Fire Weather Point Forecast Matrices
Mason RAWS
Issued by NWS San Angelo, TX

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984
FOUS54 KSJT 051051
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
451 AM CST MON DEC 5 2016
TXZ170-052215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 451 AM CST MON DEC 5 2016 DATE MON 12/05/16 TUE 12/06/16 WED 12/07/16 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 CST 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MAX/MIN 53 38 57 41 63 TEMP 43 45 51 53 47 43 41 40 38 42 53 57 51 46 44 43 41 45 58 63 50 DEWPT 43 44 46 48 47 43 41 40 38 40 41 41 42 42 41 41 40 41 43 44 45 MIN/MAX RH 80 100 55 100 50 RH 100 96 83 83100100100100100 93 64 55 71 86 89 93 96 86 57 50 83 WIND DIR N N NW W W SW W W W NW NW N NE NE E SE SE E E NE N WIND SPD 5 3 3 6 4 3 6 8 6 6 6 5 5 4 4 3 3 3 3 3 4 CLOUDS OV OV OV OV B1 FW CL CL CL FW FW FW SC SC SC SC SC SC B1 B1 B1 CLOUDS(%) 98 94 92 89 60 7 4 2 2 6 13 8 31 34 29 41 40 50 59 55 68 POP 12HR 80 5 0 5 5 QPF 12HR 0.28 0 0 0 0 RAIN SHWRS D D D D TSTMS LAL 1 1 1 1 1 1 1 1 1 1 HAINES 3 2 5 5 5 5 5 5 4 5 MIX HGT 2700 2500 1000 300 1600 2000 1300 900 1300 2300 T WIND DIR N W W W NW N NE E S W T WIND SPD 8 8 11 12 11 12 9 3 6 8 SMOKE DISP PR PR PR PR PR PR PR PR PR PR DATE THU 12/08/16 FRI 12/09/16 SAT 12/10/16 SUN 12/11/16 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CST 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 MIN/MAX 29 39 24 44 31 55 43 66 TEMP 36 29 37 33 27 24 39 39 34 31 49 50 46 43 61 58 DEWPT 34 22 20 17 15 14 18 23 25 28 36 44 43 43 45 47 MAX/MIN RH 96 42 68 39 96 56 100 48 RH 92 75 50 51 60 65 42 52 69 88 61 80 89 100 56 67 PWIND DIR N N NE E S S SW SW WIND CHAR <15 15> <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B2 B2 B1 SC FW FW FW FW FW SC SC FW SC SC FW POP 12HR 10 10 0 0 0 0 5 0 $$ BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT DAY 1 THROUGH 3... MAX/MIN TEMP OR MIN/MAX TEMP(F).....MAXIMUM/MINIMUM AIR TEMPERATURE TEMP(F).............................AIR TEMPERATURE DEWPT(F)............................DEW POINT TEMPERATURE MIN/MAX RH OR MAX/MIN RH(%).........MAXIMUM/MINIMUM HUMIDITY RH(%)...............................RELATIVE HUMIDITY WIND DIR(8 POINT COMPASS)...........20 FT. WIND DIRECTION WIND DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES RELATIVE TO DUE NORTH. EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH; 27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH WIND SPD(MPH).......................20 FT. WIND SPEED WIND GUST(MPH)......................20 FT. WIND GUST WIND CHILL..........................WIND CHILL TEMPERATURE HEAT INDX...........................HEAT INDEX CLOUDS(CAT).........................CLOUD COVER CATEGORY EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED; B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION QPF 12HR(IN)........................LIQUID EQUIVALENT PRECIPITATION AMOUNT WEATHER... TYPE... RAIN...........RAIN RAIN SHWRS.....RAIN SHOWERS TSTMS..........THUNDERSTORMS DRIZZLE........DRIZZLE SNOW...........SNOW SNOWSHWRS......SNOW SHOWERS SLEET..........SLEET FLURRIES.......FLURRIES FRZG RAIN......FREEZING RAIN FRZG DRZL......FREEZING DRIZZLE COVERAGE... S..............SLIGHT CHANCE C..............CHANCE L..............LIKELY O..............OCCASIONAL D..............DEFINITE AR.............AREAS PA.............PATCHY OBVIS...............................OBSTRUCTION TO VISIBILITY TYPE... F..............FOG PF.............PATCHY FOG F+.............DENSE FOG H..............HAZE BS.............BLOWING SNOW K..............SMOKE BD.............BLOWING DUST AF.............VOLCANIC ASHFALL LAL(CAT)............................LIGHTNING ACTIVITY LEVEL MIX HGT(FT AGL).....................MIXING HEIGHT T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION T WIND SPD(MPH).....................TRANSPORT WIND SPEED ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX DISPERSION..........................LDSI MAX LVORI...........................LVORI STA PRES (INCHES MERCURY)...........STATION PRESSURE ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX CEILING (FT)........................CEILING STABILITY (CAT).....................PASQUILL TURNER STABILITY WATCH/WARNING/ADVISORY... EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH IN EFFECT FOR THE INDICATED HOUR DAY 4 THROUGH 7... MAX/MIN TEMP OR MIN/MAX TEMP(F).....MAXIMUM/MINIMUM AIR TEMPERATURE TEMP(F).............................AIR TEMPERATURE DEWPT(F)............................DEW POINT TEMPERATURE RH(%)...............................RELATIVE HUMIDITY WIND SPD(MPH).......................20 FT. WIND SPEED EXAMPLE: <15 = LESS THAN 15 MPH; 15> = 15 MPH OR GREATER AVE CLOUDS(CAT).....................AVERAGE CLOUD COVER CATEGORY POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION WEATHER... SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS

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