Alert archive / Kansas / Mesoscale Discussions in 2011

Mesoscale Discussion 96

February 8, 20114 states

The Storm Prediction Center issued this mesoscale discussion at Feb 8, 2011, 2:50 PM MST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Feb 8, 2011, 2:50 PM MST (21:50 UTC)
Expired: Feb 8, 2011, 7:45 PM MST
In force: 5 hr
Issued by: the Storm Prediction Center

All 82 counties

Baca County, CO, Allen County, KS, Anderson County, KS, Barber County, KS, Barton County, KS, Bourbon County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Clark County, KS, Coffey County, KS, Comanche County, KS, Cowley County, KS, Crawford County, KS, Edwards County, KS, Elk County, KS, Ellsworth County, KS, Finney County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Greenwood County, KS, Hamilton County, KS, Harper County, KS, Harvey County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kingman County, KS, Kiowa County, KS, Labette County, KS, Lane County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Meade County, KS, Montgomery County, KS, Morris County, KS, Morton County, KS, Neosho County, KS, Ness County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Rush County, KS, Saline County, KS, Sedgwick County, KS, Seward County, KS, Stafford County, KS, Stanton County, KS, Stevens County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Alfalfa County, OK, Beaver County, OK, Cimarron County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Major County, OK, Roger Mills County, OK, Texas County, OK, Woods County, OK, Woodward County, OK, Carson County, TX, Dallam County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Roberts County, TX, Sherman County, TX

The radar

The Dodge City radar (KDDC), 93 km from the middle of the area, began a volume at 21:50 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

Dodge City, (KDDC), launched 12:00Z, 9.8 hours before the alert went out and 90 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 0 m above ground
0-6 km bulk shear: 85 kt
0-1 km storm-relative helicity: 505 m²/s²
0-3 km storm-relative helicity: 853 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.

223 
ACUS11 KWNS 082151
SWOMCD
SPC MCD 082150
KSZ000-OKZ000-TXZ000-COZ000-NMZ000-090245-

MESOSCALE DISCUSSION 0096
NWS STORM PREDICTION CENTER NORMAN OK
0350 PM CST TUE FEB 08 2011

AREAS AFFECTED...SRN KS...NWRN OK...OK/NRN TX PANHANDLES...EXTREME
SERN CO

CONCERNING...HEAVY SNOW

VALID 082150Z - 090245Z

HEAVY SNOWFALL RATES OF 1-2 INCHES WILL PERSIST ACROSS MUCH OF SRN
KS...AND EXPAND INTO NWRN OK AND THE OK/NRN TX PANHANDLES THIS
EVENING. LOCALLY REDUCED VISIBILITIES WITH N/NELY WINDS OF 20-30 MPH
WILL OCCUR AT TIMES.

AN ELONGATED BAND OF HEAVY SNOWFALL LOCATED OVER SRN KS HAS REMAINED
NEARLY STATIONARY...PRODUCING SNOWFALL RATES OF 1-2 INCHES. STRONG
LOWER-MID LEVEL FLOW /SAMPLED AT 40-50 KTS PER ICT AND DDC VWP DATA/
WILL CONTINUE TO FOCUS BROAD ZONE OF ISENTROPIC UPGLIDE ACROSS THE
DISCUSSION AREA. DEEP SATURATED DENDRITIC GROWTH LAYER ATOP COLD
ARCTIC AIR MASS WILL YIELD VERY HIGH LIQUID SNOWFALL RATIOS AROUND
20-30:1. WITH TIME...MID-LEVEL FORCING WILL INCREASE IN RESPONSE TO
DCVA AHEAD OF AN APPROACHING UPPER SHORTWAVE TROUGH CURRENTLY
POSITIONED OVER THE SRN ROCKIES /PER WATER VAPOR IMAGERY/.
ADDITIONALLY...140+ KT UPPER JET WILL BECOME REPOSITIONED FROM ERN
NM INTO WRN OK...PLACING MUCH OF THE NRN TX PANHANDLE/NWRN OK AND
SRN KS IN THE FAVORABLE CYCLONIC EXIT REGION. THIS WILL CONTINUE TO
SUPPORT A SWD EXPANSION OF HEAVY SNOWFALL INTO THE NRN TX PANHANDLE
AND NWRN OK.

..ROGERS.. 02/08/2011

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

ATTN...WFO...SGF...EAX...TSA...TOP...ICT...OUN...DDC...GLD...
AMA...PUB...ABQ...

LAT...LON   35130240 35840304 37340273 37680232 38050190 38440117
            38839809 38749602 38259494 37759462 37319483 36929579
            36069840 35510043 35130240

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 8, 1:56 AM MST	Mesoscale Discussion	SPC	Bent, Cheyenne, Crowley, Kiowa, Kit Carson, Lincoln and 3 more	6 hr
Feb 8, 9:11 AM MST	Mesoscale Discussion	SPC	Baca, Las Animas, Prowers	6 hr

Nearby

Mesoscale Discussions in Kansas, 2011 Mesoscale Discussions in Oklahoma, 2011 Mesoscale Discussions in Texas, 2011 Every mesoscale discussion in 2011

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.