564
FXUS63 KGRR 190657
AFDGRR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
257 AM EDT TUE MAR 19 2019
LATEST UPDATE...
SYNOPSIS/DISCUSSION
SYNOPSIS
ISSUED AT 256 AM EDT TUE MAR 19 2019
- CHANCES FOR LIGHT RAIN/SNOW WEDNESDAY AND THURSDAY NIGHT
DISCUSSION
(TODAY THROUGH NEXT MONDAY)
ISSUED AT 256 AM EDT TUE MAR 19 2019
FAIRLY QUIET WEATHER THROUGH THE WEEKEND. P-TYPE IS AN ISSUE ON
WEDNESDAY INTO WEDNESDAY NIGHT AS MINOR NORTHERN AND SOUTHERN
STREAM SFC LOWS MERGE ACROSS THE CENTRAL/EASTERN GREAT LAKES.
PRECIP IS EXPECTED TO BE LIGHT AND SURFACE TEMPERATURES ABOVE
FREEZING DURING THIS EVENT SO TRAVEL IMPACTS ARE NOT EXPECTED
EVEN IF THE P-TYPE GOES OVER TO SNOW WEDNESDAY EVENING.
THIS IS FOLLOWED BY A QUICK HITTING SHORTWAVE TROUGH DIVING SOUTH
FROM CENTRAL CANADA BY FRIDAY MORNING. SOME SNOW IS POSSIBLE WITH
THIS ACROSS CENTRAL LOWER MICHIGAN BUT AGAIN, ANY AMOUNTS APPEAR
LIGHT AND NO SIGNIFICANT IMPACTS ARE EXPECTED.
A MORE SUBSTANTIAL STORM IS APPROACHING SUNDAY NIGHT INTO MONDAY
BUT THE BULK OF IT MAY REMAIN WELL SOUTH OF LOWER MICHIGAN.
SOMETHING TO KEEP AN EYE ON FOR NOW.
AVIATION
(FOR THE 00Z TAFS THROUGH 00Z TUESDAY EVENING)
ISSUED AT 1155 PM EDT MON MAR 18 2019
VFR CONDITIONS WILL CONTINUE AT ALL THE TERMINALS THROUGH TUESDAY
EVENING. SCATTERED HIGH LEVEL CLOUD COVER WILL MOVE IN FROM THE
WEST OVERNIGHT AND SOME LOWER CLOUDS WITH CLOUD BASES AROUND 5 KFT
AGL WILL DEVELOP TUESDAY MORNING AND AFTERNOON. WINDS WILL BE OUT
OF THE SOUTHWEST AT OR BELOW 10 KTS THROUGH TUESDAY.
HYDROLOGY
ISSUED AT 318 PM EDT MON MAR 18 2019
MOST RIVERS IN OUR AREA ARE RECOVERING FROM THE SHOCK OF HEAVY
RAINFALL AND SIGNIFICANT SNOWMELT AT THE END OF LAST WEEK. THE
MUSKEGON RIVER FROM CROTON DAM DOWNSTREAM REMAINS NEAR OR SLIGHTLY
ABOVE FLOOD-STAGE. SIMILARLY, PARTS OF THE GRAND RIVER AROUND
COMSTOCK PARK AND ROBINSON TOWNSHIP, AS WELL AS THE MAPLE RIVER NEAR
MAPLE RAPIDS ARE SLIGHTLY ABOVE FLOOD STAGE. A GRADUAL FALLING TREND
IS EXPECTED ON ALL OF THESE RIVERS OVER THE NEXT FEW DAYS AS
GENERALLY DRY WEATHER IS EXPECTED THROUGHOUT THIS WEEK AND INTO THE
WEEKEND.
SUBSTANTIAL AREAL FLOODING (NOT NEAR RIVERS) OCCURRED OR IS STILL
OCCURRING IN AND NEAR NEWAYGO COUNTY, THOUGH SOME IMPROVEMENT HAS
OCCURRED OVER THE PAST DAY. NUMEROUS HOMES HAVE BEEN AFFECTED.
NUMEROUS ROADS ARE CLOSED, EITHER DUE TO WATER STILL OVER THE ROAD
OR DAMAGE DONE TO THE ROADS. THIS AREA WAS AT THE UNFORTUNATE
INTERSECTION OF HAVING A MAJORITY OF THEIR 2 TO 5 INCHES OF SNOWPACK
WATER CONTENT MELT ALONG WITH 1 TO 2 INCHES OF RAINFALL ON THURSDAY,
OVER A FROZEN GROUND WHICH INCREASED RUNOFF.
GRR WATCHES/WARNINGS/ADVISORIES
NONE.
SYNOPSIS...OSTUNO
DISCUSSION...OSTUNO
AVIATION...LAURENS
HYDROLOGY...AMD
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