Alert archive / Texas / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 646
The Storm Prediction Center issued this severe thunderstorm watch at Aug 27, 2002, 10:45 AM CDT for Beauregard Parish, Calcasieu Parish, Cameron Parish, Louisiana; 15 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 2002, 10:45 AM CDT (15:45 UTC)
- Expired
- Aug 27, 2002, 4:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Beauregard Parish, LA, Calcasieu Parish, LA, Cameron Parish, LA, Angelina County, TX, Chambers County, TX, Hardin County, TX, Houston County, TX, Jasper County, TX, Jefferson County, TX, Liberty County, TX, Newton County, TX, Orange County, TX, Polk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Trinity County, TX, Tyler County, TX
The radar
The Lake Charles radar (KLCH), 108 km from the middle of the area, began a volume at 15:45 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 10:51 AM CDT | Severe Thunderstorm Warning | SHV | Angelina, San Augustine | 54 min |
| Aug 27, 10:55 AM CDT | Severe Thunderstorm Warning | LCH | Jasper, Newton, Tyler | 65 min |
| Aug 27, 10:59 AM CDT | Severe Thunderstorm Warning | HGX | Trinity | 76 min |
| Aug 27, 11:11 AM CDT | Severe Thunderstorm Warning | HGX | Polk | 3 hr |
| Aug 27, 11:58 AM CDT | Severe Thunderstorm Warning | LCH | Beauregard | 62 min |
| Aug 27, 12:40 PM CDT | Severe Thunderstorm Warning | LCH | Calcasieu, Cameron | 65 min |
| Aug 27, 12:54 PM CDT | Severe Thunderstorm Warning | LCH | Hardin | 36 min |
| Aug 27, 12:59 PM CDT | Severe Thunderstorm Warning | LCH | Beauregard | 61 min |
| Aug 27, 1:18 PM CDT | Severe Thunderstorm Warning | HGX | Chambers, Liberty | 57 min |
| Aug 27, 1:34 PM CDT | Severe Thunderstorm Warning | LCH | Allen, Calcasieu, Cameron, Jefferson Davis | 56 min |
| Aug 27, 2:18 PM CDT | Severe Thunderstorm Warning | LCH | Cameron, Vermilion | 57 min |
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 3.8 hours before the alert went out and 109 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
- 1402 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 811 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 10:35 PM CDT | Severe Thunderstorm Watch | SPC | Collingsworth, Donley, Gray, Hansford, Hemphill, Hutchinson and 4 more | 5 hr |
| Aug 27, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | Hemphill | 5 hr |
| Aug 27, 3:40 AM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Bosque, Brown, Callahan, Clay and 38 more | 5 hr |
| Aug 27, 6:45 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Angelina, Bowie, Camp, Cass, Cherokee and 24 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2002Severe Thunderstorm Watches in Louisiana, 2002Every severe thunderstorm watch in 2002
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.