483  
FNUS73 KGID 221035  
FWSGID  
 
SPOT FORECAST FOR MALLARD HAVEN WPA...USFWS  
NATIONAL WEATHER SERVICE HASTINGS NE  
535 AM CDT SAT APR 22 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 22.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
DEEP MIXING, LIGHT NORTHERLY WINDS AND SEASONABLE TEMPERATURES ARE  
FORECAST FOR THE BURN SITE THIS AFTERNOON. WHILE RELATIVE HUMIDITY  
VALUES WILL LIKELY DIP BELOW 30 PERCENT FOR A BRIEF PERIOD THIS  
AFTERNOON, WINDS WILL NOT BE MUCH OF CONCERN AND SHOULD REMAIN  
LESS THAN 10 MPH AS AN AREA OF HIGH PRESSURE TRANSITIONS ACROSS  
THE LOCAL AREA. STRONG SOUTHERLY WINDS ARE EXPECTED TOMORROW, WITH  
GUSTS TO 35 MPH COMBINED WITH LOWER RELATIVE HUMIDITY VALUES  
LIKELY RESULTING IN NEAR CRITICAL FIRE WEATHER CONDITIONS.  
 
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........28 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS 6 TO 8 MPH.  
MIXING HEIGHT.......300 FT AGL INCREASING TO 7400-8100 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 7 TO 13 MPH.  
HAINES INDEX........3 TO 4 OR LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO MODERATE POTENTIAL FOR  
LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM  
SKY (%).........46 45 44 38 32 27 21 16  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............55 57 59 61 63 64 65 64  
RH..............49 42 36 33 30 29 28 29  
20 FT WIND DIR..NE NE NE NE N N NE NE  
20 FT WIND SPD..7 8 8 8 8 8 8 7  
20 FT WIND GUST.10 15 15 15 15 15 15 10  
MIX HGT (KFT)...7.4 7.7 7.8 8.1 8.1 8.0 7.9 7.6  
TRANSP WIND DIR.NE NE NE NE NE NE NE NE  
TRANSP WIND SPD.13 13 12 12 10 10 10 10  
HAINES INDEX....3 4 4 4 4 4 4 4  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (0-10 PERCENT). PATCHY FROST EARLY  
IN THE MORNING.  
MIN TEMPERATURE.....AROUND 37.  
MAX HUMIDITY........85 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS AROUND 6 MPH EARLY IN THE  
EVENING BECOMING LIGHT.  
MIXING HEIGHT.......6600 FT AGL DECREASING TO 300-2100 FT AGL.  
TRANSPORT WINDS.....EAST 5 TO 9 MPH SHIFTING TO THE SOUTHWEST 5 TO  
6 MPH LATE IN THE EVENING.  
HAINES INDEX........4 TO 5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CDT) 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM  
SKY (%).........10 8 6 4 3 2 2 1 1 1 1 1  
WEATHER COV..... PTY  
WEATHER TYPE.... FST  
TSTM COV........  
TEMP............62 59 54 50 48 46 45 44 42 40 38 37  
RH..............31 36 45 56 60 65 68 68 73 79 82 85  
20 FT WIND DIR..NE NE E E SE S S SW SW SW SW SW  
20 FT WIND SPD..6 3 2 1 1 2 2 2 2 2 3 3  
20 FT WIND GUST.10 5 5 5 5 5 5 5 5 5  
MIX HGT (KFT)...6.6 4.5 2.1 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3  
TRANSP WIND DIR.NE NE NE E E SE S S S S S SW  
TRANSP WIND SPD.9 8 6 5 5 5 5 5 6 6 6 5  
HAINES INDEX....4 4 4 4 4 4 4 4 5 5 4 4  
   
SUNDAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 71.  
MIN HUMIDITY........25 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 16 TO 17 MPH WITH  
GUSTS TO AROUND 30 MPH.  
MIXING HEIGHT.......300-1200 FT AGL INCREASING TO 4000-4600 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 6 TO 14 MPH INCREASING TO SOUTH 28 TO  
31 MPH.  
HAINES INDEX........3 TO 5 OR LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO MODERATE POTENTIAL FOR  
LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM  
SKY (%).........1 4 6 9 10 11 12 14 17 19 19 20  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............39 43 49 55 60 63 66 68 70 71 71 70  
RH..............79 70 58 47 39 34 29 27 25 25 25 25  
20 FT WIND DIR..SW SW SW SW S S S S S S S S  
20 FT WIND SPD..3 6 8 9 12 13 14 15 16 17 16 16  
20 FT WIND GUST.5 10 15 20 20 25 30 30 30 30 30  
MIX HGT (KFT)...0.3 1.2 2.5 3.6 4.0 4.1 4.1 4.3 4.5 4.6 4.4 4.0  
TRANSP WIND DIR.SW SW SW SW SW S S S S S S S  
TRANSP WIND SPD.6 9 14 17 18 18 20 22 25 28 30 31  
HAINES INDEX....3 3 4 4 4 5 5 5 4 4 4 4  
 

 
FORECASTER...ROSSI  
REQUESTED BY...BRAD KROHN  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1707452.0/GID  
 
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