[LeArc] Special Weather Statement : MLI@ 5/17/02 5:35:08 AM

[learc@mailman.qth.net]

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


WWUS35 KMLI 171035
SPSMLI
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-181000-

SIGNIFICANT WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
530 AM CDT FRI MAY 17 2002

...COOL TODAY WITH A CHANCE OF RAIN...POSSIBLE RECORD COLD TONIGHT...

A LARGE CANADIAN HIGH PRESSURE SYSTEM WILL CONTINUE TO BUILD DOWN
ACROSS THE NORTHERN PLAINS AND UPPER MIDWEST TODAY. AS IT DOES...AN
UPPER AIR DISTURBANCE WILL MOVE EAST OUT OF THE CENTRAL PLAINS AND
RIPPLE ALONG THE EDGE OF IT THIS MORNING. THIS DISTURBANCE WILL
CREATE A CHANCE FOR SOME LIGHT RAIN AND SPRINKLES THROUGH MIDDAY...
MAINLY ALONG AND SOUTH OF A LINE FROM SIGOURNEY...TO PRINCETON
ILLINOIS. A SECONDARY DISTURBANCE WILL DROP OUT OF SOUTH CENTRAL
CANADA AND DOWN ACROSS THE AREA THIS EVENING. THIS SECOND WAVE WILL
COMBINE WITH INCREASINGLY UNSTABLE CONDITIONS IN THE LOWER LAYERS OF
THE ATMOSPHERE DUE TO THE COLD AIR ALOFT...TO CREATE SCATTERED
SHOWERS THIS AFTERNOON AND EVENING. MOST OF THE AREA WILL BE
SUSCEPTIBLE TO THESE HIT AND MISS SHOWERS...BUT AREAS NORTHEAST OF A
VINTON...TO QUAD CITY LINE WILL BE MORE FAVORABLE. PROJECTED VERTICAL
TEMPERATURE PROFILES SUGGEST THAT IF THE AFTERNOON AND EVENING
INSTABILITY SHOWERS CAN BECOME MORE VIGOROUS AND SUSTAIN THEMSELVES
FOR AWHILE...THEY WILL ALSO PRODUCE SLEET OR ICE PELLETS.

COOL AIR BEING PUSHED DOWN INTO THE REGION OUT OF CANADA...WILL
COMBINE WITH THE CLOUD COVER TO MAKE FOR AN UNSEASONABLY COOL DAY
TODAY. HIGH TEMPERATURES THIS AFTERNOON WILL ONLY RANGE IN THE 50S.
NORMAL HIGHS FOR THIS TIME OF YEAR ARE GENERALLY IN THE LOWER 70S.

LATER TONIGHT...SKIES WILL CLEAR OUT AND THE CHILLY CANADIAN AIR WILL
HAVE ITS EFFECT. TEMPERATURES WILL DIP DOWN INTO THE MID TO UPPER 30S
BY 5 AM SATURDAY MORNING AND THREATEN TO TIE OR EVEN BREAK RECORD
LOWS. SINCE IT IS THE GROWING SEASON...PEOPLE WITH TEMPERATURE
SENSITIVE PLANTS OUTSIDE WILL WANT TO TAKE THE NECESSARY PRECAUTIONS
TO PROTECT THEM.

NO SEVERE WEATHER IS EXPECTED TODAY OR TONIGHT.

JDH

WWWW