FNUS73 KOAX 191103 FWSOAX SPOT FORECAST FOR LOESS HILLS WMA...IOWA DNR NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 603 AM CDT TUE MAY 19 2009 FORECAST IS BASED ON IGNITION TIME OF 0930 CDT ON MAY 19. IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER SERVICE. ...WIND ADVISORY IN EFFECT FROM NOON THROUGH 8 PM... .DISCUSSION... WINDY CONDITIONS WILL PREVAIL TODAY WITH A STRONG SOUTH WIND INCREASING TO 25 TO 30 MPH BY LATE MORNING...WITH GUSTS AS HIGH AS 40 MPH THROUGH THE AFTERNOON. A WIND ADVISORY IS IN EFFECT FOR THE AREA FROM NOON THROUGH 8 PM...AND THE GRASSLAND FIRE DANGER INDEX IS IN THE VERY HIGH CATEGORY DUE TO MINIMUM RELATIVE HUMIDITIES DROPPING TO THE UPPER 20S THROUGH PEAK HEATING. NEARLY IDENTICAL CONDITIONS ARE FORECAST FOR WEDNESDAY... HOWEVER THE FRONT SHOULD EASE SOUTHWARD INTO THE AREA WEDNESDAY NIGHT WITH A THREAT FOR THUNDERSTORMS BY DAYBREAK THURSDAY. IT WILL BE COOLER WITH A DAILY THREAT FOR RAIN THURSDAY THROUGH SUNDAY. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....73 AT IGNITION...MAX 90. MIN HUMIDITY........56 PERCENT AT IGNITION...MIN 28 PERCENT. 20-FOOT WINDS.......WINDS SOUTH AT 20 MPH AT IGNITION...OTHERWISE WINDY. SOUTH WINDS 14 TO 23 MPH INCREASING TO 25 TO 31 MPH IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 5. MIXING HEIGHT.......300-2200 FT AGL INCREASING TO 3000-4600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 26 TO 32 MPH INCREASING TO 33 TO 41 MPH EARLY IN THE MORNING. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........17 14 14 1 15 11 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............58 68 78 85 89 90 RH..............79 56 41 32 29 29 20 FT WIND......S 14 S 17 S 21 S 23 S 29 S 31 20 FT WIND GUST.20 25 30 30 40 40 HAINES INDEX....4 4 4 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (0-10 PERCENT). MIN TEMPERATURE.....MIN 62. MAX HUMIDITY........MAX 72 PERCENT. 20-FOOT WINDS.......BREEZY. SOUTH WINDS 22 TO 29 MPH. GUSTS UP TO 40 MPH EARLY IN THE EVENING. HAINES INDEX........4 TO 5 OR OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2700-3800 FT AGL DECREASING TO 600-1600 FT AGL EARLY IN THE EVENING. TRANSPORT WINDS.....SOUTH 41 TO 44 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........7 6 5 5 4 4 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............87 79 73 69 65 63 RH..............32 42 52 59 67 70 20 FT WIND......S 29 S 26 S 23 S 22 S 23 S 23 20 FT WIND GUST.40 35 30 30 30 30 HAINES INDEX....5 4 4 4 4 4 .WEDNESDAY... SKY/WEATHER.........SUNNY (10-20 PERCENT). MAX TEMPERATURE.....MAX 90. MIN HUMIDITY........MIN 28 PERCENT. 20-FOOT WINDS.......WINDY. SOUTH WINDS 23 TO 32 MPH. GUSTS UP TO 45 MPH IN THE LATE MORNING AND AFTERNOON. HAINES INDEX........4 TO 5 OR OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......600-2500 FT AGL INCREASING TO 3000-4400 FT AGL LATE IN THE MORNING. TRANSPORT WINDS.....SOUTH 41 TO 48 MPH INCREASING TO 44 TO 51 MPH IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........4 6 8 9 15 22 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............62 71 79 85 89 90 RH..............72 53 40 33 29 29 20 FT WIND......S 23 S 26 S 30 S 31 S 32 S 30 20 FT WIND GUST.30 35 40 40 45 40 HAINES INDEX....4 4 4 5 5 5 .FORECAST DAYS 3 THROUGH 5... .THURSDAY... MUCH COOLER. MOSTLY CLOUDY WITH CHANCE OF SHOWERS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 17 MPH. .FRIDAY... MOSTLY CLOUDY WITH SCATTERED THUNDERSTORMS AND CHANCE OF SHOWERS. LOWS AROUND 50. HIGHS IN THE MID 60S. NORTHEAST WINDS AROUND 10 MPH. .SATURDAY... MOSTLY CLOUDY WITH SCATTERED THUNDERSTORMS AND CHANCE OF SHOWERS. LOWS IN THE LOWER 50S. HIGHS IN THE MID 70S. EAST WINDS AROUND 8 MPH. $$ FORECASTER...NWS OMAHA/VALLEY REQUESTED BY...BRIAN HICKMAN TYPE OF REQUEST...PRESCRIBED .TAG 20090519.LOESS.01/OAX