Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 20, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at May 10, 1999, 10:16 PM CDT for Kenedy County, Texas. It was in force for 59 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 10, 1999, 10:16 PM CDT (03:16 UTC)
- Expired
- May 10, 1999, 11:15 PM CDT
- In force
- 59 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties
County Kenedy County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 10, 10:32 PM CDT | Thunderstorm Wind | Norias, TX | Trees and highway signs blown down. |
| May 10, 10:55 PM CDT | Hail 2.75 | Norias, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 10, 8:45 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 00:00Z, 3.3 hours before the alert went out and 117 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
- 3707 J/kg
- Mixed-layer CIN
- -199 J/kg
- Mixed-layer LCL
- 874 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Brownsville, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 8:30 PM CDT, 1 hour 46 minutes earlier.
Area forecast discussion, May 10, 8:30 PM CDT, 1 hour 46 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 830 PM CDT MON MAY 10 1999 BRO SOUNDING THIS EVENING INDCTS A PRECIP WATER OF 1.81 WITH A L.I. OF A -11 WHICH INDCTS VERY UNSTABLE AND MOIST AIR OVER DEEP SOUTH TEXAS. THE 18Z RUC INDCTS AN AREA OF PVA MOVING INTO DEEP SOUTH TEXAS THIS EVENING WITH MAX PVA CENTER OF 15 WHICH IS PRETTY STRONG FOR THIS TIME OF YEAR. BROWNSVILLE DOPPLER RADAR INDCTS SOME SHOWERS AND TSTMS OVER NORTHERN PORTION OF DEEP SOUTH TEXAS RAPIDLY MOVING TO THE SOUTHEAST. WILL PUT POPS IN THE FORECAST FOR TONIGHT WITH THE MENTION OF POSSIBLE SEVERE TSTMS. OTHER THEN THAT THE REMAINDER OF THE FORECAST LOOKS GOOD AT THIS TIME. 55
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 9:20 PM CDT | Severe Thunderstorm Warning | BRO | Brooks, Kenedy | 55 min |
| May 10, 11:00 PM CDT | Tornado Warning | BRO | Kenedy, Willacy | 45 min |
| May 10, 11:45 PM CDT | Severe Thunderstorm Warning | BRO | Willacy | 30 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.