827
FNUS74 KSJT 271131
FWSSJT
SPOT FORECAST FOR JETTON RX BT/ST...ULPBA
NATIONAL WEATHER SERVICE SAN ANGELO TX
631 AM CDT MON AUG 27 2018
FORECAST IS BASED ON IGNITION TIME OF 0700 CDT ON AUGUST 27.
PLEASE CONTACT OUR OFFICE AT 325-944-3030 IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
LIGHT SOUTH WINDS GENERALLY LESS THAN 6 MPH AT 6 AM CDT WILL
INCREASE TO AROUND 10 MPH AROUND 10 AM CDT THIS MORNING . A FEW
GUSTS TO 18 MPH CAN BE EXPECTED FROM 10 AM CDT TO 7 PM CDT. MINIMUM RH
VALUES AROUND 33 PERCENT CAN BE EXPECTED BETWEEN 4 TO 5 PM CDT.
..412 AM CDT MORNING DISCUSSION BELOW
HOT AND DRY CONDITIONS WILL CONTINUE UNDER AN UPPER LEVEL RIDGE
THIS WEEK. SOUTHEAST TO SOUTH WINDS OF 10 TO 15 MPH WITH
OCCASIONAL DAYTIME GUSTS TO 25 MPH CAN BE EXPECTED EACH DAY, ALONG
WITH MINIMUM RELATIVE HUMIDITY VALUES 25 TO 30 PERCENT.
REST OF TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
LAL.................NO TSTMS.
MAX TEMPERATURE.....AROUND 96.
MIN HUMIDITY........33 PERCENT.
WIND (20 FT)........SOUTH WINDS 8 TO 10 MPH.
MIXING HEIGHT.......300-1600 FT AGL INCREASING TO 7000-7400 FT AGL.
TRANSPORT WINDS.....SOUTH 12 TO 17 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (2700-34000 KNOT-FT) INCREASING TO
GOOD TO EXCELLENT (54400-97500 KNOT-FT) LATE IN
THE MORNING.
HAINES INDEX........2 TO 4 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR
LARGE PLUME DOMINATED FIRE GROWTH.
TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).............34 20 12 3 4 5
WEATHER COV.........
WEATHER TYPE........NONE NONE NONE NONE NONE NONE
TSTM COV............
LAL.................1 1 1 1 1 1
TEMP................71 76 85 92 96 96
RH..................93 79 57 43 34 33
20 FT WIND DIR......S S S S S S
20 FT WIND SPD......8 10 10 9 9 10
20 FT WIND GUST.....11 13 13 12 12 13
MIX HGT (FT)........300 1600 3600 6400 7100 7000
TRANSPORT WIND.....S 12 S 16 S 17 S 15 S 15 S 16
HAINES INDEX........2 2 2 4 4 4
SDSPL KT-FT/1000....3 22 54 83 92 98
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
LAL.................NO TSTMS.
MIN TEMPERATURE.....AROUND 71.
MAX HUMIDITY........93 PERCENT.
WIND (20 FT)........SOUTH WINDS 7 TO 10 MPH.
MIXING HEIGHT.......6000-6500 FT AGL DECREASING TO 100-800 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 17 MPH SHIFTING TO THE SOUTH 18
TO 21 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (48800-91100 KNOT-FT)
DECREASING TO POOR TO FAIR (900-18800 KNOT-FT)
IN THE LATE EVENING AND OVERNIGHT.
HAINES INDEX........3 TO 4 OR OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH TO OR LOW POTENTIAL FOR
LARGE PLUME DOMINATED FIRE GROWTH.
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).............4 3 4 3 7 21
WEATHER COV.........
WEATHER TYPE........NONE NONE NONE NONE NONE NONE
TSTM COV............
LAL.................1 1 1 1 1 1
TEMP................95 89 83 81 77 74
RH..................34 42 53 63 76 87
20 FT WIND DIR......S S SE SE S S
20 FT WIND SPD......10 10 7 10 10 10
20 FT WIND GUST.....15 13 10 13 17 13
MIX HGT (FT)........6500 4100 100 600 700 500
TRANSPORT WIND.....S 16 S 14 SE 9 S 17 S 21 S 18
HAINES INDEX........4 4 4 4 3 3
SDSPL KT-FT/1000....91 49 1 9 13 8
TUESDAY
MAX TEMPERATURE.....AROUND 95.
MIN HUMIDITY........34 PERCENT.
WIND (20 FT)........SOUTH WINDS 8 TO 12 MPH.
MIXING HEIGHT.......200-1800 FT AGL INCREASING TO 5000-6700 FT AGL.
TRANSPORT WINDS.....SOUTH 15 TO 18 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (3400-40100 KNOT-FT) INCREASING TO
GOOD TO EXCELLENT (55400-91900 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
TEMP................73 72 80 88 93 95
RH..................90 90 67 50 40 35
20 FT WIND DIR......S S S S S S
20 FT WIND SPD......9 9 10 10 10 10
20 FT WIND GUST.....12 12 13 15 17 17
MIX HGT (FT)........300 700 1800 4000 5600 6700
TRANSPORT WIND.....S 18 S 17 S 16 S 16 S 16 S 15
SDSPL KT-FT/1000....5 11 25 55 78 87
FORECAST DAYS 3 THROUGH 5
WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER 70S. HIGHS IN THE MID 90S. SOUTH
WINDS AROUND 9 MPH.
THURSDAY
MOSTLY CLEAR. LOWS AROUND 70. HIGHS IN THE MID 90S. SOUTHEAST
WINDS AROUND 7 MPH.
FRIDAY
MOSTLY CLEAR. LOWS AROUND 70. HIGHS IN THE MID 90S. SOUTH WINDS
AROUND 7 MPH.
FORECASTER...DECKER
REQUESTED BY...SAM JETTON
TYPE OF REQUEST...PRESCRIBED
.TAG 1815045.0/SJT
.DELDT 08/27/18
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