061
FNUS73 KUNR 051238
FWSUNR

Spot Forecast for Trinity Rx...Rapid City Fire Dept
National Weather Service Rapid City SD
638 AM MDT Mon May 5 2025

Forecast is based on ignition time of 0700 MDT on May 05.
If conditions become unrepresentative, contact the National Weather
Service.

DISCUSSION...An upper level low will move into the region today
and support increasing clouds and chances for showers late in the
day. Ahead of the front, expect southeast winds of 15 to 25 mph,
with a few gusts up to 30 mph possible. Winds will then shift to
the northwest this evening behind the front. Minimum RH today
will be in the upper 20s, with high temperatures in the upper
70s.

.REST OF TODAY...

Sky/weather.........Sunny (20-30 percent) then becoming partly
                    sunny (50-60 percent). Slight chance of showers
                    and thunderstorms in the afternoon.
Temperature.........54 at ignition...Max 78.
RH..................76 percent at ignition...Min 28 percent.
Wind (20 ft)........Winds southeast at 8 mph at
                    ignition...otherwise South winds 10 to 15 mph.
                    Gusts up to 24 mph increasing to 28 mph in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms in the afternoon.
CWR.................0 percent.
Mixing height.......9800 to 10300 ft agl.
Transport winds.....South 20 to 25 mph.
Smoke dispersal.....Good increasing to excellent in the afternoon.

TIME (MDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   5   5   15  25  35  37  38  40  51  61
Weather cov.....                    SCH SCH SCH SCH SCH SCH
Weather type....                    RW  RW  RW  RW  RW  RW
Tstm cov........                    SCH SCH SCH SCH SCH SCH
CWR.............0   0   0   0   0   0   0   0   0   0   0
Temp............54  61  66  69  72  75  77  78  78  77  76
RH..............76  60  52  46  41  36  31  28  28  29  31
20 FT wind dir..SE  S   S   S   S   S   S   S   S   S   SE
20 FT wind spd..8   9   10  12  13  14  15  15  15  15  14
20 FT wind gust.18  18  20  21  22  24  28  28  28  28  28
Mix hgt (kft)...0.6 1.2 1.9 3.2 4.7 6.8 8.9 9.7 10  9.1 7.9
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.17  17  20  21  23  24  25  25  25  24  23

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of
                    thunderstorms in the evening. Chance of rain
                    showers through the night.
Temperature.........Min 47.
RH..................Max 92 percent.
Wind (20 ft)........Southeast winds around 10 mph with gusts to
                    around 26 mph shifting to the west with gusts
                    to around 24 mph early in the evening, then
                    shifting to the northwest with gusts to around
                    23 mph early in the evening. Gusty and erratic
                    winds expected near thunderstorms in the
                    evening.
CWR.................40 percent.
Mixing height.......700 to 1200 ft agl.
Transport winds.....South around 25 mph shifting to the southwest
                    late in the evening, then shifting to the north
                    late in the evening.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........72  72  72  72  70  68  65  70  74  79  83  87
Weather cov.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC CHC CHC CHC
CWR.............40  40  40  40  40  40  40  40  40  40  40  40
Temp............73  68  63  60  58  56  54  52  50  48  47  47
RH..............35  45  55  64  67  72  80  84  90  92  92  92
20 FT wind dir..SE  W   NW  NW  NW  NW  N   N   N   N   N   N
20 FT wind spd..10  9   10  12  12  10  10  10  10  10  10  10
20 FT wind gust.26  24  22  22  23  22  16  15  18  22  22  22
Mix hgt (kft)...4.6 1.1 0.7 0.7 0.7 0.7 0.9 1.0 1.0 1.1 1.2 1.3
Transp wind dir.S   S   SW  SW  W   NW  N   N   N   N   N   N
Transp wind spd.22  22  21  20  20  18  17  18  18  20  20  20

.TUESDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
                    rain showers.
Temperature.........Max 63.
RH..................Min 54 percent.
Wind (20 ft)........North winds 10 to 15 mph with gusts to around
                    28 mph.
CWR.................0 percent.
Mixing height.......3300 to 3800 ft agl.
Transport winds.....North 20 to 25 mph.
Smoke dispersal.....Good.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........90  91  92  92  85  77  70  66  61  57  61  64
Weather cov.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............47  48  50  53  55  56  58  61  62  63  63  63
RH..............92  88  85  78  73  68  64  59  55  54  54  54
20 FT wind dir..N   N   N   N   N   N   N   N   N   N   N   N
20 FT wind spd..10  10  10  12  13  13  14  14  14  14  14  14
20 FT wind gust.22  23  23  24  25  25  26  28  28  28  26  25
Mix hgt (kft)...1.4 1.5 1.6 1.8 1.9 2.1 2.3 2.8 3.3 3.8 3.5 3.2
Transp wind dir.N   N   N   N   N   N   N   N   N   N   N   N
Transp wind spd.20  20  21  22  22  23  24  25  25  25  24  23

$$
Forecaster...JC
Requested by...Eric OConnor
Type of request...PRESCRIBED
.TAG 2512940.0/UNR
.DELDT 05/05/25
.FormatterVersion 2.0.0
.EMAIL eric.oconnor@rcgov.org