Area Forecast Discussion
Issued by NWS Grand Forks, ND

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FXUS63 KFGF 250445
AFDFGF

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND FORKS ND
1145 PM CDT FRI APR 24 2015

.UPDATE...
ISSUED AT 1145 PM CDT FRI APR 24 2015

NO CHANGES NEEDED FOR THIS UPDATE.

&&

.SHORT TERM...(THIS EVENING THROUGH SATURDAY NIGHT)
ISSUED AT 353 PM CDT FRI APR 24 2015

SPLIT FLOW WAS ACROSS THE STATES WITH NORTHERN STREAM OVER SOUTHERN
CANADA AND SOUTHERN STREAM OVER CENTRAL AND SOUTHERN STATES. BROAD
LOW AMPLITUDE UPPER RIDGE WAS OVER THE NORTHERN PLAINS. UPPER LEVEL
RIDGE WILL BUILD/AMPLIFY TONIGHT THROUGH SUN. UPPER LEVEL LOW OVER
THE PACIFIC NORTHWEST WILL MOVE INTO THE NORTHERN PLAINS BY 84
HOURS.

SOUTH/SOUTHEAST WIND WILL BRING LOW LEVEL MOISTURE INTO THE REGION
TODAY. TRAJECTORY BECOMES MORE EAST/SOUTHEAST TONIGHT AND FOR THE
REST OF THE PERIOD AS SURFACE HIGH PRESSURE MOVES INTO THE WESTERN
GREAT LAKES. DRIER AIR MOVES IN FROM THE EAST SAT AND SUN TO THE
EASTERN ZONES.

WENT COOLER FOR SUN AND MONDAY MORNING.

.LONG TERM...(SUNDAY THROUGH FRIDAY)
ISSUED AT 353 PM CDT FRI APR 24 2015

LONG TERM PERIOD BEGINS WITH UPPER LOW/BROAD TROF OVER ERN MANITOBA
EXTENDING INTO EASTERN DAKOTAS...AND SFC LOW OVER THE GREAT LAKES.
THIS BRINGS EXTENDED PERIOD OF WRAP AROUND MOISTURE OVER EASTERN
ZONES AS LOW SHIFTS INTO CNTRL ONTARIO...RETROGRADES SLIGHTLY...AND
THEN BEGINS TO SPIN OVER HUDSON BAY AREA THROUGH MID WEEK. THIS
KEEPS THE EASTERN AND NORTHEASTERN ZONES IN A CHANCE FOR RAIN DURING
THE DAY AND MIXED PRECIP AT NIGHT THROUGH TUESDAY NIGHT. NW FLOW
PATTERN THEN SETS UP FOR REMAINDER OF THE WEEK...BUT AS UPPER LOW
MOVES MORE INTO EASTERN CANADA...ANY MOISTURE ASSOCIATED WITH WAVES
ROTATING AROUND THE LOW STAY NORTH AND EAST OF THE CWA...BRINGING
HIGH BUT COOL WEATHER FOR THE SECOND HALF OF THE WORK WEEK.

&&

.AVIATION...(FOR THE 06Z TAFS THROUGH 06Z SATURDAY NIGHT)
ISSUED AT 1145 PM CDT FRI APR 24 2015

MVFR CIGS WILL FALL INTO THE IFR RANGE FOR THE SOUTHERN AREAS
OVERNIGHT. CIGS SHOULD SLOWLY INCREASE INTO THE VFR RANGE FROM
WEST TO EAST BY LATE SAT AFTERNOON OR SAT EVENING. MODELS MAY BE
TOO FAST IN MOVING CLOUDS OUT SO HAVE STAYED ON THE PESSIMISTIC SIDE.

&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...NONE.
MN...NONE.
&&

$$

UPDATE...DK
SHORT TERM...HOPPES
LONG TERM...SPEICHER
AVIATION...DK





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