Alert archive / Texas / Mesoscale Discussions in 2016

Mesoscale Discussion 784

May 29, 201634 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 29, 2016, 9:27 PM CDT for 34 counties in Texas. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 29, 2016, 9:27 PM CDT (02:27 UTC)
Expired
May 29, 2016, 11:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 34 counties

Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Jones County, TX, Kimble County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Montague County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sutton County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wise County, TX, Young County, TX

The radar

The Dyess AFB radar (KDYX), 37 km from the middle of the area, began a volume at 02:28 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

Fort Worth, TX (KFWD), launched 00:00Z, 2.5 hours before the alert went out and 212 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, Fort Worth, TX at 00:00Z on 2016-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1610 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, Fort Worth, TX at 00:00Z on 2016-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
1610 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1577 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.1

Open this sounding in Storm Lab

The text

As transmitted.

854 
ACUS11 KWNS 300227
SWOMCD
SPC MCD 300227 
TXZ000-300430-

MESOSCALE DISCUSSION 0784
NWS STORM PREDICTION CENTER NORMAN OK
0927 PM CDT SUN MAY 29 2016

AREAS AFFECTED...NWRN INTO CNTRL TX

CONCERNING...SEVERE THUNDERSTORM WATCH 229...

VALID 300227Z - 300430Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 229
CONTINUES.

SUMMARY...THE THREAT OF LOCALLY DAMAGING WINDS AND HAIL CONTINUES
ACROSS THE WATCH AREA.

DISCUSSION...CLUSTER OF STORMS...NOW UNDERCUT BY A SURGING
OUTFLOW...CONTINUE TO EVOLVE AS EXPECTED...PROPAGATING IN A SSEWD
DIRECTION IN THE DIRECTION OF UPSTREAM CU DEVELOPMENT SEEN ON
VISIBLE IMAGERY PRIOR TO SUNSET. STORM RELATIVE INFLOW INTO THIS
CLUSTER OF STORMS IS ALSO INCREASING PER DYX VAD WINDS...AND SFC
ANALYSIS SHOWS MID TO UPPER 60S F DEWPOINTS JUST DOWNSTREAM AS WELL
WHICH MAY LEAD TO AN ENHANCEMENT OF STORM CORES LATER THIS EVENING.

..JEWELL.. 05/30/2016

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

ATTN...WFO...FWD...OUN...EWX...SJT...MAF...

LAT...LON   32790056 32849995 33059943 33429902 33719846 33789831
            33769752 32249772 31149830 30409913 30300020 30330074
            31060092 32020074 32790056

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 29, 7:05 PM CDTMesoscale DiscussionSPCAndrews, Borden, Brewster, Crane, Crockett, Dawson and 22 more85 min
May 29, 7:10 PM CDTSevere Thunderstorm WatchSPCBell, Bosque, Brown, Callahan, Coke, Coleman and 35 more9 hr
May 29, 11:52 PM CDTMesoscale DiscussionSPCBosque, Brown, Callahan, Coleman, Comanche, Concho and 18 more83 min
May 30, 9:41 AM CDTMesoscale DiscussionSPCJackson, Lavaca, Victoria64 min
May 30, 2:28 PM CDTMesoscale DiscussionSPCAndrews, Brewster, Crane, Crockett, Culberson, Ector and 12 more2 hr
May 30, 5:49 PM CDTMesoscale DiscussionSPCBorden, Brown, Callahan, Coke, Coleman, Comanche and 15 more2 hr
May 30, 6:54 PM CDTSevere Thunderstorm WatchSPCBorden, Brown, Callahan, Coke, Coleman, Dawson and 15 more5 hr

Nearby

Mesoscale Discussions in Texas, 2016Every mesoscale discussion in 2016

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.