Overview
Enter summary/what happened:Snow/Ice
TEMPERATURES AND WIND SUNDAY. MODELS IN GOOD AGREEMENT
THROUGH PERIOD AND WILL USE BLEND FOR FORECAST. WELL DEFINED MID
LEVEL CIRCULATION ALONG S SASK/MB BORDER TO PROPAGATE SOUTHWARD TO S
CENTRAL ND/SD BORDER AREA BY EVENING. SURFACE INVERTED TROUGH
ORIENTED ALONG WESTERN/CENTRAL DAKOTAS BORDER INLINE WITH MODEL
SOLUTIONS. AT THIS POINT FEEL ADVISORY AREA SITTING WELL AS GFS
280-285K SURFACES SHOWING BEST LIFT AND LOWEST CONDENSATION PRESSURE
DEFICITS FROM DVL BASIN SOUTHWARD THROUGH FAR WESTERN COUNTIES.
EXCEPTION MAY BE FAR SE ND BUT WILL LET UPCOMING SHIFT MONITOR
TRENDS TO SEE IF ADVISORY NEEDS TO BE EXTENDED A COUNTY EASTWARD.
STILL LOOKING AT 3-5 INCHES THROUGH ADVISORY AREA AS A COUPLE GM/KG
MIXING RATIOS AVAILABLE FOR A TIME. SNOW AMOUNTS SHOULD DROP QUICKLY
EAST WITH AREAS EAST OF THE VALLEY NOT LIKELY TO SEE LITTLE IF ANY
SNOW. WIND DOES NOT LOOK LIKE AN ISSUE DURING THE DAY. TEMPERATURES
STARTING OUT MILD HOWEVER WITH CLOUDS AND COLUMN GRADUALLY COOLING
WILL STAY ON LOW SIDE OF NUMERICAL GUIDANCE WHICH LOOKS TOO
OPTIMISTIC.
SNOW WILL WIND DOWN THIS EVENING AS UPPER LOW SHIFTS SOUTH AND
SURFACE INVERTED TROUGH LOSES DEFINITION ACROSS ND AND COLUMN
UNDERGOES DRYING. WIND WILL BECOME AN ISSUE AS SURFACE HIGH BUILDS
INTO NORTHERN HIGH PLAINS. INCREASE IN WIND SPEED LOOKS TO BE AT END
OF SNOW PERIOD SO MAY BE LOOKING AT MORE DRIFTING VS BLOWING SNOW.
AT THIS POINT NOT CONFIDENT ON DEGREE OF BLOWING/VSBY RESTRICTION TO
EXTEND ADVISORY. AT WORST CURRENT ADVISORIES CAN BE TRANSITIONED TO
BLOWING SNOW IN LATER SHIFTS.
WIND LIKELY TO CONTINUE INTO SUNDAY AS SURFACE HIGH SETTLES INTO
WESTERN DAKOTAS KEEPING FA IN GRADIENT. SKY CONDITION SOMEWHAT IN
QUESTION AS LOW LEVEL MOISTURE HOLDS BUT REMAINDER OF COLUMN DRIES
OUT. ACTUALLY WILL BE SEEING WARM ADVECTION FROM NORTH TO SOUTH
DURING DAY AND IF SOLAR MORE WIDESPREAD CURRENT TEMPERATURES MAY BE
TOO COLD. WITH UNCERTAINTIES WILL STAY THE COURSE WITH CURRENT
VALUES.
HIGH PRESSURE WILL BE DOMINATE FEATURE INTO MIDWEEK. OVERALL LOOKS
DRY WITH TEMPERATURES ON LOW SIDE OF AVERAGE. NO MAJOR CHANGES
PLANNED TO LONGER RANGES.
Photos & Video
Header
Snow totals 13 Feb 2010 (NWS Snow Totals) |
Radar 0600z (DuPage Radar Image) |
Radar 1400z (DuPage Radar Image) |
Radar 2100z (DuPage Radar image) |
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