FNUS73 KDTX 261412
FWSDTX

SPOT FORECAST FOR RUTHVEN CONTROLLED BURN...ANN ARBOR PARKS
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1012 AM EDT FRI APR 26 2013

FORECAST IS BASED ON IGNITION TIME OF 1300 EDT ON APRIL 26.

IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SURFACE HIGH PRESSURE WILL PASS THROUGH THE OHIO RIVER VALLEY TODAY
BUILDING OVER EASTERN LAKE ERIE THIS AFTERNOON. A WEAK SURFACE TROUGH
AND FRONTAL BOUNDARY WILL THEN SLIP INTO THE CENTRAL GREAT LAKES
TONIGHT STALLING OVER THE REGION. PREDOMINATELY DRY WEATHER CAN BE
EXPECTED THIS WEEKEND. MINIMUM RH VALUES WILL REACH 30 TO 40 PERCENT
BOTH FRIDAY AND SATURDAY AFTERNOONS...WITH WIND GUSTS OF ROUGHLY 15
KNOTS.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (35-45 PERCENT).
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........35 PERCENT.
EYE LEVEL WINDS.....SOUTH WINDS 7 TO 12 MPH.
TRANSPORT WINDS.....SOUTH 2 TO 8 MPH...INCREASING TO 12 TO 18 MPH
                    BY LATE MORNING.
MIXING HEIGHT.......5500 FT AGL.
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.
VENTILATION RATE....GOOD (MAX...500).

TIME (EDT)      1PM 2PM 3PM 4PM 5PM 6PM 7PM
SKY (%).........44  49  47  46  44  43  41
WEATHER COV.....
WEATHER TYPE....
TEMP............56  57  59  60  60  59  58
RH..............38  37  36  35  36  37  39
EYE LVL WND DIR.S   S   S   S   S   S   S
EYE LVL WND SPD.9   10  10  10  10  9   9
EYE LVL WND GST.15  20  20  20  20  15  15
MIX HGT (KFT)...3.9 4.2 4.2 4.2 4.1 4.0 3.8
HAINES INDEX....4   4   4   4   4   4   4
VRATE (KT-FT)...400 400 500 500 500 500 400

$$
FORECASTER...FREITAG
REQUESTED BY...DAVID BORNEMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20130426.RUTHV.01/DTX