Alert archive / Kansas / Mesoscale Discussions in 2012

Mesoscale Discussion 1182

June 15, 201220 counties in Kansas; Harper County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Jun 15, 2012, 11:25 PM CDT for 20 counties in Kansas; Harper County, Oklahoma. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Jun 15, 2012, 11:25 PM CDT (04:25 UTC)
Expired
Jun 16, 2012, 1:00 AM CDT
In force
95 min
Issued by
the Storm Prediction Center
Chance of a watch
40%
All 21 counties

Barber County, KS, Clark County, KS, Comanche County, KS, Edwards County, KS, Finney County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kingman County, KS, Kiowa County, KS, Lane County, KS, Meade County, KS, Pratt County, KS, Scott County, KS, Seward County, KS, Wichita County, KS, Harper County, OK

The radar

The Dodge City radar (KDDC), 18 km from the middle of the area, began a volume at 04:28 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

Dodge City, (KDDC), launched 00:00Z, 4.4 hours before the alert went out and 24 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, Dodge City, at 00:00Z on 2012-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 951 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, Dodge City, at 00:00Z on 2012-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
951 J/kg
Mixed-layer CIN
-174 J/kg
Mixed-layer LCL
1862 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

582 
ACUS11 KWNS 160426
SWOMCD
SPC MCD 160425
KSZ000-OKZ000-160600-

MESOSCALE DISCUSSION 1182
NWS STORM PREDICTION CENTER NORMAN OK
1125 PM CDT FRI JUN 15 2012

AREAS AFFECTED...SW KS...FAR NRN OK

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 160425Z - 160600Z

PROBABILITY OF WATCH ISSUANCE...40 PERCENT

SUMMARY...A WIND DAMAGE THREAT COULD DEVELOP AS THE SRN END OF A
LINE OF STORMS MOVES SEWD ACROSS SW KS AFTER MIDNIGHT. SOME
UNCERTAINTY EXISTS CONCERNING THE MAGNITUDE OF THE SEVERE THREAT BUT
THE LINE WILL BE MONITORED CLOSELY FOR TREND CHANGES. WW ISSUANCE
COULD BE NECESSARY IF THE LINE SHOWS SIGNS OF INTENSIFICATION.

DISCUSSION...THE SRN END OF A LINE OF STRONG THUNDERSTORMS IN WRN KS
WILL CONTINUE TO MOVE SEWD INTO A MORE UNSTABLE AND MOIST
ENVIRONMENT OVERNIGHT. MLCAPE VALUES NEAR THE KS-OK STATELINE
EXTENDING NWWD RANGE FROM 1500 TO 2000 J/KG AND MID-LEVEL LAPSE
RATES ARE ESTIMATED BY THE 00Z DDC SOUNDING TO BE AROUND 8.0 C/KM.
IN ADDITION TO THE FAVORABLE THERMODYNAMIC ENVIRONMENT...THE LATEST
MESOANALYSIS SHOWS A 35 KT JET MAX JUST BEHIND THE LINE SUGGESTING
THE DEVELOPMENT OF A COLD POOL WILL BE POSSIBLE DURING THE OVERNIGHT
PERIOD ESPECIALLY ON THE SRN END OF THE LINE. SOME SHORT-TERM MODEL
SOLUTIONS INCLUDING THE HRRR SHOW A LINEAR MCS AND BOWING LINE
SEGMENT MOVING SEWD ACROSS SW KS AND INTO NRN OK. IF THIS
OCCURS...THEN A WIND DAMAGE THREAT MAY DEVELOP DURING THE OVERNIGHT
PERIOD. HAIL MAY ALSO OCCUR WITH THE STRONGER UPDRAFTS.

..BROYLES/CARBIN.. 06/16/2012

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

ATTN...WFO...ICT...OUN...DDC...GLD...AMA...

LAT...LON   38229936 38610037 38610114 38300180 37890198 37620183
            37280125 37060074 36739948 36759850 37169813 37719809
            38229936

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 15, 7:00 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Gove, Graham, Greeley and 17 more90 min
Jun 15, 7:11 PM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Gove, Logan, Rawlins, Sheridan and 3 more5 hr
Jun 15, 10:47 PM CDTMesoscale DiscussionSPCCheyenne, Decatur, Gove, Logan, Rawlins, Sheridan and 3 more88 min
Jun 16, 4:10 AM CDTMesoscale DiscussionSPCBarber, Comanche, Harper, Kingman, Kiowa, Pratt and 2 more65 min
Jun 16, 11:40 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Doniphan, Johnson, Leavenworth and 3 more95 min
Jun 16, 5:36 PM CDTMesoscale DiscussionSPCBourbon, Crawford, Linn84 min
Jun 16, 6:24 PM CDTMesoscale DiscussionSPCClark, Grant, Haskell, Meade, Morton, Seward and 2 more96 min
Jun 15, 11:44 PM CDTMesoscale DiscussionSPCHarmon91 min
Jun 16, 1:45 AM CDTMesoscale DiscussionSPCHarmon60 min
Jun 16, 3:02 PM CDTMesoscale DiscussionSPCAlfalfa, Blaine, Caddo, Canadian, Carter, Cleveland and 20 more88 min

Nearby

Mesoscale Discussions in Kansas, 2012Mesoscale Discussions in Oklahoma, 2012Every mesoscale discussion in 2012

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.