Alert archive / Texas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 12, NWS Brownsville, TX
NWS Brownsville, TX issued this severe thunderstorm warning at Mar 27, 1999, 10:00 PM CST for Jim Hogg County, Starr County, Texas. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 27, 1999, 10:00 PM CST (04:00 UTC)
- Expired
- Mar 27, 1999, 11:00 PM CST
- In force
- 60 min
- Issued by
- NWS Brownsville, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Jim Hogg County, TX, Starr County, TX
The radar
The Corpus Christi radar (KCRP), 162 km from the middle of the area, began a volume at 04:04 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.
The nearest sounding before it
Brownsville Intl, TX (KBRO), launched 00:00Z, 4.0 hours before the alert went out and 165 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
- 1929 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 598 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.3
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 Mar 27, 7:45 PM CST, 2 hours 15 minutes earlier.
Area forecast discussion, Mar 27, 7:45 PM CST, 2 hours 15 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE BROWNSVILLE TX 745 PM CST SAT MAR 27 1999 SIGNIFICANT WEATHER UNDERWAY OVER NORTHEAST MEXICO AND DEEP SOUTH TEXAS CAUSED BY UPPER AIR LOW AMBLING SLOWLY NORTHEAST FROM MEXICO..WILL TAPER OFF LATE LATER TONIGHT AS ENERGY MAKING STORMS RACES NORTHEAST. HOWEVER..STORM DEVELOPMENT IS EXPECTED AGAIN TOMORROW BUT STARTING MORE EAST THAN CURRENT POSITION KEEPING WITH LOWS EASTWARD MIGRATION. FORECAST UNDERWAY LOOKS APPROPRIATE WITH 60 POPS TONIGHT AND TOMORROW..POSSIBLY SEVERE STORMS..HEAVY RAINFALL. PRECIP ALGO SUPPORTS THE POPS. BY TOMORROW NIGHT..LAND AREA WILL BE UNDER THE INFLUENCE OF SUBSIDING AIR IN THE LOWS WAKE..GULF OF MEXICO WILL NOT HOWEVER..WHERE STORMY WEATHER WILL DOMINATE. SO FAR..MOST DAMAGE HAS BEEN FROM WIND. .BRO...SCA RIO GRANDE-BAFFIN BAY OUT 50 NM INCLUDING BAYS. GRADIENT IS STILL QUITE STRONG. 62
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 6:02 PM CST | Severe Thunderstorm Warning | BRO | Zapata | 28 min |
| Mar 27, 6:38 PM CST | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 37 min |
| Mar 27, 7:17 PM CST | Severe Thunderstorm Warning | BRO | Hidalgo, Starr | 43 min |
| Mar 27, 8:04 PM CST | Severe Thunderstorm Warning | BRO | Hidalgo | 41 min |
| Mar 27, 8:18 PM CST | Severe Thunderstorm Warning | BRO | Starr, Zapata | 42 min |
| Mar 27, 8:28 PM CST | Tornado Warning | BRO | Hidalgo | 32 min |
| Mar 27, 8:33 PM CST | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo, Kenedy, Willacy | 57 min |
| Mar 27, 9:04 PM CST | Severe Thunderstorm Warning | BRO | Jim Hogg, Starr, Zapata | 56 min |
| Mar 27, 9:54 PM CST | Flash Flood Warning | BRO | Jim Hogg, Starr | 4 hr |
| Mar 27, 10:34 PM CST | Severe Thunderstorm Warning | BRO | Brooks, Hidalgo, Kenedy, Starr | 56 min |
| Mar 27, 10:50 PM CST | Tornado Warning | BRO | Hidalgo | 35 min |
| Mar 27, 11:22 PM CST | Tornado Warning | BRO | Hidalgo | 23 min |
| Mar 27, 11:28 PM CST | Severe Thunderstorm Warning | BRO | Cameron, Hidalgo, Kenedy, Willacy | 62 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; radar from the NEXRAD Level II archive.