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

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822
FOUS54 KSJT 260927
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
427 AM CDT FRI JUN 26 2015
TXZ170-262215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 427 AM CDT FRI JUN 26 2015 DATE FRI 06/26/15 SAT 06/27/15 SUN 06/28/15 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 93 72 91 68 91 TEMP 71 82 90 92 90 80 75 74 72 81 88 91 88 77 72 70 68 79 88 91 88 DEWPT 68 70 67 67 66 67 69 71 70 70 68 68 67 68 67 67 66 66 65 66 64 MIN/MAX RH 43 93 47 93 42 RH 89 67 47 44 45 65 82 90 93 68 51 48 49 74 84 90 93 64 47 44 45 WIND DIR S S S S S S S S SW W N NE NE E E NE NE E E SE SE WIND SPD 3 8 8 9 10 4 3 3 3 3 4 7 5 3 3 2 3 3 3 5 4 CLOUDS B1 SC SC SC FW FW SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC CLOUDS(%) 53 47 32 29 17 24 31 42 53 60 66 62 57 52 47 40 33 34 36 36 43 POP 12HR 5 10 40 40 20 QPF 12HR 0 0 0.18 0.15 0.03 RAIN SHWRS SC SC SC SC SC SC SC SC IS IS IS IS TSTMS SC SC SC SC SC SC SC SC IS IS IS IS LAL 1 1 1 1 1 1 1 1 3 3 3 3 3 3 3 3 2 2 2 2 1 HAINES 3 3 3 3 3 4 4 5 5 5 4 4 3 5 5 4 3 3 4 4 4 MIX HGT <1 2 5 8 6 <1 <1 <1 <1 2 6 7 6 <1 <1 <1 <1 2 7 8 7 T WIND DIR S S S S S S S S S W N NE E E NE E NE S E SE S T WIND SPD 6 13 12 11 14 12 5 9 8 5 6 4 8 5 3 3 2 3 2 3 6 SMOKE DISP PR PR GD GD GD PR PR PR PR PR PR PR FR PR PR PR PR PR PR PR FR DATE MON 06/29/15 TUE 06/30/15 WED 07/01/15 THU 07/02/15 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 69 93 71 91 71 90 69 91 TEMP 73 69 89 90 75 71 88 89 74 71 87 87 72 69 88 88 DEWPT 66 67 65 64 69 68 65 64 68 68 66 66 68 68 65 64 MAX/MIN RH 93 39 90 41 90 45 98 41 RH 79 93 45 43 82 90 46 44 82 90 49 49 86 98 47 45 PWIND DIR S S S S S S S S WIND CHAR <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 POP 12HR 5 10 10 20 10 10 5 10 RAIN SHWRS IS IS TSTMS 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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