Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 60, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 22, 2003, 12:25 PM CDT for Harris County, Montgomery County, Texas. It was in force for 35 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
- Apr 22, 2003, 12:25 PM CDT (17:25 UTC)
- Expired
- Apr 22, 2003, 1:00 PM CDT
- In force
- 35 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Counties, with a storm outline in the text
Counties Harris County, TX, Montgomery County, TX
The radar
The Houston radar (KHGX), 76 km from the middle of the area, began a volume at 17:25 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, 5.4 hours before the alert went out and 216 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1943 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 22, 11:55 AM CDT, 30 minutes earlier.
Area forecast discussion, Apr 22, 11:55 AM CDT, 30 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1155 AM CDT TUE APR 22 2003 HAVE UPDATED THE ZONES TO MENTION SEVERE THUNDERSTORM THREAT ACROSS SOUTHEAST TEXAS FOR THIS AFTERNOON. ALSO UPDATED THE HAZARDOUS WEATHER OUTLOOK. SO FAR...HAVE NOT RECEIVED ANY REPORTS OF SEVERE WEATHER. 42/43/31/30 .HGX...NONE. UPDATED PRELIMS... CLL TT 079/064 076/065 081 525 IAH TT 079/065 077/067 080 525 GLS EE 077/069 077/069 076 324 -------------------------------------------------------------------- .PREVIOUS DISCUSSION (952 PM CDT)... CURRENTLY WATCHING A LINE OF SHOWERS AND THUNDERSTORMS (MORE THAN ANTICIPATED) MOVING INTO OUR NORTHWEST COUNTIES. FORECAST HAS HIGHER POPS UP NORTH AND WILL GO AHEAD AND LEAVE THEM THERE. WILL ADJUST THE POPS DOWN JUST A BIT FOR THE COASTAL COUNTIES AS IT APPEARS GREATEST CONCENTRATION WILL REMAIN UP NORTH. 06Z GFS RUN HAD A MUCH BETTER HANDLE ON THE CURRENT ACTIVITY THAN THE 06Z MESOETA. DO NOT SEE ANY OBVIOUS SHORTWAVES ON WATER VAPOR BEHIND THE CURRENT ONE MOVING THROUGH THE AREA...SO THINK THAT THE BULK OF OUR ACTION WILL OCCUR THE REST OF THIS MORNING AND ON INTO THE EARLY TO MID AFTERNOON HOURS. NO SIGNIFICANT CHANGES MADE TO THE UPDATED PRELIMS BELOW. 42/43/31
Hazardous weather outlook, Apr 22, 11:45 AM CDT, 40 minutes before
GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-231200- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 1145 AM CDT TUE APR 22 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE CENTRAL AND SOUTHERN PORTIONS OF SOUTHEAST TEXAS THIS AFTERNOON. LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THE STRONGER THUNDERSTORMS THAT DO DEVELOP. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. A STORM SYSTEM WILL MOVE ACROSS THE SOUTHERN AND CENTRAL PLAINS WEDNESDAY AND THURSDAY AND IS EXPECTED TO PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE AREA. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS DURING THE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON TIME PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 10:54 AM CDT | Severe Thunderstorm Warning | HGX | Washington | 51 min |
| Apr 22, 11:38 AM CDT | Severe Thunderstorm Warning | HGX | Austin | 37 min |
| Apr 22, 11:58 AM CDT | Severe Thunderstorm Warning | HGX | Waller | 32 min |
| Apr 22, 3:58 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Walker | 47 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm warning in 2003
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.