Alert archive / Missouri / Mesoscale Discussions in 2003

Mesoscale Discussion 150

February 23, 200319 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2003, 5:58 PM CST for 19 counties in Missouri. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Feb 23, 2003, 5:58 PM CST (23:58 UTC)
Expired: Feb 23, 2003, 9:00 PM CST
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Bates County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cole County, MO, Cooper County, MO, Gasconade County, MO, Henry County, MO, Hickory County, MO, Miller County, MO, Moniteau County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, St. Clair County, MO, Vernon County, MO, Warren County, MO

The radar

The Pleasant Hill radar (KEAX), 139 km from the middle of the area, began a volume at 00:07 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, 12.0 hours before the alert went out and 192 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: 766 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 100 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 232359
SWOMCD
SPC MCD 232358 
KSZ000-MOZ000-240300-

MESOSCALE DISCUSSION 0150
NWS STORM PREDICTION CENTER NORMAN OK
0558 PM CST SUN FEB 23 2003

AREAS AFFECTED...EXTREME E CENTRAL KS...CENTRAL MO

CONCERNING...PRECIPITATION TRENDS...WINTER PRECIPITATION 

VALID 232358Z - 240300Z

AN AREA OF MDT TO HEAVY SNOW MOVING ACROSS CENTRAL MO IS EXPECTED
TO DECREASE IN INTENSITY OVER THE NEXT 2-4 HOURS.



AS SURFACE LOW OVER AR CONTINUES TO MOVE NEWD...LOW LEVEL
MOISTURE SOURCE WILL MOVE EWD ALONG WITH IT AND BECOME DISPLACED
FROM HEAVY SNOW BAND CURRENTLY OVER W CENTRAL MO.  ISENTROPIC
LIFT WILL DECREASE AS WELL AS LOW LEVEL WINDS BACK OVER CENTRAL
MO AND LOW LEVEL JET IS DIRECTED TOWARDS THE OHIO RIVER VALLEY BY
06Z.  COMBINATION OF DECREASING LIFT AND MOISTURE WILL CAUSE A
MARKED DECREASE IN SNOW RATES OVER CENTRAL MO...BUT LIGHT TO MDT
SNOW WILL CONTINUE THROUGH THE EVENING.  

..JEWELL.. 02/23/2003

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

38069229 37739454 38359467 38819318 39299140 38619085

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 23, 10:41 AM CST	Mesoscale Discussion	SPC	Barry, Bollinger, Butler, Cape Girardeau, Dade, Dent and 19 more	5 hr
Feb 23, 3:45 PM CST	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Dent, Iron, Jefferson, Madison and 6 more	5 hr

Nearby

Mesoscale Discussions in Missouri, 2003 Every mesoscale discussion in 2003

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.