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

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FOUS54 KSJT 212031
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
231 PM CST FRI NOV 21 2014
TXZ170-221015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 231 PM CST FRI NOV 21 2014 DATE 11/21/14 SAT 11/22/14 SUN 11/23/14 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 CST 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MIN/MAX 61 70 49 76 41 TEMP 73 69 65 63 62 61 64 68 69 62 55 52 50 50 60 74 74 62 50 45 42 41 DEWPT 61 61 60 61 61 61 61 62 60 57 55 50 48 41 40 40 39 37 34 31 31 30 MAX/MIN RH 99 75 100 28 66 RH 67 76 84 93 96 99 93 83 75 83100 94 93 71 48 30 29 39 55 59 65 64 WIND DIR S SE SE SE SE SE SE S S SW SW W W W W W W W NW NW NW NW WIND SPD 10 5 8 10 10 10 11 12 9 3 3 5 7 10 15 17 12 8 7 8 8 8 CLOUDS B2 B2 OV OV OV OV OV OV B2 B1 SC SC SC FW FW FW FW FW FW FW FW CL CLOUDS(%) 74 77 91 94 94 93 91 88 71 54 38 40 29 18 18 7 7 7 7 10 10 5 POP 12HR 70 80 30 0 5 QPF 12HR 0.16 0.64 0.11 0 0 RAIN SHWRS IS SC SC NM NM O O O O SC SC TSTMS IS SC SC NM NM O O O O SC SC LAL 2 3 3 4 4 5 5 5 5 3 3 1 1 1 1 1 1 1 1 1 1 1 HAINES 3 3 3 3 3 3 3 3 3 4 5 5 5 6 5 5 5 5 6 4 5 MIX HGT 6 1 1 1 <1 <1 <1 3 4 <1 <1 <1 <1 <1 <1 2 4 <1 <1 <1 <1 <1 T WIND DIR S SE SE SE S SE SE S S S SW SW SW W W W W W NW N W W T WIND SPD 20 11 17 25 16 16 20 33 21 8 10 4 6 12 12 21 26 8 16 6 5 5 SMOKE DISP VG PR PR PR PR PR PR VG GD PR PR PR PR PR PR PR VG PR PR PR PR PR DATE 11/24/14 TUE 11/25/14 WED 11/26/14 THU 11/27/14 FRI 11/28/14 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CST 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 MAX/MIN 61 36 56 36 63 38 65 38 62 TEMP 59 52 39 36 52 49 39 37 58 55 41 39 63 55 41 39 60 54 DEWPT 29 28 28 27 26 24 23 21 28 30 31 29 36 38 37 35 41 40 MIN/MAX RH 28 70 30 56 27 70 35 89 46 RH 32 40 65 69 36 37 53 53 32 39 67 67 36 53 85 86 49 60 PWIND DIR NW SW N W SW SW S S S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS CL CL CL FW FW FW FW CL CL CL CL CL CL CL CL CL FW FW POP 12HR 5 10 5 0 0 10 0 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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