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

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970
FOUS54 KSJT 182027
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
327 PM CDT SAT OCT 18 2014
TXZ170-191115- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 327 PM CDT SAT OCT 18 2014 DATE 10/18/14 SUN 10/19/14 MON 10/20/14 TUE 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 60 79 57 79 57 TEMP 79 74 67 64 63 61 66 75 78 74 65 62 60 59 64 74 78 73 65 62 60 59 DEWPT 60 61 61 61 59 57 60 61 61 59 59 59 59 57 60 59 57 58 58 56 58 56 MAX/MIN RH 89 56 96 48 94 RH 53 64 80 88 88 85 81 62 57 61 82 90 96 94 84 59 48 59 78 81 93 91 WIND DIR E E NE E NE NE E SE SE E SE SE SE S SE SE E E SE E E E WIND SPD 5 5 4 4 4 3 5 9 8 7 5 4 2 2 3 4 5 5 4 3 2 1 CLOUDS SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 B1 B1 CLOUDS(%) 32 37 45 53 60 68 67 67 63 59 61 63 66 69 61 53 51 49 59 53 58 63 POP 12HR 5 10 10 10 10 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 4 4 3 4 4 4 3 4 3 3 3 3 3 4 4 4 4 4 3 3 3 3 MIX HGT 4 2 <1 <1 <1 <1 1 4 6 2 <1 <1 <1 <1 2 5 7 3 <1 <1 <1 <1 T WIND DIR E E E E E E E SE SE SE E SE SE S S SE SE SE SE SE SE SE T WIND SPD 10 9 4 5 6 4 9 11 6 12 4 11 8 2 4 9 11 8 8 6 5 5 SMOKE DISP FR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR GD PR PR PR PR PR DATE 10/21 WED 10/22/14 THU 10/23/14 FRI 10/24/14 SAT 10/25/14 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 81 55 81 56 80 53 79 51 78 TEMP 76 75 61 57 75 74 61 58 75 74 59 55 73 72 57 53 72 71 DEWPT 58 55 56 55 55 54 52 52 54 54 53 53 53 52 50 50 52 52 MIN/MAX RH 45 94 41 82 43 95 42 90 42 RH 54 50 85 94 50 49 72 82 50 51 83 95 50 50 78 90 50 51 PWIND DIR E SE E SE SE E NE E NE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC POP 12HR 10 10 10 10 10 20 20 10 10 RAIN SHWRS IS IS IS IS TSTMS IS IS 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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