Alert archive / Texas / Mesoscale Discussions in 2005

Mesoscale Discussion 784

May 8, 20056 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 8, 2005, 6:42 PM CDT for 6 counties in Texas. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
May 8, 2005, 6:42 PM CDT (23:42 UTC)
Expired
May 8, 2005, 8:15 PM CDT
In force
93 min
Issued by
the Storm Prediction Center

Counties Edwards County, TX, Kerr County, TX, Kimble County, TX, Mason County, TX, Real County, TX, San Saba County, TX

The radar

The San Angelo radar (KSJT), 135 km from the middle of the area, began a volume at 23:42 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

Del Rio, TX (KDRT), launched 12:00Z, 11.7 hours before the alert went out and 181 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, Del Rio, TX at 12:00Z on 2005-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2453 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, Del Rio, TX at 12:00Z on 2005-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 square meters per square second.19395878Sfc1 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
2453 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
220 m²/s²
Significant tornado parameter
2.8
Supercell composite
10.8

Open this sounding in Storm Lab

The text

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

000 
ACUS11 KWNS 082343
SWOMCD
SPC MCD 082342 
TXZ000-090115-

MESOSCALE DISCUSSION 0784
NWS STORM PREDICTION CENTER NORMAN OK
0642 PM CDT SUN MAY 08 2005

AREAS AFFECTED...TX HILL COUNTRY

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 082342Z - 090115Z

LARGE HAIL/DAMAGING WIND THREAT WILL PERSIST UNTIL ABOUT 01Z ACROSS
THE HILL COUNTRY...BUT LIMITED TEMPORAL/SPATIAL NATURE OF THREAT
WILL PRECLUDE AN ADDITIONAL WW.

WWD MOVING OUTFLOW FROM SE TX MCS WILL COLLIDE WITH SURFACE
TROUGH/DRYLINE ACROSS THE HILL COUNTRY IN THE NEXT 1-2 HOURS IN THE
AREA NE THROUGH S OF JCT.  A NARROW CORRIDOR OF STRONG INSTABILITY
HAS BEEN MAINTAINED BETWEEN THESE TWO BOUNDARIES...WHERE THE THREAT
FOR LARGE HAIL/DAMAGING WINDS WILL PERSIST WITH SUPERCELLS. 
HOWEVER...THE SEVERE THREAT IS EXPECTED TO DIMINISH BY ABOUT 01Z AS
THE COOL/RELATIVELY STABLE OUTFLOW AIR MASS OVERTAKES THE STALLED
DRYLINE/TROUGH FROM THE E.

..THOMPSON.. 05/08/2005

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...EWX...SJT...

30699978 31129950 31289897 31109857 30849857 30339908
29529966 29660022 29960039 30359995

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 7:10 PM CDTSevere Thunderstorm WatchSPCCoke, Crockett, Fisher, Glasscock, Howard, Irion and 13 more7 hr
May 7, 8:51 PM CDTMesoscale DiscussionSPCChildress, Collingsworth, Cottle, Dickens, Donley, Foard and 9 more54 min
May 7, 11:41 PM CDTMesoscale DiscussionSPCCallahan, Coke, Coleman, Concho, Crockett, Eastland and 13 more94 min
May 8, 1:22 AM CDTMesoscale DiscussionSPCConcho, Edwards, Kerr, Kimble, McCulloch, Mason and 6 more53 min
May 8, 1:50 AM CDTSevere Thunderstorm WatchSPCBandera, Crockett, Edwards, Gillespie, Kerr, Kimble and 11 more7 hr
May 8, 4:59 AM CDTMesoscale DiscussionSPCBandera, Edwards, Gillespie, Hamilton, Kerr, Kimble and 6 more61 min
May 8, 5:45 AM CDTSevere Thunderstorm WatchSPCAnderson, Austin, Bandera, Bastrop, Bell, Bexar and 50 more6 hr
May 8, 7:34 AM CDTMesoscale DiscussionSPCAnderson, Bandera, Bastrop, Blanco, Brazos, Burleson and 19 more56 min
May 8, 8:37 AM CDTMesoscale DiscussionSPCAngelina, Gregg, Harrison, Nacogdoches, Panola, Polk and 6 more53 min
May 8, 11:26 AM CDTMesoscale DiscussionSPCAtascosa, Austin, Bee, Bexar, Brazoria, Caldwell and 25 more64 min
May 8, 11:50 AM CDTTornado WatchSPCAtascosa, Austin, Bandera, Bee, Bexar, Brazoria and 33 more7 hr
May 8, 1:06 PM CDTMesoscale DiscussionSPCBandera, Baylor, Borden, Brown, Callahan, Childress and 44 more114 min
May 8, 2:05 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Brown, Callahan, Clay, Coke and 22 more7 hr
May 8, 2:44 PM CDTMesoscale DiscussionSPCAtascosa, Austin, Bee, Brazoria, Colorado, DeWitt and 20 more2 hr
May 8, 3:54 PM CDTMesoscale DiscussionSPCChambers, Hardin, Jasper, Jefferson, Liberty, Montgomery and 8 more96 min
May 8, 5:39 PM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Jack, Montague and 4 more96 min
May 8, 6:00 PM CDTSevere Thunderstorm WatchSPCAransas, Brooks, Duval, Jim Hogg, Jim Wells, Kenedy and 3 more5 hr

Nearby

Mesoscale Discussions in Texas, 2005Every mesoscale discussion in 2005

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.