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

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825
FOUS54 KSJT 281000
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
500 AM CDT THU AUG 28 2014
TXZ170-282215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 500 AM CDT THU AUG 28 2014 DATE THU 08/28/14 FRI 08/29/14 SAT 08/30/14 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 95 72 94 72 92 TEMP 73 81 90 94 91 83 78 76 73 81 89 93 91 82 78 76 73 80 88 91 89 DEWPT 67 66 64 64 64 66 68 68 69 70 67 65 64 66 68 68 69 67 65 64 63 MIN/MAX RH 37 87 40 87 40 RH 82 61 42 37 41 57 71 76 87 69 48 41 42 58 71 78 87 65 47 41 42 WIND DIR SE SE SE SE SE SE S SE SE SE SE SE SE SE SE S S SE SE SE SE WIND SPD 2 4 5 8 8 8 8 5 3 4 4 7 8 8 7 4 4 4 5 9 10 CLOUDS SC SC SC SC SC B1 B1 B1 B1 B1 SC B1 B1 SC SC SC B1 SC SC SC SC CLOUDS(%) 27 32 36 43 50 54 62 61 60 59 49 52 55 50 44 49 53 50 46 42 37 POP 12HR 10 20 30 20 20 QPF 12HR 0 0.02 0.04 0.06 0.02 RAIN SHWRS IS IS IS IS IS IS SC SC SC SC IS IS IS IS IS IS IS IS TSTMS IS IS IS IS IS IS SC SC SC SC IS IS IS IS IS IS IS IS LAL 1 1 2 2 2 2 2 2 3 3 3 3 2 2 2 2 2 2 2 2 1 HAINES 4 4 4 5 5 4 3 5 5 4 3 4 4 3 3 3 3 3 3 4 MIX HGT <1 3 7 7 7 4 2 1 <1 3 6 6 7 5 2 2 1 4 6 6 6 T WIND DIR S S E SE SE SE S S SE S SE SE SE S S S S S SE SE SE T WIND SPD 3 9 4 6 9 19 19 13 14 13 12 12 18 17 14 11 4 6 6 10 19 SMOKE DISP PR PR PR FR FR GD PR PR PR FR GD GD VG GD PR PR PR PR PR FR VG DATE SUN 08/31/14 MON 09/01/14 TUE 09/02/14 WED 09/03/14 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 70 94 70 96 73 94 69 94 TEMP 76 71 89 90 76 72 91 92 79 75 90 91 76 71 89 90 DEWPT 69 70 65 64 69 70 66 63 68 70 66 64 69 69 67 66 MAX/MIN RH 96 39 93 37 85 40 93 41 RH 79 96 45 42 79 93 44 39 69 85 45 41 78 93 48 45 PWIND DIR S S S S S S SE SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC FW SC SC SC SC POP 12HR 10 10 10 10 10 10 10 10 $$ 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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