[LeArc] Forecast Discussion : MLI@ 11/26/02 3:20:02 PM

[learc@mailman.qth.net]

The following weather message is provided by McDonough County E.S.D.A.


FXUS63 KDVN 262132
AFDMLI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
331 PM CST TUE NOV 26 2002

SURFACE WEATHER MAP SHOWS HIGH PRESSURE SETTLING INTO OUR AREA.
RIDGE AXIS AT 21Z EXTENDED THROUGH NORTHERN MINNESOTA...EASTERN SOUTH
DAKOTA...AND CENTRAL NEBRASKA. WEAKENING LOW PRESSURE WAS OVER THE
VIRGINIA...TENNESSEE...NORTH CAROLINA AREA...WITH ANOTHER LOW OFF
THE NORTH CAROLINA/SOUTH CAROLINA COASTS. UPPER AIR CHARTS SHOWED A
TROF AT H5 EXTENDING THROUGH SOUTHERN ONTARIO...NORTHWEST IOWA...AND
NORTHWEST KANSAS. THE H3 CHART SHOWED A TROF EXTENDING THROUGH
SOUTHERN ONTARIO...NORTHWEST IOWA...AND NORTHEAST KANSAS. A WIND
SPEED MAX HAD ROUNDED THE BASE OF THE TROF...WHILE ANOTHER WIND SPEED
MAX WAS UPSTREAM OF THE TROF IN WESTERN CANADA. RADAR SHOWS THE SNOW
WHICH HAD FALLEN OVER THE SOUTHEASTERN PART OF OUR CWA HAD
DISSIPATED.

FORECAST CHALLENGES INCLUDE LOW TEMPERATURES TONIGHT...THE CHANCE OF
SNOW FRIDAY NIGHT INTO SUNDAY MORNING...AND THE CHANCE OF RAIN OR
SNOW MONDAY INTO TUESDAY NIGHT.


SHORT TERM...

TEMPERATURES ARE EXPECTED TO BE COLD TONIGHT AS SURFACE RIDGE NEARS
OUR AREA. THE RIDGE SHOULD BE ACROSS THE WESTERN PARTS OF OUR CWA
WEDNESDAY MORNING. THE LOWEST TEMPERATURES WILL BE IN THE SAME
GENERAL AREA. HIGH PRESSURE WILL DOMINATE OUR WEATHER THROUGH
THURSDAY...WHEN A COLD FRONT WILL SWING THROUGH OUR AREA.

GOING TEMPERATURES LOOK GOOD...SO I MADE ONLY SOME MINOR CHANGES.


EXTENDED...

OUR AREA REMAINS UNDER CYCLONIC FLOW AT H5 WITH THE EXCEPTION OF
SUNDAY NIGHT INTO MONDAY MORNING...WHEN A RIDGE PASSES OVER OUR AREA.
FIRST SYSTEM TO AFFECT OUR AREA LATE FRIDAY INTO SUNDAY MORNING WITH
A CHANCE OF FLURRIES POSSIBLE. FLURRIES POSSIBLE OVER THE NORTHEAST
1/2 OF OUR CWA LATE FRIDAY INTO SATURDAY NIGHT...WITH FLURRIES
POSSIBLE OVER ONLY THE NORTHEAST 1/4 OF OUR CWA SUNDAY MORNING. NEXT
SYSTEM TO AFFECT OUR AREA MONDAY INTO TUESDAY NIGHT. LIGHT RAIN OR
LIGHT SNOW POSSIBLE ACROSS THE ENTIRE CWA MONDAY INTO TUESDAY
MORNING...WITH LIGHT RAIN OR LIGHT SNOW POSSIBLE OVER ONLY THE
SOUTHEAST 1/3 OF THE CWA TUESDAY NIGHT.

GOING TEMPERATURES LOOK GOOD SO I MADE ONLY SOME MINOR CHANGES.


.DVN...
IA...NONE.
IL...NONE.
MO...NONE.

JAZ