Alert archive / Texas / Mesoscale Discussions in 2010

Mesoscale Discussion 710

May 25, 2010Morton County, Stevens County, Kansas; Cimarron County, Texas County, Oklahoma; 15 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 25, 2010, 2:21 PM CDT for Morton County, Stevens County, Kansas; Cimarron County, Texas County, Oklahoma; 15 counties in Texas. It was in force for 54 min.

The area

The outline as issued.

The facts

Issued: May 25, 2010, 2:21 PM CDT (19:21 UTC)
Expired: May 25, 2010, 3:15 PM CDT
In force: 54 min
Issued by: the Storm Prediction Center

Counties Morton County, KS, Stevens County, KS, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Carson County, TX, Castro County, TX, Dallam County, TX, Deaf Smith County, TX, Hansford County, TX, Hartley County, TX, Hutchinson County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Sherman County, TX, Swisher County, TX

The radar

The Amarillo radar (KAMA), 56 km from the middle of the area, began a volume at 19:25 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 222May 25, 3:05 PM CDT

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.4 hours before the alert went out and 57 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1971 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 607 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

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

228 
ACUS11 KWNS 251922
SWOMCD
SPC MCD 251921
OKZ000-TXZ000-KSZ000-COZ000-252015-

MESOSCALE DISCUSSION 0710
NWS STORM PREDICTION CENTER NORMAN OK
0221 PM CDT TUE MAY 25 2010

AREAS AFFECTED...SERN CO/SWRN KS/TX AND OK PANHANDLES

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 251921Z - 252015Z

ISOLATED SEVERE THUNDERSTORMS CAPABLE PRIMARILY OF LARGE HAIL AND
DMGG WINDS WILL DEVELOP THIS AFTERNOON. AREA IS BEING MONITORED FOR
A POSSIBLE WW.

CU FIELD IS BEGINNING TO BECOME AGITATED ALONG THE DRYLINE FROM NEAR
ELKHART KS SWD INTO DALHART TX AND JUST EAST OF CLOVIS NM. MODEST
HEATING HAS OCCURRED THIS AFTERNOON AS MUCH OF THE NOW THINNING
CLOUD COVER HAS REMAINED EAST OF THE DRYLINE. MODIFIED 12Z SOUNDINGS
INDICATE A FEW MORE DEGREES OF WARMING IS NECESSARY TO OVERCOME
REMAINING CONVECTIVE INHIBITION...ALTHOUGH PORTIONS OF SERN CO/SWRN
KS MAY CURRENTLY BE UNINHIBITED...AND LIGHTNING HAS RECENTLY BEEN
OBSERVED WITH A CELL FORMING IN BACA COUNTY CO. ALTHOUGH STRONGER
FORCING IS WELL NORTH OF THE AREA...A WEAK WAVE OBSERVED ON WV
IMAGERY NEAR THE SRN AZ/NM BORDER IS QUICKLY PROGRESSING NEWD...AND
MAY PROVIDE SUBTLE/WEAK UPPER FORCING FOR AN INCREASE IN CONVECTION
THIS AFTERNOON/EVENING. AREA VAD WIND PROFILE DATA SHOWS RELATIVELY
WEAK LOW LEVEL WINDS...THOUGH SOME VEERING WITH HEIGHT AND MODEST
MID LEVEL WINDS /35 TO 45 KT/ MAY SUPPORT BRIEFLY ROTATING STORMS
CAPABLE PRIMARILY OF LARGE HAIL AND DMGG WINDS.

..HURLBUT.. 05/25/2010

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

ATTN...WFO...DDC...LUB...AMA...PUB...

LAT...LON   35270102 34280131 34150256 34960293 36270268 37340235
            37480141 36610063 35270102

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 24, 7:17 PM CDT	Severe Thunderstorm Watch	SPC	Barber, Barton, Clark, Comanche, Decatur, Edwards and 34 more	6 hr
May 24, 9:11 PM CDT	Mesoscale Discussion	SPC	Barber, Barton, Butler, Clay, Cloud, Cowley and 29 more	64 min
May 24, 10:26 PM CDT	Mesoscale Discussion	SPC	Butler, Chase, Clay, Coffey, Cowley, Dickinson and 15 more	64 min
May 25, 3:01 PM CDT	Severe Thunderstorm Watch	SPC	Ellis, Finney, Gove, Grant, Greeley, Hamilton and 16 more	7 hr
May 25, 6:11 PM CDT	Mesoscale Discussion	SPC	Grant, Greeley, Hamilton, Kearny, Logan, Morton and 7 more	2 hr
May 24, 9:50 PM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beaver, Beckham, Dewey, Ellis, Harper and 4 more	4 hr
May 25, 1:07 AM CDT	Mesoscale Discussion	SPC	Dewey, Ellis, Roger Mills, Woodward	83 min
May 25, 3:23 AM CDT	Mesoscale Discussion	SPC	Dimmit, Frio, La Salle, Maverick, Medina, Uvalde and 2 more	97 min
May 25, 7:29 AM CDT	Mesoscale Discussion	SPC	Aransas, Atascosa, Bee, Duval, Frio, Goliad and 9 more	61 min

Nearby

Mesoscale Discussions in Texas, 2010 Mesoscale Discussions in Kansas, 2010 Mesoscale Discussions in Oklahoma, 2010 Every mesoscale discussion in 2010

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.