Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 105, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jun 28, 2001, 6:00 PM CDT for Harris County, Texas. It was in force for 60 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 28, 2001, 6:00 PM CDT (23:00 UTC)
- Expired
- Jun 28, 2001, 7:00 PM CDT
- In force
- 60 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Harris County, TX
The radar
The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 23:00 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 28, 6:30 PM CDT | Hail 0.88 | Houston, TX | Nickel size hail across the eastern portion of the county. |
| Jun 28, 6:30 PM CDT | Thunderstorm Wind | Houston, TX | Trees down across the eastern portion of the county. |
| Jun 28, 6:32 PM CDT | Hail 0.75 | Crosby, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.0 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
- 2349 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 647 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.3
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 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 Jun 28, 2:45 PM CDT, 3 hours 15 minutes earlier.
Area forecast discussion, Jun 28, 2:45 PM CDT, 3 hours 15 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 245 PM CDT THU JUN 28 2001 ISOLATED SHOWERS AND THUNDERSTORMS POPPING OVER THE NERN 1/3 OF THE CWA EARLY THIS AFTERNOON. THE MAIN FORECAST ISSUES ARE POPS AND SEVERE/HEAVY RAIN THREAT. THE 12Z NCEP MODELS ARE IN FAIR TO GOOD AGREEMENT...BUT NONE ARE PREFERRED DUE TO MESOSCALE NATURE OF CONVECTION AND GENERALLY POOR HANDLING OF CUTOFF LOWS SUCH AS THE ONE CURRENTLY AFFECTING THE SRN PLAINS/MS RIVER VALLEY. NO BIG CHANGES PLANNED IN THE ZONES...BUT WILL REMOVE THE WET BIAS OF THE PAST FEW DAYS BY LOWERING POPS IN THE SWRN 1/2 OF THE CWA. ISOLATED SEVERE/HEAVY RAIN THREAT WILL CONTINUE...BUT OVERNIGHT SHIFT PROBABLY BEST TO ISSUE HWO/SPS. OTHERWISE...SAT AND ESPECIALLY SUN LOOKING WETTER THAN FRI OR MON-THU. SIMILARLY...TEMPS MAY BE A BIT COOLER OVER THE WEEKEND...WITH NEAR NORMAL READINGS FOR THE OTHER PERIODS. .HGX...NONE. 31/45/DH PRELIMS... CLL BE 073/093 073/091 072 332 IAH BB 072/092 072/090 072 433 GLS BB 080/088 080/088 080 232
In the hours before
Special weather statement, Jun 28, 3:53 PM CDT, 2 hours 7 minutes before
GMZ335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-290930- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 353 PM CDT THU JUN 28 2001 ...SLIGHT RISK OF ISOLATED SEVERE THUNDERSTORMS THIS EVENING AND FRIDAY AFTERNOON THROUGH EARLY EVENING... SOUTHEAST TEXAS WILL BE UNDER THE INFLUENCE OF MOIST AND UNSTABLE AIRMASS THROUGH THE WEEKEND AS AN UPPER LEVEL LOW PRESSURE SYSTEM OVER ARKANSAS DRIFTS SLOWLY SOUTHWEST. DAYTIME HEATING WILL DRIVE THE DEVELOPMENT OF SHOWERS AND THUNDERSTORMS...SEABREEZE STORMS AND ALSO ALONG THE COOL THUNDERSTORM OUTFLOWS THAT PENETRATE INTO THE REGION FROM THE NORTHEAST. THE THUNDERSTORMS THAT DEVELOP DURING THE LATE AFTERNOON MAY DEVELOP VERY RAPIDLY AND WILL BE STEERED BY VERY WEAK WINDS IN THE LOWER ATMOSPHERE SO THE PRIMARY THREAT OF SEVERE WEATHER WILL BE DAMAGING WINDS ASSOCIATED WITH MICROBURSTS. SMALL HAIL WILL ALSO BE POSSIBLE. IN ADDITION...DUE TO THE ANTICIPATED SLOW MOVEMENT OF THE STORMS THE THREAT OF HEAVY RAIN WILL ALSO BE A THREAT. SEVERE THUNDERSTORMS THESE EVENING WILL PROBABLY BE VERY ISOLATED... A FEW MORE MAY OCCUR FRIDAY AFTERNOON AND EVENING AS THE ATMOSPHERE BECOMES MORE UNSTABLE. THE MAIN THREAT WINDOW WILL BE FROM 2 PM TO 9 PM. ALL OF SOUTHEAST TEXAS HAS A CHANCE FOR SEVERE WEATHER...BUT THE PRIMARY RISK AREA IS ALONG AND NORTHEAST A BRENHAM TO RICHMOND ANGLETON LINE. RAINFALL AMOUNTS WILL AVERAGE 1/4 TO 3/4 INCH...BUT SOME LOCATIONS COULD RECEIVE 3 TO 4 INCHES OF RAIN WITH THE STRONGER...SLOWER MOVING STORMS. STAY TUNED TO NOAA WEATHER RADIO OR OTHER WEATHER NEWS SOURCES FOR FURTHER INFORMATION ON THIS DEVELOPING WEATHER THREAT.
The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 7:09 PM CDT | Severe Thunderstorm Warning | HGX | Montgomery | 51 min |
| Jun 28, 6:24 PM CDT | Tornado Warning | HGX | Harris | 36 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.