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

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563
FOUS54 KSJT 291957
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
257 PM CDT FRI AUG 29 2014
TXZ170-301015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 257 PM CDT FRI AUG 29 2014 DATE 08/29/14 SAT 08/30/14 SUN 08/31/14 MON 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 97 72 95 74 TEMP 93 91 81 77 74 71 83 94 97 94 83 79 75 72 83 92 95 93 83 80 76 74 DEWPT 67 64 66 68 69 70 68 67 65 63 65 66 68 68 68 66 64 66 67 69 69 70 MAX/MIN RH 97 34 86 36 87 RH 42 41 60 74 86 97 61 41 35 36 55 64 79 86 61 43 36 41 59 70 78 87 WIND DIR SE SE SE SE S S SE E E SE SE S S S S S S S S S S S WIND SPD 9 9 8 5 3 1 2 3 5 8 7 5 4 3 9 10 11 10 10 10 9 8 CLOUDS B1 B1 B1 B1 B1 B1 SC FW FW FW SC SC SC SC SC SC SC SC SC B1 SC SC CLOUDS(%) 61 59 57 54 53 51 37 23 23 22 28 33 36 38 36 35 37 40 48 56 44 32 POP 12HR 20 10 5 10 5 QPF 12HR 0.05 0 0 0 0 RAIN SHWRS IS IS IS IS IS TSTMS IS IS IS IS IS LAL 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 4 5 3 3 4 4 4 3 4 4 4 4 4 3 3 3 4 MIX HGT 8 7 <1 <1 <1 <1 4 7 10 6 1 <1 <1 <1 4 7 10 6 1 <1 <1 <1 T WIND DIR SE E SE S S S S E E SE SE S S S S SE S S S S S S T WIND SPD 10 9 14 19 9 9 6 3 5 13 6 18 16 10 10 8 10 16 27 24 14 12 SMOKE DISP GD FR PR PR PR PR PR PR FR GD PR PR PR PR PR FR GD GD PR PR PR PR DATE 09/01 TUE 09/02/14 WED 09/03/14 THU 09/04/14 FRI 09/05/14 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 96 73 94 73 96 72 95 70 93 TEMP 94 94 80 73 92 92 79 73 93 94 79 72 93 93 77 70 90 90 DEWPT 65 62 68 70 67 64 68 70 65 64 67 69 65 62 65 68 63 60 MIN/MAX RH 34 90 39 90 35 90 35 92 35 RH 40 35 68 90 44 40 70 90 40 38 66 90 41 37 67 92 41 37 PWIND DIR S S S S SE SE SE SE SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC FW SC SC SC FW SC SC SC SC SC SC SC SC SC FW FW SC POP 12HR 5 5 5 5 5 10 5 5 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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