Alert archive / Texas / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 346

May 27, 19979 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 27, 1997, 10:45 PM CDT for 9 counties in Texas. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
May 27, 1997, 10:45 PM CDT (03:45 UTC)
Expired
May 28, 1997, 4:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Brooks County, TX, Cameron County, TX, Hidalgo County, TX, Jim Hogg County, TX, Kenedy County, TX, Kleberg County, TX, Starr County, TX, Willacy County, TX, Zapata County, TX

The radar

The Corpus Christi radar (KCRP), 140 km from the middle of the area, began a volume at 03:49 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

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 27, 11:20 PM CDTTornado WarningBROJim Hogg55 min
May 27, 11:28 PM CDTSevere Thunderstorm WarningBROBrooks, Jim Hogg62 min
May 27, 11:57 PM CDTSevere Thunderstorm WarningBROStarr63 min
May 28, 12:23 AM CDTSevere Thunderstorm WarningBROBrooks, Hidalgo67 min

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 00:00Z, 3.8 hours before the alert went out and 155 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.

Skew-T log-pSkew-T log-p diagram, Brownsville Intl, TX at 00:00Z on 1997-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4398 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brownsville Intl, TX at 00:00Z on 1997-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
4398 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
706 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
2 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

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.

IssuedProductOfficeCountiesLasted
May 27, 7:00 PM CDTTornado WatchSPCAnderson, Angelina, Brazos, Cherokee, Freestone, Gregg and 20 more6 hr
May 27, 9:00 PM CDTTornado WatchSPCAransas, Atascosa, Bee, Bexar, Calhoun, DeWitt and 25 more6 hr
May 28, 3:30 PM CDTSevere Thunderstorm WatchSPCAustin, Colorado, DeWitt, Fort Bend, Goliad, Jackson and 6 more6 hr
May 28, 5:15 PM CDTTornado WatchSPCAndrews, Armstrong, Bailey, Briscoe, Carson, Castro and 29 more5 hr

Nearby

Severe Thunderstorm Watches in Texas, 1997Every severe thunderstorm watch in 1997

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.