Alert archive / Missouri / Mesoscale Discussions in 2010

Mesoscale Discussion 252

April 5, 20109 counties in Kansas; 16 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 5, 2010, 6:56 AM CDT for 9 counties in Kansas; 16 counties in Missouri. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued: Apr 5, 2010, 6:56 AM CDT (11:56 UTC)
Expired: Apr 5, 2010, 8:00 AM CDT
In force: 64 min
Issued by: the Storm Prediction Center

All 25 counties

Atchison County, KS, Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Miami County, KS, Shawnee County, KS, Wyandotte County, KS, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Livingston County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 31 km from the middle of the area, began a volume at 11:59 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 47Apr 5, 7:15 AM CDT

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 11.9 hours before the alert went out and 115 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: 2644 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 137 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.

250 
ACUS11 KWNS 051156
SWOMCD
SPC MCD 051156 
MOZ000-KSZ000-051300-

MESOSCALE DISCUSSION 0252
NWS STORM PREDICTION CENTER NORMAN OK
0656 AM CDT MON APR 05 2010

AREAS AFFECTED...NERN KS...NWRN MO

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

VALID 051156Z - 051300Z

AN ISOLATED SEVERE THREAT MAY PERSIST ACROSS NERN KS AND DEVELOP
ACROSS NWRN MO THIS MORNING. HAIL WOULD LIKELY BE THE MAIN THREAT
WITH THE STORMS. WW ISSUANCE REMAINS POSSIBLE ACROSS THE REGION
ESPECIALLY IF THE NUMBER OF STRONG STORMS CAN INCREASE WITH TIME.

A CLUSTER OF THUNDERSTORMS ACROSS ERN KS IS ONGOING ALONG THE NRN
END OF A CORRIDOR OF INSTABILITY WHERE OBJECTIVE ANALYSIS SHOWS WEAK
INSTABILITY WITH SBCAPE VALUES IN THE 250 TO 500 J/KG RANGE. THE
STORMS ARE LIKELY BEING SUPPORTED BY A SUBTLE SHORTWAVE TROUGH
ORIENTED FROM NE KS SEWD ACROSS SW MO. AS FLOW INCREASES ACROSS THE
REGION THIS MORNING DUE TO A STRENGTHENING LOW-LEVEL JET OVER THE
ARKLATEX...STORM COVERAGE MAY EXPAND NEWD ACROSS PARTS OF NWRN MO.
STRONG DEEP LAYER SHEAR EVIDENT ON REGIONAL WSR-88D VWPS MAY SUPPORT
A SEVERE THREAT WITH THE STRONGER CORES. THE STORMS ARE ELEVATED DUE
TO A STRONG CAPPING INVERSION WHICH SHOULD RESULT IN A HAIL THREAT
BUT LIMIT THE WIND DAMAGE POTENTIAL.

..BROYLES.. 04/05/2010

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

ATTN...WFO...SGF...EAX...TOP...

LAT...LON   38799261 38289454 38339548 38999584 39269579 39679521
            39889383 39789291 38799261

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 4, 7:26 PM CDT	Mesoscale Discussion	SPC	Allen, Chautauqua, Cowley, Elk, Montgomery, Neosho and 1 more	64 min
Apr 5, 2:11 AM CDT	Mesoscale Discussion	SPC	Allen, Butler, Chautauqua, Cowley, Elk, Greenwood and 11 more	94 min
Apr 5, 7:14 AM CDT	Severe Thunderstorm Watch	SPC	Atchison, Brown, Doniphan, Douglas, Franklin, Geary and 15 more	7 hr
Apr 5, 11:11 AM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Marshall, Nemaha	64 min
Apr 5, 4:04 PM CDT	Mesoscale Discussion	SPC	Atchison, Brown, Doniphan, Jackson, Nemaha	56 min
Apr 5, 6:10 PM CDT	Mesoscale Discussion	SPC	Barber, Comanche, Kiowa, Pratt	95 min
Apr 4, 8:25 PM CDT	Mesoscale Discussion	SPC	Audrain, Barton, Benton, Boone, Callaway, Camden and 24 more	65 min
Apr 4, 8:43 PM CDT	Severe Thunderstorm Watch	SPC	Barton, Benton, Callaway, Camden, Cedar, Cole and 32 more	5 hr
Apr 4, 11:16 PM CDT	Mesoscale Discussion	SPC	Barton, Benton, Callaway, Camden, Cedar, Cole and 32 more	59 min
Apr 5, 1:56 AM CDT	Mesoscale Discussion	SPC	Barry, Bollinger, Cape Girardeau, Carter, Christian, Crawford and 29 more	94 min
Apr 5, 12:28 PM CDT	Mesoscale Discussion	SPC	Audrain, Bollinger, Boone, Callaway, Cape Girardeau, Cole and 23 more	62 min
Apr 5, 1:29 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Clark, Gentry, Grundy, Harrison, Mercer and 5 more	6 hr
Apr 5, 2:51 PM CDT	Tornado Watch	SPC	Saint Charles, Saint Louis, City of Saint Louis	4 hr

Nearby

Mesoscale Discussions in Missouri, 2010 Mesoscale Discussions in Kansas, 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.