497  
FNUS73 KOAX 291431  
FWSOAX  
 
SPOT FORECAST FOR OMAHA CRP RX...BIA-WINNEBAGO  
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE  
931 AM CDT WED SEP 29 2021  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON SEPTEMBER 29.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
REDUCED FIRE CONCERNS TODAY WITH INCREASED CLOUD COVER, TEMPS IN  
THE 80S, AND A BUILDING CHANCE FOR SHOWERS. THOSE SHOWERS ARE EXPECTED  
TO SLOWLY BUILD IN FROM THE NORTHWEST OVER THE COURSE OF THE DAY,  
BECOMING LIKELY LATER TONIGHT.  
 
SOUTHEASTERLY WINDS WILL TURN NORTHWEST OVERNIGHT.  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS LATE IN THE  
AFTERNOON.  
TEMPERATURE.........70 AT IGNITION...MAX 85.  
RH..................63 PERCENT AT IGNITION...MIN 43 PERCENT.  
EYE LEVEL WINDS.....SOUTH WINDS 5 TO 8 MPH. GUSTS UP TO 22 MPH IN  
THE AFTERNOON.  
20 FOOT WIND........WINDS SOUTHEAST AT 7 MPH AT  
IGNITION...OTHERWISE SOUTHEAST WINDS 9 TO 12  
MPH. GUSTS UP TO 22 MPH IN THE AFTERNOON. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
LATE IN THE AFTERNOON.  
30 FOOT WINDS (MPH).SOUTH WINDS 9 TO 14 MPH. GUSTS UP TO 22 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......1100 FT AGL AT IGNITION...OTHERWISE 5600 FT  
AGL.  
TRANSPORT WINDS.....SOUTHEAST 9 TO 20 MPH.  
SMOKE DISPERSAL.....FAIR /14400 KNOT-FT/ AT IGNITION.  
MAX...EXCELLENT /90500 KNOT-FT/.  
GFDI................LOW.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH AT IGNITION...MAX 4.  
 
