Alert archive / Texas / Tornado Watches in 1999
Tornado Watch 148
The Storm Prediction Center issued this tornado watch at Apr 13, 1999, 2:30 PM CDT for 39 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 13, 1999, 2:30 PM CDT (19:30 UTC)
- Expired
- Apr 13, 1999, 8:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Armstrong County, TX, Bailey County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Cochran County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Deaf Smith County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hartley County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Motley County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Yoakum County, TX
The radar
The Lubbock radar (KLBB), 66 km from the middle of the area, began a volume at 19:33 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
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 2:39 PM CDT | Severe Thunderstorm Warning | AMA | Potter | 66 min |
| Apr 13, 2:42 PM CDT | Severe Thunderstorm Warning | LUB | Bailey, Cochran, Hockley, Lamb | 48 min |
| Apr 13, 2:52 PM CDT | Tornado Warning | AMA | Potter | 23 min |
| Apr 13, 3:00 PM CDT | Tornado Warning | LUB | Lamb | 30 min |
| Apr 13, 3:10 PM CDT | Severe Thunderstorm Warning | AMA | Randall | 50 min |
| Apr 13, 3:41 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Potter | 64 min |
| Apr 13, 3:48 PM CDT | Severe Thunderstorm Warning | AMA | Armstrong, Randall | 57 min |
| Apr 13, 4:53 PM CDT | Severe Thunderstorm Warning | AMA | Gray | 67 min |
| Apr 13, 5:10 PM CDT | Severe Thunderstorm Warning | LUB | Garza | 50 min |
| Apr 13, 5:49 PM CDT | Tornado Warning | LUB | Hall | 26 min |
| Apr 13, 6:10 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth | 50 min |
| Apr 13, 7:17 PM CDT | Severe Thunderstorm Warning | LUB | Garza | 28 min |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 7.5 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
- 173 J/kg
- Mixed-layer CIN
- -133 J/kg
- Mixed-layer LCL
- 741 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 184 m²/s²
- 0-3 km storm-relative helicity
- 138 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 |
|---|---|---|---|---|
| Apr 13, 4:15 PM CDT | Tornado Watch | SPC | Borden, Coke, Crane, Crockett, Dawson, Ector and 17 more | 6 hr |
Nearby
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.