506
FNUS73 KDVN 272130
FWSDVN

Spot Forecast for 3D, E, G...Johnson County Conservation
National Weather Service Quad Cities IA/IL
430 PM CDT Thu Mar 27 2025

Forecast is based on ignition time of 0900 CDT on March 27.
If conditions become unrepresentative...contact the
National Weather Service Quad Cities at (563) 386-3815.

.DISCUSSION...

A few showers and storms will linger into early this evening, mainly
across far southeast Iowa and northeast Missouri. Additional
storms are expected overnight into early Friday, with isolated
large hail the main hazard. Much warmer and windy conditions will
be seen Friday, with an elevated fire danger risk in the afternoon.

The Grassland Fire Danger Index -GFDI- does not account for
precipitation that occurs or any snow on the ground. Please
make appropriate adjustments.


.REST OF TODAY...

Sky/weather.........Cloudy (90-100 percent) then becoming partly
                    sunny (60-70 percent).
Chance of pcpn......10 percent.
Chance of thunder...10 percent.
Begin/end of pcpn...
Max temperature.....Around 64.
Min humidity........54 percent.
Max apparent temp...64.
Eye level winds.....Southeast winds 6 to 10 mph.
Wind shift..........
Wind (20 ft)........Southeast winds 10 to 16 mph.
Mixing height.......2900 ft AGL.
Transport winds.....South 16 to 21 mph.
GFDI................6.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........95  95  68  68  68  65  65  65  65
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10  10  10  10  10  10  10  10  10
Chc of thdr (%).M   M   M   M   M   M   M   M   M
Temp............48  52  54  56  56  59  63  64  62
RH..............58  54  54  64  69  62  54  56  59
Aparnt tmp (F)..43  52  54  56  56  59  63  64  62
20 FT wind dir..S   SE  S   S   S   S   SE  SE  SE
20 FT wind spd..10  12  16  15  15  15  15  15  15
20 FT wind gust.20  21  24  23  23  23  23  23  23
Eye lvl wnd dir.S   SE  S   S   S   S   SE  SE  SE
Eye lvl wnd spd.6   7   10  9   9   9   9   9   9
Eye lvl wnd gst.12  13  14  14  14  14  14  14  14
Mix hgt (kft)...0.6 1.0 1.6 2.5 2.9 2.9 2.8 2.4 1.8
Transp wind dir.S   S   S   S   S   S   S   S   S
Transp wind spd.20  20  21  21  20  17  17  16  16
GFDI............4   5   8   7   6   7   8   8   8

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent). Scattered rain
                    showers and chance of thunderstorms through the
                    night.
Chance of pcpn......50 percent.
Chance of thunder...30 percent.
Begin/end of pcpn...
Min temperature.....Around 49.
Max humidity........100 percent.
Max apparent temp...60.
Eye level winds.....Southeast winds 6 to 8 mph shifting to the
                    south around 7 mph early in the morning.
Wind shift..........
Wind (20 ft)........Southeast winds 10 to 14 mph shifting to the
                    south around 12 mph early in the morning. Gusty
                    and erratic winds expected near thunderstorms
                    early in the evening. Gusty and erratic winds
                    expected near thunderstorms after 3 am.
Mixing height.......400 ft AGL.
Transport winds.....Southeast 13 to 16 mph.
GFDI................5.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........65     67     70     73     68     57
Weather cov.....       ISOLTD SCTTRD CHANCE CHANCE CHANCE
Weather type....NONE   RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........       S CHC  CHANCE CHANCE CHANCE S CHC
Chc of pcpn (%).10     20     30     40     50     30
Chc of thdr (%).M      M      M      M      M      M
Temp............60     56     51     51     50     51
RH..............63     69     86     89     93     93
Aparnt tmp (F)..60     56     51     51     46     51
20 ft wind......SE 14  SE 10  SE 10  SE 12  SE 10  S 10
20 ft wind gust.21     16     16     17     16     16
Eye level wind..SE 8   SE 6   SE 6   SE 7   SE 6   S 6
Eye lvl wnd gst.13     10     10     10     10     10
Mix hgt (ft)....1700   800    600    400    400    400
Transport wind..SE 16  SE 14  SE 15  SE 16  S 14   S 15
GFDI............7      3      3      3      2      2

.FRIDAY...

Sky/weather.........Sunny (20-30 percent). Slight chance of rain
                    showers early in the morning.
Chance of pcpn......20 percent.
Chance of thunder...10 percent.
Begin/end of pcpn...
Max temperature.....Around 79.
Min humidity........44 percent.
Max apparent temp...79.
Eye level winds.....Breezy. South winds 8 to 13 mph shifting to the
                    southwest 14 to 15 mph with gusts to around 23
                    mph in the late morning and afternoon.
Wind shift..........
Wind (20 ft)........Breezy. Southwest winds 15 to 25 mph with gusts
                    to around 38 mph.
Mixing height.......3800 ft AGL.
Transport winds.....Southwest 18 to 22 mph increasing to 29 to 37
                    mph in the late morning and afternoon.
GFDI................7 increasing to 32.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........45     29     7      5      5      8
Weather cov.....S CHC
Weather type....RNSHWR NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).20     10     10     0      0      0
Chc of thdr (%).M      M      M      M      M      M
Temp............51     55     65     72     77     79
RH..............100    96     73     57     47     44
Aparnt tmp (F)..51     55     65     72     77     79
20 ft wind......S 13   SW 17  SW 23  SW 24  SW 24  SW 25
20 ft wind gust.20     26     35     37     37     38
Eye level wind..S 8    SW 10  SW 14  SW 14  SW 14  SW 15
Eye lvl wnd gst.12     16     21     22     22     23
Mix hgt (ft)....600    900    2000   3200   3500   3800
Transport wind..SW 18  SW 22  SW 33  SW 36  SW 36  SW 37
GFDI............3      6      15     24     31     36

$$
Forecaster...Ervin
Requested by...Jeremy Rieck
Type of request...PRESCRIBED
.TAG 2508209.0/DVN
.DELDT 03/27/25
.FormatterVersion 2.0.0