TIME (CDT) 10 AM NOON 2 PM 4 PM  
SKY (%).........66 59 59 68  
WEATHER COV..... S CHC  
WEATHER TYPE....NONE NONE NONE RNSHWR  
TSTM COV........ S CHC  
TEMP............70 80 85 85  
RH..............63 49 43 45  
EYE LEVEL WIND..SE 5 SE 8 SE 8 S 8  
EYE LVL WND GST.7 12 13 13  
20 FT WIND......SE 7 SE 10 SE 11 S 11  
20 FT WIND GUST.10 16 17 17  
30 FT WIND......SE 9 SE 13 SE 14 S 14  
30 FT WIND GUST.12 20 21 21  
MIX HGT (FT)....1100 2000 4900 5200  
TRANSPORT WIND..SE 15 S 20 S 20 S 20  
GFDI............1 1 2 2  
HAINES INDEX....4 4 4 4  
SDSPL KT-FT/1K..14 49 81 89  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SHOWERS LIKELY  
IN THE EVENING. CHANCE OF THUNDERSTORMS THROUGH  
THE NIGHT. SHOWERS OVERNIGHT.  
TEMPERATURE.........MIN 63.  
RH..................MAX 100 PERCENT.  
EYE LEVEL WINDS.....SOUTH WINDS UP TO 7 MPH DECREASING TO SOUTHEAST  
AROUND 4 MPH EARLY IN THE EVENING, THEN  
BECOMING LIGHT LATE IN THE EVENING.  
20 FOOT WIND........SOUTHEAST WINDS AROUND 10 MPH DECREASING TO 5  
TO 7 MPH IN THE EVENING, THEN BECOMING LIGHT  
LATE IN THE EVENING. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS.  
30 FOOT WINDS (MPH).SOUTHEAST WINDS AROUND 11 MPH DECREASING TO 6  
TO 8 MPH IN THE EVENING, THEN BECOMING LIGHT  
LATE IN THE EVENING.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH SHIFTING TO THE SOUTH  
12 TO 15 MPH IN THE EVENING, THEN SHIFTING TO  
THE WEST 6 TO 7 MPH OVERNIGHT SHIFTING TO THE  
EAST AROUND 8 MPH AFTER 3 AM SHIFTING TO THE  
NORTH AROUND 9 MPH SHIFTING TO THE WEST AROUND  
7 MPH EARLY IN THE MORNING.  
SMOKE DISPERSAL.....GOOD (39800 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (2900 KNOT-FT) LATE IN THE  
NIGHT.  
GFDI................LOW.  
HAINES INDEX........3 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........63 64 72 75 79 83  
WEATHER COV.....S CHC CHANCE CHANCE LIKELY DEFNTE DEFNTE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........S CHC CHANCE CHANCE CHANCE CHANCE CHANCE  
TEMP............83 73 70 66 64 63  
RH..............49 73 84 97 100 100  
EYE LEVEL WIND..SE 7 SE 4 SE 4 N 3 N 3 N 1  
EYE LVL WND GST.10 5 5 4 4 3  
20 FT WIND......SE 9 SE 5 SE 5 N 4 N 4 N 2  
20 FT WIND GUST.14 7 6 6 6 4  
30 FT WIND......SE 11 SE 6 SE 6 N 5 N 5 N 3  
30 FT WIND GUST.17 9 8 7 7 5  
MIX HGT (FT)....2900 700 700 600 600 500  
TRANSPORT WIND..SE 15 SE 14 S 13 W 7 W 6 N 9  
GFDI............1 0 0 0 0 0  
HAINES INDEX....4 4 4 4 3 3  
SDSPL KT-FT/1K..40 7 7 4 3 4  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS.  
TEMPERATURE.........MAX 73.  
RH..................MIN 73 PERCENT.  
EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTHWEST AROUND 4 MPH IN  
THE LATE MORNING AND AFTERNOON.  
20 FOOT WIND........WEST WINDS 5 TO 7 MPH EARLY IN THE MORNING  
BECOMING LIGHT, THEN BECOMING WEST 5 TO 7 MPH  
IN THE LATE MORNING AND AFTERNOON. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.  
30 FOOT WINDS (MPH).LIGHT WINDS BECOMING NORTHWEST 6 TO 8 MPH IN  
THE LATE MORNING AND AFTERNOON.  
MIXING HEIGHT.......2700 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 7 MPH DECREASING TO 2 TO 7 MPH  
EARLY IN THE MORNING, THEN SHIFTING TO THE  
SOUTHEAST AROUND 13 MPH LATE IN THE MORNING  
SHIFTING TO THE NORTHWEST AROUND 7 MPH LATE IN  
THE MORNING SHIFTING TO THE SOUTH AROUND 8 MPH  
SHIFTING TO THE NORTHWEST 9 TO 12 MPH LATE IN  
THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (1700 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (20300 KNOT-FT) IN THE  
AFTERNOON.  
GFDI................LOW.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........83 84 84 72 70 74  
WEATHER COV.....LIKELY LIKELY LIKELY LIKELY LIKELY LIKELY  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE  
TEMP............63 63 66 70 72 73  
RH..............97 100 93 81 76 73  
EYE LEVEL WIND..N 1 N 1 N 4 NW 4 NW 4 NW 4  
EYE LVL WND GST.3 3 5 5 6 7  
20 FT WIND......N 2 N 2 N 5 NW 5 NW 6 NW 6  
20 FT WIND GUST.4 4 6 6 8 10  
30 FT WIND......N 3 N 3 N 6 NW 6 NW 8 NW 8  
30 FT WIND GUST.5 5 8 8 10 12  
MIX HGT (FT)....500 500 1300 2000 2500 2500  
TRANSPORT WIND..W 7 W 2 SE 13 S 8 NW 9 NW 9  
GFDI............0 0 0 0 0 1  
HAINES INDEX....3 3 3 3 3 3  
SDSPL KT-FT/1K..2 6 15 15 17 20  
   
FORECAST DAYS 3 THROUGH 5
 
   
FRIDAY
 
 
MOSTLY CLOUDY WITH SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS.  
LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 70S. LIGHT WINDS.    
SATURDAY
 
 
MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 70S.  
LIGHT WINDS.    
SUNDAY
 
 
MOSTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE LOWER 50S. HIGHS  
AROUND 70. NORTH WINDS AROUND 6 MPH.  
 

 
FORECASTER...KG  
REQUESTED BY...DUWAYNE TRAVERSIE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2118874.0/OAX  
.DELDT 09/29/21  
.FORMATTERVERSION 1.0.26  
 
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