Area Forecast Discussion
Issued by NWS Grand Rapids, MI

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FXUS63 KGRR 181654
AFDGRR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1254 PM EDT FRI JUL 18 2014

LATEST UPDATE...
AVIATION

.SYNOPSIS...
ISSUED AT 320 AM EDT FRI JUL 18 2014

A RIDGE OF HIGH PRESSURE WILL CONTINUE TO BRING FAIR WEATHER TODAY
THROUGH THE WEEKEND. TEMPERATURES WILL UNDERGO A SLOW MODERATING
TREND THROUGH THE WEEKEND INTO EARLY NEXT WEEK. THE NEXT CHANCE
FOR SIGNIFICANT PRECIPITATION WILL NOT COME UNTIL THE MIDDLE PORTION
OF NEXT WEEK.

&&

.SHORT TERM...(TODAY THROUGH SUNDAY)
ISSUED AT 320 AM EDT FRI JUL 18 2014

SHORT TERM FCST CONCERNS ARE MINIMAL. HIGH PRESSURE WILL PRODUCE
MOSTLY CLEAR TO PARTLY CLOUDY SKIES TODAY AND IT WILL BE A LITTLE
WARMER WITH SOUTH WINDS HELPING TO BOOST MAX TEMPS INTO THE UPPER
70S TO NEAR 80 DEGREES.

FAIR AND DRY WX WILL CONTINUE THROUGH SUNDAY. TEMPS WILL CONTINUE TO
MODERATE SLOWLY AND REACH THE LOWER 80S THIS WEEKEND. IT WILL
BECOME A LITTLE MORE HUMID BY SUNDAY WHEN DEW POINTS SHOULD REACH
INTO THE 60S.

.LONG TERM...(SUNDAY NIGHT THROUGH THURSDAY)
ISSUED AT 320 AM EDT FRI JUL 18 2014

MAIN FORECAST PROBLEM IN THE EXTENDED IS TIMING SHOWERS AND
THUNDERSTORMS THROUGH LOWER MICHIGAN AS UPPER RIDGING BREAKS DOWN ON
TUESDAY AND WEDNESDAY AS A SHORTWAVE TROUGH ARRIVES. STILL SOME
SPREAD IN THE DETAILS BUT THE GNERAL PICTURE IS FOR PRECIP TO ARRIVE
TUESDAY NIGHT WITH THE BEST CHANCE ON WEDNESDAY...THEN DIMINISHING
THURSDAY AS THE TROUGH AXIS MOVES EAST.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z SATURDAY AFTERNOON)
ISSUED AT 1251 PM EDT FRI JUL 18 2014

VERY LITTLE IMPACT TO AVIATION EXPECTED FOR THE NEXT 24 HRS.
ADDED MENTION OF VCSH TO LAN AND JXN DURING THE DAY SATURDAY FOR A
LOW THREAT OF A SHOWER. MOST ACTIVITY EXPECTED TO BE CONFINED TO
THE EASTERN PART OF THE STATE...LIKE DTW AND FNT. A BKN DECK IS
EXPECTED TO THICKEN FOR SATURDAY FOR OUR EASTERN TAF SITES...BUT
WITHIN VFR.


&&

.MARINE...
ISSUED AT 1234 PM EDT FRI JUL 18 2014

WEAK PRESSURE GRADIENT WILL KEEP WINDS UNDER SMALL CRAFT ADVISORY
THROUGH THE WEEKEND. WAVE HEIGHTS WILL REMAIN LOW AS WELL.


&&

.HYDROLOGY...
ISSUED AT 300 PM EDT THU JUL 17 2014

DRY WEATHER IS EXPECTED THROUGH THE WEEKEND WHICH WILL ENABLE THE
MAPLE RIVER AT MAPLE RAPIDS TO SLOWLY FALL BELOW ACTION STAGE LATE
FRIDAY.

&&

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

$$

SYNOPSIS...LAURENS
SHORT TERM...LAURENS
LONG TERM...OSTUNO
AVIATION...HOVING
HYDROLOGY...93
MARINE...MJS






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