FNUS73 KUNR 041911
FWSUNR

SPOT FORECAST FOR LEAD FIREWORKS...LEAD FIRE DEPARTMENT
NATIONAL WEATHER SERVICE RAPID CITY SD
111 PM MDT SAT JUL 4 2009

FORECAST IS BASED ON IGNITION TIME OF 2130 MDT ON JULY 04.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE
THIS AFTERNOON AND EVENING. OTHERWISE THE WEATHER IS EXPECTED TO
COOPERATE FOR TONIGHTS FIREWORK SHOW. PARTLY CLOUDY SKIES ARE
EXPECTED (AND YES...WITH NO FOG) WITH TEMPERATURES IN THE UPPER
50S TO LOWER 60S. NORTHEAST WINDS AT 5 TO 10 MPH THIS AFTERNOON
WILL SLOWLY SWITCH TO THE SOUTH EARLY THIS EVENING AT 5 TO 10 MPH
BY SHOW TIME.

.REST OF TODAY...

SKY/WEATHER.........PARTLY SUNNY. SCATTERED THUNDERSTORMS.
TEMPERATURE.........MAX 69.
RH..................MIN 49 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 7 TO 8 MPH.
CWR.................12 PERCENT.
LAL.................3.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3000 TO 4000 FT AGL.
TRANSPORT WINDS.....NORTH 5 TO 10 MPH.
SMOKE DISPERSAL.....FAIR.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. NO FOG. SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE EVENING...THEN SLIGHT
                    CHANCE OF SHOWERS AND THUNDERSTORMS AFTER
                    MIDNIGHT.
TEMPERATURE.........60 AT IGNITION...MIN 52.
RH..................72 PERCENT AT IGNITION...MAX 83 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH EARLY IN THE
                    EVENING...BECOMING SOUTH 5 TO 10 MPH BY
                    PLANNED FIREWORK IGNITION TIME...THEN SOUTHWEST
                    5 TO 10 MPH BY MIDNIGHT.
CWR.................11 PERCENT.
LAL.................3 UNTIL 2400...THEN 2.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....NORTHEAST AROUND 6 MPH SHIFTING TO THE SOUTH 5
                    TO 10 MPH DURING THE EVENING.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...CALDERON
REQUESTED BY...TIM EGGERS FIRE CHIEF
TYPE OF REQUEST...PRESCRIBED
.TAG 20090704.LEADF.01/UNR