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

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FOUS54 KSJT 012001
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
301 PM CDT FRI AUG 1 2014
TXZ170-021030- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 301 PM CDT FRI AUG 1 2014 DATE 08/01/14 SAT 08/02/14 SUN 08/03/14 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 68 91 66 92 68 TEMP 89 87 80 75 72 68 78 88 91 89 81 74 70 66 78 89 92 90 82 76 72 68 DEWPT 59 60 62 63 63 63 63 62 60 58 59 60 61 62 64 60 59 59 61 62 64 65 MAX/MIN RH 84 34 87 33 90 RH 37 40 53 66 73 84 59 41 35 35 48 62 73 87 62 38 33 35 48 63 76 90 WIND DIR N NE NE NE NE N N NE NE E E E NE NE NE NE NE E E E E NE WIND SPD 8 7 4 3 3 2 3 4 5 7 4 4 3 3 7 8 10 10 8 4 3 3 CLOUDS SC SC SC B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC CLOUDS(%) 48 47 49 51 54 57 54 50 46 41 39 39 37 35 35 35 34 33 33 33 34 34 POP 12HR 10 5 5 5 5 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 3 4 3 4 4 4 5 4 5 5 4 3 3 3 3 4 5 5 4 3 3 4 MIX HGT 6 7 <1 <1 <1 <1 3 6 7 8 4 <1 <1 <1 5 9 9 9 5 <1 <1 <1 T WIND DIR N NE E E E E NE NE NE NE E E NE NE NE NE NE E E E E NE T WIND SPD 9 6 5 11 4 4 6 10 13 10 5 4 4 4 13 18 18 14 6 5 3 4 SMOKE DISP FR FR PR PR PR PR PR FR GD GD PR PR PR PR FR VG VG VG PR PR PR PR DATE 08/04 TUE 08/05/14 WED 08/06/14 THU 08/07/14 FRI 08/08/14 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 94 70 95 71 97 72 97 73 95 TEMP 91 92 78 70 92 93 79 71 94 95 80 72 94 95 81 73 93 93 DEWPT 62 58 63 66 60 59 63 67 60 59 66 69 62 60 67 70 65 61 MIN/MAX RH 31 87 30 87 29 90 30 90 34 RH 38 32 61 87 35 32 59 87 32 30 62 90 35 31 64 90 41 35 PWIND DIR E SE SE SE S S S S S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC SC SC FW SC SC SC SC SC SC SC SC SC SC SC POP 12HR 5 5 5 5 5 5 5 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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