Text Products for FWS Issued by GRR

Spot Forecast
Issued by NWS Grand Rapids, MI
Versions: 1 2 3 4 5 6 7 8 9 10 11
000
FNUS73 KGRR 240956
FWSGRR

Spot Forecast for SE Peacock 10 RX...USFS
National Weather Service Grand Rapids MI
556 AM EDT Wed Apr 24 2024

Forecast is based on ignition time of 1000 EDT on April 24.
If conditions become unrepresentative, contact the National Weather
Service.

Please contact our office at (616) 949-5150, if you have questions
or concerns with this forecast.

.DISCUSSION...
Cold downsloping flow today. Winds will be out of the northeast and will
weaken as the day continues. RH/s will drop as the day continues, reaching
around 30 percent this afternoon. Expect skies to clear this morning with
sunny skies this afternoon and mostly clear skies overnight. Temperatures
will be below freezing tonight into Thursday.
   Smoke dispersal should be good for most of the day. As winds weaken and
high pressure builds and temperatures drop this evening smoke dispersal will
become poor.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
Temperature.........37 at ignition...Max 51.
RH..................57 percent at ignition...Min 18 percent.
Wind (20 ft)........Winds north at 9 mph at ignition...otherwise
                    North winds 6 to 9 mph.
Mixing height.......2800 ft AGL at ignition...otherwise 4800 ft
                    AGL.
Mixing winds........North 8 to 17 mph decreasing to around 7 mph in
                    the evening.
Smoke dispersal.....480 /good/ at ignition. Max...480 /good/.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth at ignition...max 6.

TIME (EDT)      10 AM  NOON   2 PM   4 PM   6 PM   8 PM
Sky (%).........33     2      1      1      1      1
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............37     42     48     50     49     46
RH..............57     36     26     19     22     27
20 ft wind......N 9    N 8    N 8    N 6    N 7    N 7
20 ft wind gust.16     14     12     9      9      10
Mix hgt (ft)....2800   3700   4400   4800   4700   2600
Mixing wind.....N 17   N 13   N 9    N 8    N 8    N 8
Haines index....5      5      6      6      6      5
Smoke disprsl...480    460    410    390    380    210

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent). Widespread frost
                    toward daybreak.
Temperature.........Min 25.
RH..................Max 70 percent.
Wind (20 ft)........North winds 6 to 7 mph shifting to the
                    southeast after midnight.
Mixing height.......400 ft AGL.
Mixing winds........North 8 to 9 mph shifting to the southeast 7 to
                    10 mph after midnight.
Smoke dispersal.....210 (fair) early in the evening decreasing to
                    30 (poor) late in the night.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

.THURSDAY...

Sky/weather.........Sunny (20-30 percent).
Temperature.........Max 58.
RH..................Min 23 percent.
Wind (20 ft)........South winds 5 to 7 mph becoming around 6 mph in
                    the evening.
Mixing height.......6300 ft AGL.
Mixing winds........Southeast 6 to 8 mph shifting to the west
                    around 6 mph in the evening.
Smoke dispersal.....60 (poor) early in the morning increasing to
                    440 (good) in the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

$$
Forecaster...Ceru
Requested by...Joshua Nichols
Type of request...PRESCRIBED
.TAG 2411995.0/GRR
.DELDT 04/24/24
.FormatterVersion 2.0.0
.EMAIL Joshua.nichols@usda.gov
National Weather Service Weather Forecast Office
