Suppression Forecast
Issued by NWS Duluth, MN

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000
FNUS73 KDLH 221124
FWSDLH

Spot Forecast for Sandstone Grassland North Rx...Mn DNR
National Weather Service Duluth MN
624 AM CDT Thu Sep 22 2022

Forecast is based on ignition time of 0700 CDT on September 22.
If there are questions or concerns with this forecast, or if
conditions become unrepresentative, contact the National
Weather Service.

.DISCUSSION...

Mostly sunny skies are expected for today with highs around 60. RH
values are expected to fall into the 40 to 45 percent range with
the lowest values from 3 to 5 pm. Winds this morning will be
northerly at 5 to 10 mph with a few gusts to around 15 mph during
the late morning hours. Winds will then become northeasterly by 1
pm at around 4 to 8 mph and then slowly turn southeasterly by 6pm.
Winds may be variable under 5 mph for a time during the mid to
late afternoon hours.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Around 60.
Min humidity........42 percent.
Wind (20 ft)........North winds 5 to 10 mph in the morning and
                    early afternoon becoming light.
Mixing height.......1400 ft AGL increasing to 4300 ft AGL in the
                    late morning and afternoon.
Transport winds.....North 15 to 20 mph decreasing to 5 to 10 mph
                    early in the afternoon, then decreasing to
                    around 0 mph late in the afternoon shifting to
                    the west late in the afternoon.
Smoke dispersal.....Poor to fair (6300-24500 knot-ft) increasing to
                    good to good (30800-43500 knot-ft) late in the
                    morning, then decreasing to poor to fair
                    (3800-19500 knot-ft) in the afternoon.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.
Pcpn amount.........0.00 inches.

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CLR CLR CLR CLR CLR CLR MCR MCR MCR MCR MCR
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1
Temp............42  42  46  50  52  54  56  58  58  59  58
RH..............90  89  73  63  56  52  47  44  44  42  47
20 FT wind dir..N   N   N   N   N   N   N   NE  NE  NE  E
20 FT wind spd..5   5   5   10  10  5   5   5   0   0   0
20 FT wind gust.11  13  14  15  14  12  9   7   6   5   5
Mix hgt (kft)...0.5 0.6 1.4 2.6 3.2 3.4 3.9 4.1 4.3 4.1 3.8
Transp wind dir.N   N   N   N   N   N   N   N   N   W   W
Transp wind spd.15  15  20  20  15  10  5   5   0   0   0
Haines index....3   3   3   3   3   3   4   4   4   4   4
SDspl kt-ft/10006   8   25  44  38  31  20  12  9   8   4

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (55-65 percent). Patchy frost
                    overnight.
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....Around 36.
Max humidity........100 percent.
Wind (20 ft)........Light winds becoming southeast around 5 mph
                    overnight.
Mixing height.......3000 ft AGL decreasing to 700 ft AGL.
Transport winds.....North around 0 mph shifting to the southeast 5
                    to 10 mph in the late evening and overnight.
Smoke dispersal.....Poor (3300 knot-ft).
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Pcpn amount.........0.00 inches.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky cover.......MCLEAR PCLDY  PCLDY  PCLDY  MCLDY  MCLDY
Weather cov.....                            PATCHY PATCHY
Weather type....NONE   NONE   NONE   NONE   FROST  FROST
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
LAL.............1      1      1      1      1      1
Temp............57     47     41     39     36     36
RH..............49     76     92     96     100    100
20 ft wind......SE 0   SE 0   SE 0   SE 5   SE 5   SE 5
20 ft wind gust.2      3      3             6      7
Mix hgt (ft)....3000   600    300    300    300    400
Transport wind..NE 0   N 0    SE 5   SE 5   S 5    S 10
Haines index....4      4      4      4      4      4
SDspl kt-ft/10003      1      1      1      2      3

.FRIDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Patchy frost
                    early in the morning. Slight chance of rain
                    showers late in the morning. Chance of rain
                    showers early in the afternoon, then rain
                    showers likely in the afternoon.
Chance of pcpn......60 percent.
LAL.................1.
Max temperature.....Around 57.
Min humidity........64 percent.
Wind (20 ft)........South winds 5 to 10 mph. Gusts up to 23 mph in
                    the late morning and afternoon.
Mixing height.......2400 ft AGL.
Transport winds.....South 10 to 15 mph increasing to 20 to 25 mph
                    in the late morning and afternoon.
Smoke dispersal.....Poor (14000 knot-ft) increasing to good to good
                    (34800-47000 knot-ft).
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.
Pcpn amount.........0.07 inches.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky cover.......MCLDY  MCLDY  MCLDY  CLOUDY CLOUDY CLOUDY
Weather cov.....PATCHY        S CHC  CHANCE LIKELY LIKELY
Weather type....FROST  NONE   RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........
Chc of pcpn (%).0      10     20     30     60     60
LAL.............1      1      1      1      1      1
Temp............36     41     51     54     55     55
RH..............100    89     71     64     66     72
20 ft wind......SE 5   S 5    S 5    S 10   S 10   S 10
20 ft wind gust.9      14     19     20     20     21
Mix hgt (ft)....500    700    1600   2100   2400   2300
Transport wind..S 10   S 15   S 20   S 20   S 20   S 25
Haines index....4      4      4      4      3      3
SDspl kt-ft/10005      9      25     33     43     47

$$
Forecaster...Bryan
Requested by...Josh Koelsch
Type of request...PRESCRIBED
.TAG 2218468.0/DLH
.DELDT 09/22/22
.FormatterVersion 2.0.0
.EMAIL Joshua.koelsch@state.mn.us


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