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

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133
FOUS54 KSJT 182038
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
338 PM CDT THU SEP 18 2014
TXZ170-191015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 338 PM CDT THU SEP 18 2014 DATE 09/18/14 FRI 09/19/14 SAT 09/20/14 SUN UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 CDT 3HRLY 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 MIN/MAX 71 87 71 87 71 TEMP 86 82 76 74 72 71 77 85 86 82 76 74 72 71 78 85 87 82 76 74 72 71 DEWPT 68 68 69 71 70 70 71 70 69 70 70 70 70 70 69 67 68 68 68 68 69 69 MAX/MIN RH 98 55 96 52 93 RH 55 63 78 91 93 98 80 62 57 68 81 87 92 96 75 55 54 64 76 83 90 93 WIND DIR E E E SE SE E SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE WIND SPD 7 4 3 3 2 3 5 7 7 5 7 8 5 4 7 8 9 8 7 5 4 3 CLOUDS B2 OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 B2 B2 B2 B1 B1 B2 B2 B2 B2 CLOUDS(%) 80 94 94 94 94 92 87 83 77 70 65 61 69 77 76 75 69 62 71 80 79 78 POP 12HR 50 30 30 30 30 QPF 12HR 0.22 0.30 0.01 0.13 0.04 RAIN SHWRS NM SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC TSTMS NM SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC LAL 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 HAINES 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 2 2 2 2 2 MIX HGT 5 3 <1 <1 <1 <1 1 3 5 2 <1 <1 <1 <1 2 4 5 3 <1 <1 <1 <1 T WIND DIR E E E SE SE E E SE SE SE S S S S S S SE SE SE SE SE SE T WIND SPD 8 17 16 9 9 6 10 12 11 13 16 14 13 12 14 13 13 16 11 12 13 12 SMOKE DISP PR FR PR PR PR PR PR PR FR PR PR PR PR PR PR FR FR PR PR PR PR PR DATE 09/21 MON 09/22/14 TUE 09/23/14 WED 09/24/14 THU 09/25/14 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CDT 6HRLY 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MAX/MIN 89 69 88 65 84 63 85 63 84 TEMP 87 82 72 69 86 80 69 65 82 77 67 63 82 77 67 63 81 78 DEWPT 68 67 66 66 64 62 64 64 63 62 62 62 62 63 61 63 62 61 MIN/MAX RH 50 92 43 96 48 97 47 100 47 RH 54 61 80 92 49 54 84 96 53 61 86 97 51 62 82100 53 57 PWIND DIR SE NE NE NE E E E E SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC POP 12HR 30 30 20 10 10 10 10 10 10 RAIN SHWRS SC SC SC SC IS IS TSTMS SC SC SC SC IS IS $$ 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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