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

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047
FOUS54 KSJT 211056
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
456 AM CST SAT FEB 21 2015
TXZ170-212215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 456 AM CST SAT FEB 21 2015 DATE SAT 02/21/15 SUN 02/22/15 MON 02/23/15 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 CST 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 MAX/MIN 73 40 50 30 35 TEMP 57 61 69 73 71 57 50 46 40 43 48 50 48 41 37 33 30 31 34 35 34 DEWPT 56 55 48 46 44 44 43 42 40 43 43 41 39 34 31 28 27 25 25 25 25 MIN/MAX RH 36 100 68 89 66 RH 97 82 47 38 38 63 78 87100100 83 71 70 76 79 82 89 77 69 66 68 WIND DIR SW W N N N NE E E E NE NE NE NE N NE N NE N N N NE WIND SPD 11 8 9 8 5 5 5 3 5 7 9 10 14 15 14 12 12 12 10 10 9 CLOUDS B2 B2 B1 FW FW FW FW B1 B1 B1 OV OV OV OV OV OV OV OV B2 B2 B2 CLOUDS(%) 72 78 52 18 8 8 25 53 58 58 90 90 94 94 95 95 90 90 85 85 77 POP 12HR 10 10 50 60 60 QPF 12HR 0 0 0.06 0.14 0.13 FRZG RAIN C C L L C C S RAIN C C C C C C SLEET C C L L C C S LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 6 6 6 5 4 4 4 6 6 5 5 3 3 2 2 2 2 2 2 2 2 MIX HGT <1 2 2 3 3 <1 <1 <1 <1 <1 1 2 2 2 2 2 2 2 2 2 2 T WIND DIR SW W NW N N NE E E E E E NE NE NE N N NE N N N N T WIND SPD 20 18 11 8 3 5 5 4 11 9 11 16 20 24 21 21 21 20 20 18 17 SMOKE DISP PR PR PR PR PR PR PR PR PR PR PR PR PR FR PR PR PR PR FR PR PR DATE TUE 02/24/15 WED 02/25/15 THU 02/26/15 FRI 02/27/15 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CST 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 MIN/MAX 28 51 35 57 34 53 33 41 TEMP 31 28 46 50 41 35 52 55 42 34 49 51 40 33 39 40 DEWPT 24 26 33 37 36 34 37 34 33 32 34 31 32 29 26 28 MAX/MIN RH 97 55 96 42 92 43 85 58 RH 76 93 61 62 83 96 56 44 69 92 57 45 73 85 60 62 PWIND DIR NE SE S NW NE E NE NE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B2 B1 B1 SC B1 SC SC SC SC SC SC SC B1 B1 B2 POP 12HR 20 10 10 5 5 10 20 40 FRZG RAIN S S RAIN S S C C SLEET S S $$ 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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