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

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FOUS54 KSJT 261100
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
600 AM CDT SUN APR 26 2015
TXZ170-262215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 600 AM CDT SUN APR 26 2015 DATE SUN 04/26/15 MON 04/27/15 TUE 04/28/15 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 88 58 84 54 67 TEMP 59 71 82 88 84 71 65 61 58 71 79 84 78 65 58 57 54 60 65 67 64 DEWPT 59 65 62 61 55 57 58 53 50 48 46 46 45 49 52 51 50 49 48 47 46 MIN/MAX RH 37 87 27 86 48 RH 84 76 52 39 39 65 84 85 76 45 31 27 31 55 78 81 86 66 53 48 53 WIND DIR SW S S S S SE SE W NW W W NW NW N N N N N N N N WIND SPD 4 8 10 10 10 3 1 3 4 4 7 8 7 8 10 10 10 11 12 14 12 CLOUDS B1 B1 SC SC SC SC B1 SC SC SC SC SC SC B1 B1 B2 B2 B2 B1 B1 SC CLOUDS(%) 66 66 45 45 45 49 52 44 36 35 34 39 44 54 64 73 82 73 64 55 45 POP 12HR 30 30 20 10 10 QPF 12HR 0.04 0.07 0.01 0 0 RAIN SHWRS SC SC SC SC SC SC IS IS IS IS TSTMS SC SC SC SC SC SC IS IS IS IS LAL 1 1 3 3 3 3 3 3 2 2 2 2 1 1 1 1 1 1 1 1 1 HAINES 6 4 4 5 5 5 6 6 6 5 6 6 6 5 3 3 3 3 2 3 3 MIX HGT <1 3 6 8 8 <1 <1 <1 <1 3 6 10 10 2 1 <1 <1 2 4 6 5 T WIND DIR S S S S S S SW W W NW W W NW N N N N N N N N T WIND SPD 8 19 25 25 24 8 5 6 6 13 18 13 10 28 24 24 23 21 21 19 19 SMOKE DISP PR FR VG EX EX PR PR PR PR PR VG VG GD FR PR PR PR FR GD VG GD DATE WED 04/29/15 THU 04/30/15 FRI 05/01/15 SAT 05/02/15 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 46 72 50 77 53 80 56 81 TEMP 49 46 68 68 53 50 72 73 56 53 75 76 59 56 77 77 DEWPT 45 42 43 43 44 44 46 45 49 49 49 49 52 53 52 54 MAX/MIN RH 89 35 80 33 86 34 89 38 RH 85 86 41 40 70 80 39 36 76 86 40 39 77 89 42 45 PWIND DIR N N NE S SE S SE S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC FW FW FW FW CL FW FW FW FW FW FW FW FW SC POP 12HR 5 5 5 5 5 5 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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