586
FNUS73 KDVN 201522
FWSDVN
SPOT FORECAST FOR LOST GROVE LAKE PRESCRIBED FIRE...IOWA DNR
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
1022 AM CDT MON APR 20 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE
NATIONAL WEATHER SERVICE QUAD CITIES AT (563) 386-3815.
DISCUSSION
A WIDESPREAD FROST/HARD FREEZE EARLY THIS MORNING WILL GIVE WAY TO
TEMPERATURES WARMING TO THE MIDDLE 50S OVER NORTHWEST ILLINOIS TO
THE MIDDLE 60S OVER FAR SOUTHEASTERN IOWA/WEST-CENTRAL
ILLINOIS/NORTHEAST MISSOURI. SOUTHERLY WINDS TODAY WILL BE AROUND 10
TO 20 MPH, WITH MINIMUM RH VALUES BETWEEN 30 TO 40 PERCENT.
MOSTLY DRY CONDITIONS WILL PREVAIL THROUGH WEDNESDAY NIGHT, WITH
PERHAPS A LOW TO MEDIUM CHANCE (10-40%) OF A SHOWER OR STORM TUESDAY
PM SOUTH OF INTERSTATE 80.
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.........SUNNY (10-20 PERCENT).
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
BEGIN/END OF PCPN...NONE
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........29 PERCENT.
MAX APPARENT TEMP...59.
EYE LEVEL WINDS.....SOUTH WINDS 5 TO 7 MPH.
WIND SHIFT..........NONE
WIND (20 FT)........SOUTH WINDS 8 TO 12 MPH.
MIXING HEIGHT.......4400 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 15 MPH.
SMOKE DISPERSAL.....FAIR (27400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (51200 KNOT-FT) IN THE
AFTERNOON.
GFDI................2.
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........3 2 2 4 3 13 26
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0
TEMP............48 51 53 55 57 58 59
RH..............35 33 32 30 29 30 30
APARNT TMP (F)..44 51 53 55 57 58 59
20 FT WIND DIR..SE S S S S S S
20 FT WIND SPD..8 8 9 10 10 12 12
20 FT WIND GUST.10 12 13 14 15 16 16
EYE LVL WND DIR.SE S S S S S S
EYE LVL WND SPD.5 5 5 6 6 7 7
EYE LVL WND GST.6 7 8 8 9 10 10
MIX HGT (KFT)...3.9 4.4 4.4 4.3 4.3 4.1 3.9
TRANSP WIND DIR.S S SW SW S S S
TRANSP WIND SPD.8 8 9 10 10 12 15
GFDI............1 1 1 2 2 2 2
SDSPL KT-FT/100027 31 35 39 38 41 51
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
BEGIN/END OF PCPN...NONE
MIN TEMPERATURE.....AROUND 48.
MAX HUMIDITY........74 PERCENT.
MAX APPARENT TEMP...58.
EYE LEVEL WINDS.....SOUTH WINDS 6 TO 8 MPH.
WIND SHIFT..........TURNING TO THE SOUTHWEST BETWEEN 5 AM AND 7 AM.
WIND (20 FT)........SOUTH WINDS 10 TO 14 MPH.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH 14 TO 20 MPH.
SMOKE DISPERSAL.....GOOD (43400 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (5700 KNOT-FT) LATE IN THE
NIGHT.
GFDI................2.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........27 24 16 36 47 39
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0
TEMP............58 54 50 50 50 50
RH..............33 43 54 56 66 71
APARNT TMP (F)..58 54 45 45 45 45
20 FT WIND......S 12 S 10 S 13 S 14 S 14 S 13
20 FT WIND GUST.16 15 18 21 24 22
EYE LEVEL WIND..S 7 S 6 S 8 S 8 S 8 S 8
EYE LVL WND GST.10 9 11 13 14 13
MIX HGT (FT)....3100 600 500 600 600 600
TRANSPORT WIND..S 16 S 14 S 16 S 17 S 20 SW 18
GFDI............2 1 1 2 2 1
SDSPL KT-FT/100043 7 7 9 10 9
TUESDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS LATE IN THE AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
BEGIN/END OF PCPN...AFTER 3 PM
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........46 PERCENT.
MAX APPARENT TEMP...76.
EYE LEVEL WINDS.....SOUTHWEST WINDS 8 TO 9 MPH.
WIND SHIFT..........TURING FROM THE SOUTHWEST TO WEST SOUTHWEST AFTER 4 PM.
WIND (20 FT)........SOUTHWEST WINDS 13 TO 15 MPH.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 16 TO 23 MPH.
SMOKE DISPERSAL.....POOR (9600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (67300 KNOT-FT) IN THE
AFTERNOON.
GFDI................2.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........21 35 25 24 26 30
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 10
CHC OF THDR (%).0 0 0 0 0 0
TEMP............50 54 63 70 75 76
RH..............71 69 58 51 46 46
APARNT TMP (F)..45 54 63 70 75 76
20 FT WIND......SW 13 SW 14 SW 15 SW 15 SW 14 W 14
20 FT WIND GUST.22 24 23 22 21 20
EYE LEVEL WIND..SW 8 SW 8 SW 9 SW 9 SW 8 W 8
EYE LVL WND GST.13 14 14 13 13 12
MIX HGT (FT)....600 900 2100 3100 3800 3700
TRANSPORT WIND..SW 18 SW 18 SW 23 SW 21 SW 20 W 18
GFDI............1 2 2 3 3 3
SDSPL KT-FT/100010 15 42 55 65 60
FORECASTER...COUSINS
REQUESTED BY...JARON SHOOK
TYPE OF REQUEST...PRESCRIBED
.TAG 2610895.0/DVN
.DELDT 04/20/26
.FORMATTERVERSION 2.0.0
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