Alert archive / Texas / Tornado Watches in 1999
Tornado Watch 73
The Storm Prediction Center issued this tornado watch at Mar 5, 1999, 7:00 PM CST for 6 counties in Arkansas; 10 parishes in Louisiana; 14 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 5, 1999, 7:00 PM CST (01:00 UTC)
- Expired
- Mar 6, 1999, 1:00 AM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Ashley County, AR, Bradley County, AR, Columbia County, AR, Lafayette County, AR, Miller County, AR, Union County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Red River Parish, LA, Union Parish, LA, Webster Parish, LA, Bowie County, TX, Camp County, TX, Cass County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Marion County, TX, Morris County, TX, Panola County, TX, Rusk County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Wood County, TX
The radar
The Shreveport radar (KSHV), 44 km from the middle of the area, began a volume at 01:00 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.
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 5, 7:29 PM CST | Tornado Warning | SHV | Upshur | 46 min |
| Mar 5, 8:00 PM CST | Tornado Warning | SHV | Gregg | 35 min |
| Mar 5, 8:14 PM CST | Severe Thunderstorm Warning | SHV | Smith | 61 min |
| Mar 5, 8:22 PM CST | Tornado Warning | SHV | Harrison | 63 min |
| Mar 5, 8:48 PM CST | Severe Thunderstorm Warning | SHV | Cherokee, Rusk | 62 min |
| Mar 5, 9:11 PM CST | Severe Thunderstorm Warning | SHV | Panola | 64 min |
| Mar 5, 9:54 PM CST | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 61 min |
| Mar 5, 11:22 PM CST | Severe Thunderstorm Warning | SHV | De Soto | 33 min |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 1.0 hours before the alert went out and 51 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
- 859 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 753 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 158 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.9
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 5, 8:45 PM CST | Severe Thunderstorm Watch | SPC | Arkansas, Ashley, Chicot, Craighead, Crittenden, Cross and 9 more | 5 hr |
Nearby
Tornado Watches in Texas, 1999Tornado Watches in Louisiana, 1999Tornado Watches in Arkansas, 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.