7:00 Winter Storm update

Here are the weather headlines at 7:00 PM.....

Heavy snow is falling over southeast Missouri. Up to an inch has fallen so far.

There have been some snow grains falling in Louisville with rain to the southeast.

Once the precip. starts falling heavier, temps aloft and at the surface will cool.

This statement from NESDIS is heavy on the meteorological side but it explains what will happen tonight.

SATELLITE ANALYSIS AND TRENDS...COMPACT UPPER LVL TROF LIFTING ENE ACROSS
NE OK /NW AR/SW MO WILL PRODUCE LOCALLY MOD-LOCALLY HVY SNOWFALL RATES
ACROSS PARTS OF AR/MO/IL/IN/KY AND OH OVER THE NEXT 6-12 HRS. PRECIP HAS
STARTED TO INCRS IN COVERAGE/INTENSITY ACROSS SE MO/SRN IL OVER THE PAST
2-3 HRS WITH CLOUD TOP COOLING EVIDENT IN IR IMAGERY AS WELL. EXPRMTL
MESOSCALE WIND ALGORITHM IS CURRENTLY IDENTIFYING THE AREA OF BEST UPPER
LVL DVG TO BE OVER S CENTRAL/SE MO AND SW CORRELATING WITH THE ENHANCING
PRECIP. SFC TEMPS ARE GNRLY IN THE LOW TO MID 30'S ACROSS NRN AR/MO/SRN
IL/SRN IN BUT HAVE SOME ROOM TO COOL THROUGH EVAPORATIVE AND NIGHTTIME
COOLING OVER THE NEXT FEW HRS TO TRANSITION FROM RAIN TO SNOW..WITH
GRADUAL EXPANSION OF SNOW SEWD INTO NRN/WRN KY OVERNIGHT AS THE FRONT
MOVES E.
.
SHORT TERM OUTLOOK VALID 2345-0545Z...MEDIUM CONFIDENCE FACTOR IN SHORT
TERM OUTLOOK...S/WV TROF MOVING ENE WILL UTILIZE MOISTURE ALREADY DRAWN
NWD INTO THE TN VLY BY THE PREVIOUS WAVE TO PRODUCE PRECIP ACROSS PARTS
OF AR/TN/MO/IL/IN/KY/OH. GRADUAL COOLING WILL KEEP OR CHANGE PRECIP
TO MOSTLY SNOW ACROSS SE MO/S IL/S IN DURING THE NEXT 3-6 HRS WITH EWD
MOVING FRNTL BNDRY ALSO COOLING SFC TEMPS FROM W-E. SNOWFALL RATES MAY
REACH AS HIGH AS 1"/HR IN DVLPG BANDS WITHIN THE DIFFLUENT ZONE OUT AHEAD
OF THE TROF AXIS. WITH MODEL FCSTS SHOWING BEST UVV'S  MOVING FROM SE
MO TO SRN IN/SW OH DURING THE NEXT 6 HRS..EXPECT THESE AREAS ARE WHERE
GREATEST CHC OF HVY SNOW RATES WILL OCCUR.

 

Comments

[Mark Schneider]

Snowing nickel sized flakes in the Fern Creek area, occasionally mixing with sleet. Interestingly, precip started as snow with a temp of 37 degrees.