Area Forecast Discussion
Issued by NWS Grand Rapids, MI

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS63 KGRR 100727
AFDGRR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
327 AM EDT THU JUL 10 2014

LATEST UPDATE...
SYNOPSIS/SHORT TERM/LONG TERM/MARINE

.SYNOPSIS...
ISSUED AT 327 AM EDT THU JUL 10 2014

IT WILL REMAIN PLEASANT TODAY AND FRIDAY WITH SUNSHINE AND DAYTIME
TEMPERATURES IN THE 70S.  HOWEVER SHOWERS AND A FEW THUNDERSTORMS
WILL BE MOVING IN LATE FRIDAY NIGHT AND CONTINUE INTO SATURDAY.

ADDITIONAL CHANCES FOR RAIN WILL CONTINUE THROUGH MONDAY NIGHT...
THEN WE SHOULD DRY OUT INTO THE MIDDLE OF NEXT WEEK.  DAYTIME
TEMPERATURES SHOULD BE AROUND 80 SUNDAY AND MONDAY...BUT THEN COOL
TO AROUND 70 TUESDAY AND WEDNESDAY.

&&

.SHORT TERM...(TODAY THROUGH SATURDAY)
ISSUED AT 327 AM EDT THU JUL 10 2014

LITTLE FORECAST CONCERNS FOR THE NEXT 36 HOURS.  HIGH PRESSURE WAS
CENTERED OVER LAKE MICHIGAN EARLY THIS MORNING AND IT WILL ONLY
SLOWLY MARCH TOWARD LAKE ONTARIO BY LATE FRIDAY.  TEMPS SHOULD BE A
COUPLE OF DEGREES WARMER EACH DAY...MOSTLY MID 70S TODAY...THEN
UPPER 70S TO AROUND 80 ON FRIDAY.

LATE FRIDAY NIGHT THROUGH SATURDAY IS LOOKING INCREASINGLY WET.  BY
THEN THE HIGH WILL BE OFF TO OUR EAST AND A COLD FRONT WILL ADVANCE
FROM THE NORTHWEST.  LATEST MODEL TRENDS SHOWS THIS FRONT CROSSING
THE CWA FROM NW TO SE SATURDAY AFTERNOON.  THE FRONT HAS GOOD UPPER
LEVEL SUPPORT TOO WITH A LOW LEVEL JET COMING IN AFTER MIDNIGHT
FRIDAY NIGHT...LINGERING INTO SATURDAY MORNING.  THEN AN
ANTICYCLONIC UPPER JET SHOULD PRODUCE UPPER DIVERGENCE OVER SOUTHERN
LOWER THROUGH MUCH OF SATURDAY LEADING TO PERSISTENT SHOWERS AND
SOME STORMS.  INSTABILITY REMAINS FAIRLY WEAK SO NOT ANTICIPATING
ANY SEVERE STORMS...BUT RATHER POCKETS OF HEAVY RAIN LOOKS MORE
LIKELY...ESPECIALLY SOUTH OF I-96.  HAVE KEEP POPS SOMEWHAT LOW FOR
NOW DUE TO TIMING ISSUES AND POOR AGREEMENT AMONGST SURROUNDING
OFFICES.  BUT THE TREND IS WETTER AND IF THIS HOLDS...POPS WILL NEED
TO BE INCREASED SUBSTANTIALLY.

.LONG TERM...(SATURDAY NIGHT THROUGH WEDNESDAY)
ISSUED AT 327 AM EDT THU JUL 10 2014

WILL BE ISSUED SHORTLY.

&&

.AVIATION...(FOR THE 06Z TAFS THROUGH 06Z THURSDAY NIGHT)
ISSUED AT 1121 PM EDT WED JUL 9 2014

VFR CONDITIONS ARE EXPECTED BETWEEN 06Z TONIGHT AND 06Z TOMORROW
NIGHT. SURFACE HIGHER PRESSURE WILL BRING MAINLY CLEAR SKIES AND
LIGHT WINDS. DURING THE DAY ON THURSDAY THERE WILL BE SOME
SCATTERED CUMULUS DEVELOPMENT WITH BASES AROUND 5000FT.

&&

.MARINE...
ISSUED AT 327 AM EDT THU JUL 10 2014

NICE CONDITIONS EXPECTED ON THE LAKE WITH HIGH PRESSURE OVER THE
AREA THROUGH FRIDAY NIGHT.  HOWEVER SOUTH WINDS WILL INCREASE BY
SATURDAY AND KICK UP WAVES A BIT.  BELIEVE WE WILL STAY BELOW
SCA...BUT SOME 2-4 FOOT WAVES WILL BE POSSIBLE...ESPECIALLY NORTH OF
GRAND HAVEN.  THERE WILL ALSO BE THE RISK OF THUNDERSTORMS LATE
FRIDAY NIGHT INTO SATURDAY.

&&

.HYDROLOGY...
ISSUED AT 328 PM EDT WED JUL 9 2014

NO SIGNIFICANT CHANGES TO THE RIVER FORECASTS. IONIA SHOULD CREST
TONIGHT AND THE MAPLE RIVER AT MAPLE RAPIDS IS NEAR CREST RIGHT NOW.
DRY CONDITIONS OVER THE NEXT COUPLE DAYS SHOULD ALLOW THE OVERALL
SUBSIDING TRENDS TO CONTINUE. SHOWERS AND THUNDERSTORMS EXPECTED
THIS WEEKEND SHOULD RESULT IN AREAL PRECIPITATION AMOUNTS OF LESS
THAN HALF OF AN INCH...WHICH SHOULD HAVE LITTLE IMPACT ON AREA
RIVERS.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LM...NONE.
&&

$$

SYNOPSIS...JK
SHORT TERM...JK
LONG TERM...WDM
AVIATION...DUKE
HYDROLOGY...TJT
MARINE...JK









USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.