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

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815
FOUS54 KSJT 311943
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
243 PM CDT THU JUL 31 2014
TXZ170-011030- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 243 PM CDT THU JUL 31 2014 DATE 07/31/14 FRI 08/01/14 SAT 08/02/14 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 68 90 68 90 67 TEMP 87 86 80 74 71 68 78 87 90 88 81 75 72 68 78 87 90 88 80 74 71 67 DEWPT 65 63 64 65 65 65 63 61 60 58 60 63 64 65 65 62 59 57 58 58 60 62 MAX/MIN RH 89 35 90 34 84 RH 47 46 59 73 81 89 60 42 36 36 49 65 76 90 64 43 36 35 47 57 68 84 WIND DIR N N N N NE N N N N NE NE E E NE NE NE NE NE NE NE NE NE WIND SPD 8 8 8 5 3 3 5 7 7 7 5 7 3 3 7 8 10 10 8 4 3 3 CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B1 B1 SC B1 B1 B1 SC SC SC SC CLOUDS(%) 56 55 58 61 57 53 52 52 51 50 51 51 54 56 50 54 54 53 50 46 45 44 POP 12HR 20 10 10 5 5 QPF 12HR 0.03 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 3 3 3 4 3 4 4 3 4 4 4 4 3 3 4 3 5 MIX HGT 5 5 2 1 <1 <1 4 6 7 7 <1 <1 <1 <1 3 5 8 8 1 <1 <1 <1 T WIND DIR N NE NE NE NE E NE N N N NE E E NE NE NE NE NE NE NE NE N T WIND SPD 9 6 12 13 9 8 8 9 9 9 5 13 8 8 12 11 16 14 5 5 5 4 SMOKE DISP FR PR PR PR PR PR PR FR FR FR PR PR PR PR PR FR VG VG PR PR PR PR DATE 08/03 MON 08/04/14 TUE 08/05/14 WED 08/06/14 THU 08/07/14 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 93 70 94 69 95 71 95 72 97 TEMP 90 91 77 70 91 92 77 69 92 93 78 71 92 93 79 72 94 95 DEWPT 59 56 60 62 58 56 62 63 58 58 62 66 61 58 66 68 62 60 MIN/MAX RH 30 76 29 81 29 85 30 87 31 RH 36 31 56 76 33 30 60 81 33 31 58 85 36 31 64 87 36 32 PWIND DIR NE E E E SE S S S S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC POP 12HR 10 5 5 5 5 5 5 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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