXPIRED AT 900 PM CDT... ...A FLASH FLOOD WATCH REMIANS IN EFFECT TONIGHT FOR HOUSTON AND TRINITY COUNTIES... AT 915 PM CDT... AN AREA OF STRONG TO SEVERE THUNDERSTORMS CONTINUED FROM LUFKIN... TO NEAR HUNTSVILLE... TO SOUTH OF SAN ANTONIO. THESE STORMS PRODUCED WINDS OF 50 MPH AT A RADIO STATION IN HUNTSVILLE AS THE LEADING EDGE OF THE STORMS MOVED THROUGH THAT AREA AROUND 850 PM. SEVERAL OF THESE STORMS MAY YET PRODUCE LARGE HAIL AND HIGH WINDS... AND TORNADOES WILL STILL BE POSSIBLE WITH THESE SOTRMS AS THEY MOVE ACROSS SOUTHEAST TEXAS DURING THE NEXT SEVERAL HOURS. ADDITIONALLY... NEW STORMS WERE DEVELOPING IN THE LEAGUE CITY AREA AND OVER PARTS OF LIBERTY AND HARDIN COUNTIES. STAY TUNED TO NOAA WEATHER RADIO OR OTHER PUBLIC MEDIA SOURCES FOR LATER UPDATES AND POSSIBLE WARNINGS.
Special weather statement, May 9, 9:27 PM CDT, 1 hour 46 minutes before
TXZ047-049-037-032-046-045-100330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON TX 925 PM CDT SUN MAY 9 1993 ...A TORNADO WATCH CONTINUES FOR MOST OF SOUTHEAST TEXAS UNTIL 100 AM CDT... ...THE SEVERE THUNDERSTORM WARNING FOR GRIMES COIUNTY EXPIRED AT 900 PM CDT... ...A FLASH FLOOD WATCH REMIANS IN EFFECT TONIGHT FOR HOUSTON AND TRINITY COUNTIES... AT 915 PM CDT... AN AREA OF STRONG TO SEVERE THUNDERSTORMS CONTINUED FROM LUFKIN... TO NEAR HUNTSVILLE... TO SOUTH OF SAN ANTONIO. THESE STORMS PRODUCED WINDS OF 50 MPH AT A RADIO STATION IN HUNTSVILLE AS THE LEADING EDGE OF THE STORMS MOVED THROUGH THAT AREA AROUND 850 PM. SEVERAL OF THESE STORMS MAY YET PRODUCE LARGE HAIL AND HIGH WINDS... AND TORNADOES WILL STILL BE POSSIBLE WITH THESE SOTRMS AS THEY MOVE ACROSS SOUTHEAST TEXAS DURING THE NEXT SEVERAL HOURS. ADDITIONALLY... NEW STORMS WERE DEVELOPING IN THE LEAGUE CITY AREA AND OVER PARTS OF LIBERTY AND HARDI*N COUNTIES. STAY TUNED TO NOAA WEATHER RADIO OR OTHER PUBLIC MEDIA SOURCES FOR LATER UPDATES AND POSSIBLE WARNINGS.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 8:00 PM CDT | Severe Thunderstorm Warning | HGX | Grimes | 60 min |
| May 9, 9:39 PM CDT | Severe Thunderstorm Warning | HGX | Montgomery, Waller | 66 min |
| May 9, 9:51 PM CDT | Tornado Warning | HGX | Harris | 69 min |
| May 9, 10:40 PM CDT | Severe Thunderstorm Warning | HGX | Harris, Montgomery | 65 min |
| May 9, 10:43 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Wharton | 62 min |
| May 9, 10:43 PM CDT | Severe Thunderstorm Warning | HGX | Waller | 62 min |
| May 9, 10:52 PM CDT | Severe Thunderstorm Warning | HGX | Liberty | 68 min |
| May 9, 11:42 PM CDT | Severe Thunderstorm Warning | HGX | Brazoria, Matagorda | 63 min |
| May 9, 11:49 PM CDT | Severe Thunderstorm Warning | HGX | Fort Bend, Wharton | 56 min |
| May 10, 12:44 AM CDT | Severe Thunderstorm Warning | HGX | Brazoria | 31 min |
| May 10, 12:45 AM CDT | Severe Thunderstorm Warning | HGX | Chambers, Galveston | 75 min |
Nearby
Tornado Warnings in Texas, 1993Every tornado warning in 1993Tornadoes in 1993
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.