Alert archive / Texas / Tornado Watches in 1999
Tornado Watch 76
The Storm Prediction Center issued this tornado watch at Mar 8, 1999, 12:00 PM CST for 10 parishes in Louisiana; 31 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 8, 1999, 12:00 PM CST (18:00 UTC)
- Expired
- Mar 8, 1999, 6:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Red River Parish, LA, Sabine Parish, LA, Webster Parish, LA, Anderson County, TX, Angelina County, TX, Brazos County, TX, Burleson County, TX, Camp County, TX, Cherokee County, TX, Gregg County, TX, Grimes County, TX, Hardin County, TX, Harrison County, TX, Houston County, TX, Jasper County, TX, Leon County, TX, Madison County, TX, Marion County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Smith County, TX, Trinity County, TX, Tyler County, TX, Upshur County, TX, Walker County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 170 km from the middle of the area, began a volume at 18:01 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
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 12:19 PM CST | Severe Thunderstorm Warning | FWD | Anderson | 41 min |
| Mar 8, 12:40 PM CST | Severe Thunderstorm Warning | SHV | Wood | 50 min |
| Mar 8, 12:47 PM CST | Severe Thunderstorm Warning | SHV | Cherokee | 48 min |
| Mar 8, 1:03 PM CST | Severe Thunderstorm Warning | SHV | Smith | 32 min |
| Mar 8, 1:21 PM CST | Severe Thunderstorm Warning | SHV | Nacogdoches, Rusk | 59 min |
| Mar 8, 2:00 PM CST | Severe Thunderstorm Warning | HGX | Brazos, Burleson, Grimes | 30 min |
| Mar 8, 2:01 PM CST | Severe Thunderstorm Warning | SHV | Panola, Shelby | 59 min |
| Mar 8, 2:16 PM CST | Tornado Warning | HGX | Grimes | 14 min |
| Mar 8, 2:30 PM CST | Severe Thunderstorm Warning | HGX | Grimes, Walker | 45 min |
| Mar 8, 3:13 PM CST | Severe Thunderstorm Warning | HGX | San Jacinto, Walker | 47 min |
| Mar 8, 3:31 PM CST | Severe Thunderstorm Warning | HGX | Polk | 59 min |
| Mar 8, 3:54 PM CST | Severe Thunderstorm Warning | SHV | San Augustine | 46 min |
| Mar 8, 4:18 PM CST | Severe Thunderstorm Warning | LCH | Tyler | 62 min |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 6.0 hours before the alert went out and 178 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
- 891 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 627 m²/s²
- 0-3 km storm-relative helicity
- 864 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.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 5:00 PM CST | Tornado Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Caldwell, Catahoula and 16 more | 6 hr |
| Mar 8, 7:00 AM CST | Severe Thunderstorm Watch | SPC | Bosque, Collin, Comanche, Cooke, Coryell, Dallas and 34 more | 5 hr |
| Mar 8, 3:30 PM CST | Tornado Watch | SPC | Bowie, Camp, Cass, Delta, Fannin, Franklin and 6 more | 5 hr |
Nearby
Tornado Watches in Texas, 1999Tornado Watches in Louisiana, 1999Every tornado watch in 1999
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.