Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 2160

August 16, 200310 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Aug 16, 2003, 3:28 AM CDT for 10 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 16, 2003, 3:28 AM CDT (08:28 UTC)
Expired
Aug 16, 2003, 5:30 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Brooks County, TX, Cameron County, TX, Duval 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 Brownsville radar (KBRO), 144 km from the middle of the area, began a volume at 08:28 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, 8.5 hours before the alert went out and 147 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 2003-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1727 joules per kilogram.LCLEL10008507005003002001001 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 2003-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 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
1727 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
901 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 15, 8:31 PM CDTMesoscale DiscussionSPCAransas, Brooks, Cameron, Duval, Hidalgo, Jim Hogg and 7 more119 min
Aug 15, 9:40 PM CDTTornado WatchSPCBrooks, Cameron, Duval, Hidalgo, Jim Hogg, Kenedy and 4 more9 hr

Nearby

Mesoscale Discussions in Texas, 2003Every mesoscale discussion in 2003

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.