Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 21, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Apr 13, 1999, 1:58 PM CDT for Oldham County, Texas. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Apr 13, 1999, 1:58 PM CDT (18:58 UTC)
- Expired
- Apr 13, 1999, 3:00 PM CDT
- In force
- 62 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Oldham County, TX
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 7.0 hours before the alert went out and 69 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
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KAMA 131900 RRA SVRAMA TXC359-132000- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 158 PM CDT TUE APR 13 1999 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN OLDHAM COUNTY IN THE TEXAS PANHANDLE * UNTIL 300 PM CDT * AT 158 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 12 MILES WEST-SOUTHWEST OF VEGA...MOVING NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... VEGA AT 210 PM CDT BOYS RANCH AT 240 PM CDT IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER AND STAY AWAY FROM WINDOWS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 55 MPH... DEADLY LIGHTNING...AND VERY HEAVY RAIN. LAT...LON 3519 10275 3518 10243 3529 10216 3565 10220
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 10:28 AM CDT | Severe Thunderstorm Warning | AMA | Hutchinson, Moore | 47 min |
| Apr 13, 11:02 AM CDT | Severe Thunderstorm Warning | AMA | Hansford | 28 min |
| Apr 13, 11:14 AM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith | 46 min |
| Apr 13, 11:34 AM CDT | Severe Thunderstorm Warning | AMA | Ochiltree | 56 min |
| Apr 13, 11:49 AM CDT | Severe Thunderstorm Warning | AMA | Oldham | 41 min |
| Apr 13, 12:00 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb | 45 min |
| Apr 13, 2:13 PM CDT | Tornado Warning | AMA | Oldham | 32 min |
| Apr 13, 2:39 PM CDT | Severe Thunderstorm Warning | AMA | Potter | 66 min |
| Apr 13, 2:52 PM CDT | Tornado Warning | AMA | Potter | 23 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, 6:10 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth | 50 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1999Every severe thunderstorm warning 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.