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

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FOUS54 KSJT 242034
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
234 PM CST SAT JAN 24 2015
TXZ170-251015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 234 PM CST SAT JAN 24 2015 DATE 01/24/15 SUN 01/25/15 MON 01/26/15 TUE UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 CST 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MIN/MAX 33 67 34 71 43 TEMP 63 55 45 40 36 35 39 57 65 61 46 40 37 34 43 67 71 66 53 48 46 43 DEWPT 32 34 34 33 32 31 34 36 34 34 34 31 32 30 34 36 38 37 37 37 37 37 MAX/MIN RH 85 31 93 29 78 RH 31 45 65 76 85 85 82 45 31 36 64 71 82 86 69 32 30 34 53 65 71 78 WIND DIR NW W W SW W W NW N N NW NW NW NW NW W W NW W W W W W WIND SPD 5 3 3 3 4 3 9 10 10 5 3 5 4 3 3 3 5 3 4 7 7 5 CLOUDS SC SC SC SC SC SC FW FW FW FW FW FW FW FW FW FW FW FW SC SC SC SC CLOUDS(%) 32 32 33 33 32 30 23 16 15 14 16 17 23 19 9 15 20 24 28 41 39 39 POP 12HR 0 0 0 0 0 QPF 12HR 0 0 0 0 0 LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 3 3 4 4 4 4 MIX HGT 3 1 <1 <1 <1 <1 <1 3 5 <1 <1 <1 <1 <1 <1 3 5 1 <1 <1 <1 <1 T WIND DIR NW W W SW W W NW N N NW NW W NW NW W NW NW W W W W W T WIND SPD 8 5 5 6 6 8 13 20 20 13 6 6 6 5 4 12 13 8 5 6 6 6 SMOKE DISP PR PR PR PR PR PR PR FR GD PR PR PR PR PR PR PR FR PR PR PR PR PR DATE 01/27/15 WED 01/28/15 THU 01/29/15 FRI 01/30/15 SAT 01/31/15 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CST 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 MAX/MIN 75 45 74 48 66 41 54 40 52 TEMP 71 69 51 45 71 69 53 48 64 61 46 41 52 51 43 40 51 50 DEWPT 38 40 40 40 46 44 46 45 43 39 35 32 32 33 37 38 43 40 MIN/MAX RH 27 88 35 89 39 71 45 96 65 RH 30 35 66 82 41 40 77 89 47 44 65 70 45 50 79 92 73 67 PWIND DIR W SW SW SW N NE NE E E WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC FW FW FW FW FW SC SC B1 B2 B2 B2 B2 B2 B2 B2 B2 POP 12HR 0 0 0 5 5 5 10 30 40 RAIN SHWRS IS IS SC SC SC SC $$ 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 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... IS.............ISOLATED SC.............SCATTERED NM.............NUMEROUS O..............OCCASIONAL S..............SLIGHT CHANCE C..............CHANCE L..............LIKELY WD.............WIDESPREAD 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 HAINES(CAT).........................HAINES INDEX 10K WIND DIR(8 POINT COMPASS).......10000 FOOT WIND DIRECTION 10K WIND SPD(MPH)...................10000 FOOT WIND SPEED MIX HGT(THOUSANDS OF FT AGL)........MIXING HEIGHT EXAMPLE: 6 = 6000 FEET; 12 = 12000 FEET; <1 = LESS THAN 1000 FEET T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION T WIND SPD(MPH).....................TRANSPORT WIND SPEED SMOKE DISP(CAT(KT-FT))...................SMOKE DISPERSION CATEGORY EXAMPLE: PR = POOR; FR = FAIR; GD = GOOD; VG = VERY GOOD; EX = EXCELLENT FOSBERG.............................FOSBERG FIRE WEATHER INDEX 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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