290  
FNUS73 KDVN 011410  
FWSDVN  
 
SPOT FORECAST FOR USACE- CORALVILLE LAKE...US ARMY CORPS OF ENGINEERS  
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL  
810 AM CST THU DEC 1 2022  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 CST ON DECEMBER 01.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE  
NATIONAL WEATHER SERVICE QUAD CITIES AT (563) 386-3815.  
   
DISCUSSION
 
 
THE PRIMARY CONCERN OVER THE NEXT 24-48 HOURS WILL BE WINDS,  
AS A STRONG COLD FRONT MOVES INTO THE AREA. SOUTH WINDS WILL  
INCREASE TODAY, WITH PM GUSTS AROUND 30-35 MPH. WINDS WILL  
BE STRONGER FRIDAY AFTERNOON AND EVENING, WITH GUSTS AROUND  
40 MPH DURING THE AFTERNOON INCREASING TO AROUND 40-50 MPH  
DURING THE EVENING. ANY CHANCES FOR RAIN WILL BE LOW.  
 
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 (15-25 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
BEGIN/END OF PCPN...N/A.  
MAX TEMPERATURE.....AROUND 41.  
MIN HUMIDITY........33 PERCENT.  
MIN APPARENT TEMP...6.  
EYE LEVEL WINDS.....SOUTHEAST WINDS UP TO 10 MPH SHIFTING TO THE  
SOUTH 10 TO 15 MPH IN THE AFTERNOON.  
WIND SHIFT..........SOUTHEAST TO SOUTH.  
WIND (20 FT)........SOUTH WINDS 10 TO 20 MPH.  
MIXING HEIGHT.......2000 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 15 MPH INCREASING TO SOUTH 15 TO  
25 MPH IN THE LATE MORNING AND AFTERNOON.  
GFDI................HIGH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
TIME (CST) 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........34 27 8 4 3  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0  
LAL.............1 1 1 1 1  
TEMP............15 24 34 39 40  
RH..............81 60 41 34 34  
APARNT TMP (F)..6 13 23 29 31  
20 FT WIND......SE 6 S 12 S 17 S 20 S 18  
20 FT WIND GUST. 17 26 30 28  
EYE LEVEL WIND..SE 4 S 7 S 10 S 12 S 11  
EYE LVL WND GST. 10 16 18 17  
MIX HGT (FT)....300 1100 1500 2000 1200  
TRANSPORT WIND..SE 7 S 17 S 20 S 24 S 25  
GFDI............M M M M M  
HAINES INDEX....4 4 4 4 4  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
LAL.................1.  
BEGIN/END OF PCPN...N/A.  
MIN TEMPERATURE.....AROUND 31.  
MAX HUMIDITY........61 PERCENT.  
MIN APPARENT TEMP...23.  
EYE LEVEL WINDS.....SOUTH WINDS 5 TO 10 MPH.  
WIND SHIFT..........N/A.  
WIND (20 FT)........SOUTH WINDS 10 TO 20 MPH.  
MIXING HEIGHT.......800 FT AGL.  
TRANSPORT WINDS.....SOUTH 20 TO 25 MPH.  
GFDI................LOW.  
HAINES INDEX........3 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........4 5 6 6 14 26  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0  
LAL.............1 1 1 1 1 1  
TEMP............37 35 33 33 33 34  
RH..............42 47 53 56 53 54  
APARNT TMP (F)..27 25 23 23 23 25  
20 FT WIND......S 17 S 16 S 15 S 14 S 14 S 14  
20 FT WIND GUST.26 24 23 21 21 21  
EYE LEVEL WIND..S 10 S 10 S 9 S 8 S 8 S 8  
EYE LVL WND GST.16 14 14 13 13 13  
MIX HGT (FT)....900 900 900 800 800 800  
TRANSPORT WIND..S 22 S 22 S 22 S 23 S 22 S 23  
GFDI............M M M M M M  
HAINES INDEX....4 4 4 3 3 3  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).  
CHANCE OF PCPN......10 PERCENT.  
LAL.................1.  
BEGIN/END OF PCPN...N/A.  
MAX TEMPERATURE.....AROUND 52.  
MIN HUMIDITY........54 PERCENT.  
MIN APPARENT TEMP...24.  
EYE LEVEL WINDS.....SOUTH WINDS 5 TO 15 MPH. GUSTS UP TO 35 MPH IN  
THE AFTERNOON.  
WIND SHIFT..........N/A.  
WIND (20 FT)........SOUTH WINDS 15 TO 25 MPH. GUSTS UP TO 35 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......2400 FT AGL.  
TRANSPORT WINDS.....SOUTH 20 TO 30 MPH INCREASING TO 30 TO 40 MPH  
IN THE LATE MORNING AND EARLY AFTERNOON, THEN  
DECREASING TO 20 TO 25 MPH LATE IN THE  
AFTERNOON.  
GFDI................HIGH.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........43 23 51 67 68 67  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CHC OF PCPN (%).10 10 10 10 10 10  
LAL.............1 1 1 1 1 1  
TEMP............34 36 43 48 51 51  
RH..............58 61 62 65 66 71  
APARNT TMP (F)..24 26 35 41 51 51  
20 FT WIND......S 15 S 17 S 20 S 22 S 22 SW 20  
20 FT WIND GUST.23 26 30 33 32 29  
EYE LEVEL WIND..S 9 S 10 S 12 S 13 S 13 SW 12  
EYE LVL WND GST.14 16 18 20 19 17  
MIX HGT (FT)....900 1100 2000 2400 2000 1600  
TRANSPORT WIND..S 23 S 26 S 36 S 36 S 33 S 24  
GFDI............M M M M M M  
HAINES INDEX....3 3 3 3 3 3  
 

 
FORECASTER...SPECK  
REQUESTED BY...ZACHARY SCRIVER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2222053.0/DVN  
.DELDT 12/01/22  
.FORMATTERVERSION 2.0.0  
 
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