Spot Forecast Issued by NWS Twin Cities, MN
000
FNUS73 KMPX 151037
FWSMPX
Spot Forecast for Howard Farm WPA Rx...USFWS
National Weather Service Twin Cities/Chanhassen MN
537 AM CDT Mon Apr 15 2024
Forecast is based on ignition time of 0600 CDT on April 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
Please contact our office if you have questions or concerns with
this forecast.
.DISCUSSION...
Relative humidity in the 50-60 percent range at ignition, with
light winds early this morning. Elevated fire weather concerns
continue today, as RH`s fall into the low 20s this afternoon.
Easterly winds of 5-10 mph early this morning will increase to
15-20 this afternoon, with gusts near 30 mph.
.TODAY...
Sky/weather.........Sunny (20-30 percent).
Temperature.........46 at ignition...Max 72.
RH..................60 percent at ignition...Min 21 percent.
Wind (20 ft)........Winds northeast at 7 mph at
ignition...otherwise East winds 7 to 16 mph
increasing to 18 to 21 mph late in the
afternoon.
Smoke dispersal.....Poor /3700 knot-ft/ at ignition.
Max...excellent /94400 knot-ft/.
Mixing height.......400 ft AGL at ignition...otherwise 4500 ft AGL.
Transport winds.....East 10 to 18 mph increasing to 20 to 24 mph
late in the afternoon.
Haines Index........5 or moderate potential for large plume
dominated fire growth at ignition...max 5.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MCR PC PC MCR MCR MCR MCR PC PC MCR MCR MCR
Weather cov.....
Weather type....
Tstm cov........
Temp............46 44 47 51 57 61 64 67 70 72 72 72
RH..............60 68 63 56 43 35 31 28 23 21 23 23
20 FT wind dir..NE E E E E E E E E E E E
20 FT wind spd..7 8 9 10 13 13 14 14 15 16 18 21
20 FT wind gust.10 12 14 17 18 18 18 20 21 22 25 29
Mix hgt (kft)...0.4 0.4 0.4 0.7 1.2 2.1 2.6 2.8 3.6 3.9 4.2 4.5
Transp wind dir.E E E E E E E E E E E E
Transp wind spd.10 13 15 17 17 18 18 17 18 20 21 24
Haines index....5 5 5 5 5 5 5 5 5 5 5 5
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent) then becoming
mostly cloudy (65-75 percent). Slight chance of
showers and thunderstorms overnight. Chance of
showers and thunderstorms after 3 am.
Temperature.........Min 47.
RH..................Max 86 percent.
Wind (20 ft)........East winds 16 to 21 mph. Gusty and erratic
winds expected near thunderstorms overnight.
Smoke dispersal.....Excellent (92400 knot-ft) early in the evening
decreasing to poor (12300 knot-ft) late in the
night.
Mixing height.......700 ft AGL.
Transport winds.....East 21 to 25 mph.
Haines Index........4 to 5 or low to moderate potential for large
plume dominated fire growth.
.TUESDAY...
Sky/weather.........Cloudy (85-95 percent). Rain showers likely
early in the morning. Chance of thunderstorms
through the day. Rain showers.
Temperature.........Max 58.
RH..................Min 55 percent.
Wind (20 ft)........Breezy. East winds 21 to 25 mph with gusts to
around 36 mph. Gusty and erratic winds expected
near thunderstorms.
Smoke dispersal.....Fair (29300 knot-ft) early in the morning
increasing to excellent (63200 knot-ft) in the
afternoon.
Mixing height.......1900 ft AGL.
Transport winds.....Southeast 28 to 37 mph shifting to the east 29
to 38 mph in the late morning and afternoon.
Haines Index........3 to 4 or very low to low potential for large
plume dominated fire growth.
$$
Forecaster...Strus
Requested by...Ryan Williams
Type of request...PRESCRIBED
.TAG 2410816.0/MPX
.DELDT 04/15/24
.FormatterVersion 2.0.0
.EMAIL ryan_williams@fws.gov