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

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509
FOUS54 KSJT 210805
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
305 AM CDT TUE OCT 21 2014
TXZ170-212245- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 305 AM CDT TUE OCT 21 2014 DATE TUE 10/21/14 WED 10/22/14 THU 10/23/14 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 MAX/MIN 80 55 80 57 81 TEMP 59 57 67 77 80 74 63 60 57 55 65 76 80 75 65 62 60 57 67 77 81 76 DEWPT 57 57 58 58 57 56 54 53 52 51 52 52 52 52 54 55 56 56 56 56 56 56 MIN/MAX RH 45 88 38 95 43 RH 93100 73 53 45 53 74 78 82 87 62 43 38 45 69 78 87 95 67 48 43 51 WIND DIR E E E E E E E SE E E E SE E E SE SE SE SE S S SE E WIND SPD 1 1 3 5 7 7 5 3 3 3 4 8 7 4 4 3 3 2 3 3 3 3 CLOUDS B1 B1 B1 B1 B1 B2 B1 B1 B1 B2 B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 SC SC CLOUDS(%) 60 67 62 58 65 72 66 61 66 70 64 57 58 60 65 71 74 76 66 55 49 43 POP 12HR 5 5 5 10 20 QPF 12HR 0 0 0 0 0.02 RAIN SHWRS IS IS IS IS TSTMS IS IS IS IS LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 1 HAINES 3 3 4 4 4 4 3 3 4 4 5 5 5 4 4 4 4 4 4 3 3 3 MIX HGT <1 <1 2 6 6 3 <1 <1 <1 <1 2 5 5 <1 <1 <1 <1 <1 2 6 7 <1 T WIND DIR S SE SE E E SE E SE SE SE SE SE SE E E SE SE S SW S SE E T WIND SPD 1 0 4 5 6 11 5 5 4 3 9 10 11 5 4 4 4 4 9 1 3 6 SMOKE DISP PR PR PR PR FR PR PR PR PR PR PR FR GD PR PR PR PR PR PR PR PR PR DATE FRI 10/24/14 SAT 10/25/14 SUN 10/26/14 MON 10/27/14 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MIN/MAX 57 84 55 83 56 84 57 83 TEMP 62 57 80 78 62 55 79 77 62 56 80 78 63 57 79 77 DEWPT 53 55 57 54 54 54 56 53 53 52 53 50 54 57 57 55 MAX/MIN RH 95 37 99 37 86 32 98 40 RH 74 93 45 44 77 95 45 44 73 86 40 38 73 98 48 47 PWIND DIR S SW S S S S S S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC FW FW FW FW FW FW FW FW FW FW FW FW SC FW POP 12HR 10 5 0 0 0 0 5 5 $$ 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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