Alert archive / Missouri / Mesoscale Discussions in 2007

Mesoscale Discussion 607

April 27, 20077 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2007, 5:39 PM CDT for 7 counties in Missouri. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Apr 27, 2007, 5:39 PM CDT (22:39 UTC)
Expired: Apr 27, 2007, 7:15 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center

Counties Barton County, MO, Bates County, MO, Cass County, MO, Cedar County, MO, Henry County, MO, Jackson County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 75 km from the middle of the area, began a volume at 22:40 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

Springfield, MO (KSGF), launched 12:00Z, 10.7 hours before the alert went out and 142 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: 1325 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 70 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.

000 
ACUS11 KWNS 272240
SWOMCD
SPC MCD 272239 
MOZ000-KSZ000-280015-

MESOSCALE DISCUSSION 0607
NWS STORM PREDICTION CENTER NORMAN OK
0539 PM CDT FRI APR 27 2007

AREAS AFFECTED...WRN MO

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 

VALID 272239Z - 280015Z

AN ISOLATED SEVERE THREAT WILL LIKELY CONTINUE FOR AT LEAST ONE MORE
HOUR ACROSS FAR ERN KS WITH THE THREAT SPREADING INTO FAR WRN MO. A
BRIEF TORNADO OR TWO MAY OCCUR WITH THE STRONGER CELLS. HAIL AND
STRONG GUSTY WINDS MAY ALSO ACCOMPANY THE ACTIVITY. THE THREAT
SHOULD BE TOO BRIEF TO WARRANT A WW EARLY THIS EVENING ACROSS THE
REGION.

LATEST SFC ANALYSIS SHOWS A MOST AXIS EXTENDING NWD FROM ERN OK
ACROSS ERN KS INTO NW MO. A SFC TROUGH/WIND SHIFT IS LOCATED FROM
NEAR KANSAS CITY MO EXTENDING SWWD INTO NRN OK. ROTATING STORMS HAVE
DEVELOPED ALONG THIS SFC TROUGH IN A WEAKLY UNSTABLE BUT STRONGLY
SHEARED ENVIRONMENT. AMPLE SPEED SHEAR EXISTS ON REGIONAL PROFILERS
FOR SUPERCELL STORMS ALTHOUGH SFC WINDS ARE VEERED ACROSS MOST OF
THE MD AREA. AN ISOLATED TORNADO THREAT STILL MAY OCCUR WITH THE
STRONGER ROTATING STORMS. IN ADDITION...STEEP MID-LEVEL LAPSE RATES
AND UNIDIRECTIONAL WIND PROFILES BELOW 850 MB SHOWN ON FORECAST
SOUNDINGS LATE THIS AFTERNOON MAY RESULT IN A THREAT FOR HAIL AND
STRONG GUSTY WINDS OVER THE NEXT FEW HOURS.

..BROYLES.. 04/27/2007

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

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

37319416 37439459 38089463 38809460 39109441 39079395
38539374 37579383

Nearby

Mesoscale Discussions in Missouri, 2007 Every mesoscale discussion in 2007

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.