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

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264
FOUS54 KSJT 290949
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
449 AM CDT WED APR 29 2015
TXZ170-292215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 449 AM CDT WED APR 29 2015 DATE WED 04/29/15 THU 04/30/15 FRI 05/01/15 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 73 46 81 51 82 TEMP 44 58 70 73 70 59 51 49 46 63 77 81 78 65 56 53 51 65 78 82 79 DEWPT 42 42 42 42 41 42 42 42 42 45 42 40 42 46 46 47 47 50 48 47 47 MIN/MAX RH 32 85 24 86 29 RH 92 56 36 33 35 54 71 78 85 53 29 24 28 51 68 79 86 57 35 29 32 WIND DIR NW NW N N N NE SE S SW SW SW SE E SE S SW S S S SE SE WIND SPD 5 7 8 8 5 3 1 2 3 4 2 2 3 3 3 2 3 7 5 5 7 CLOUDS FW FW FW FW CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CLOUDS(%) 10 11 12 8 3 2 0 2 3 3 2 2 1 1 1 1 1 1 1 1 5 POP 12HR 0 0 0 0 0 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 HAINES 3 5 4 4 4 4 4 4 5 5 4 4 4 4 4 4 4 4 4 4 4 MIX HGT <1 4 6 7 6 <1 <1 <1 <1 4 7 8 8 <1 <1 <1 <1 3 7 8 7 T WIND DIR NW N N N N SE SW W SW SW N W SW SE S SW SW SW SE S SE T WIND SPD 6 13 10 9 5 3 4 5 5 6 2 1 2 5 4 4 4 11 6 5 6 SMOKE DISP PR FR FR FR PR PR PR PR PR PR PR PR PR PR PR PR PR PR FR PR FR DATE SAT 05/02/15 SUN 05/03/15 MON 05/04/15 TUE 05/05/15 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 54 82 59 81 63 83 66 82 TEMP 59 54 79 80 63 59 78 79 66 63 81 81 69 66 80 80 DEWPT 49 50 49 49 52 55 58 58 60 61 61 60 62 63 63 62 MAX/MIN RH 86 32 87 45 93 46 90 51 RH 70 86 35 34 67 87 50 48 81 93 51 49 78 90 56 54 PWIND DIR S S S S S S S SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS CL CL FW FW FW SC FW SC SC B1 B2 B1 B1 B1 B1 B2 POP 12HR 0 0 5 5 10 20 20 40 RAIN SHWRS IS IS IS IS SC SC TSTMS IS IS IS IS SC SC $$ 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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