[LeArc] Forecast Discussion : MLI@ 8/6/02 2:31:09 PM

[learc@mailman.qth.net]

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


FXUS63 KDVN 061926
AFDMLI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
222 PM CDT TUE AUG 6 2002

SURFACE CHART SHOWS HIGH PRESSURE OVER LAKE SUPERIOR EXTENDING
SOUTHWARD INTO OUR AREA. FLOW IS EASTERLY TO NORTHEASTERLY OVER OUR
AREA...WITH SOUTHEASTERLY FLOW TO OUR WEST. UPPER AIR CHARTS SHOW
HIGH PRESSURE AT 850 MB OVER SOUTHERN CANADA...EXTENDING SOUTHWARD
INTO THE SOUTHERN MISSISSIPPI VALLEY...WITH A HIGH AT H7, H5, AND H2
OVER NORTHERN MISSOURI. A RIDGE EXTENDED NORTH FROM THIS HIGH INTO
SOUTHERN CANADA AND WESTERN HUDSON BAY. A TROF WAS OVER THE EASTERN
CANADIAN PROVINCES INTO THE EASTERN U.S....AND OVER WESTERN CANADA
INTO THE NORTHWESTERN U.S.

CHALLENGES THIS FORECAST PERIOD INCLUDE CHANCES OF PRECIP THIS
WEEKEND.

SHORT TERM...
SURFACE HIGH CONTINUES MOVING EAST WITH AIR OFF LAKE MICHIGAN
AFFECTING OUR AREA THROUGH WEDNESDAY. THE LAKE MICHIGAN AIR WILL HELP
COOL OUR TEMPERATURES BY A COUPLE DEGREES. WINDS BECOME MORE
SOUTHERLY LATE WEDNESDAY BRINGING WARMER AIR INTO OUR AREA. THIS FLOW
CONTINUES THROUGH THURSDAY AND INTO THE EXTENDED PERIOD.

EXTENDED...
RIDGE BUILDS OVER CENTRAL U.S. THE FIRST PART OF THE PERIOD THEN
BREAKS DOWN AS THE TROF OVER THE WESTERN U.S. COAST RIDES UP IT. TROF
THEN DOMINATES THE CENTRAL U.S. WEATHER THROUGH TUESDAY. FAIRLY
STRONG SURFACE SYSTEM FORECAST TO MOVE THROUGH OUR AREA SATURDAY...
WITH ANOTHER ONE ON MONDAY. WILL LEAVE CHANCE OF THUNDERSTORMS IN FOR
SATURDAY. WILL BUMP TEMPS DOWN A BIT.


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

JAZ