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

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704
FOUS54 KSJT 270916
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
416 AM CDT FRI MAR 27 2015
TXZ170-272330- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 416 AM CDT FRI MAR 27 2015 DATE FRI 03/27/15 SAT 03/28/15 SUN 03/29/15 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 80 48 83 53 84 TEMP 39 39 53 71 80 76 63 56 51 48 61 75 83 81 67 63 58 55 61 74 82 82 DEWPT 35 34 37 34 31 34 36 37 38 39 42 43 42 44 46 46 45 47 51 52 51 54 MIN/MAX RH 17 70 24 83 33 RH 85 82 53 26 17 22 37 49 61 70 50 32 24 27 47 53 62 74 69 46 34 38 WIND DIR W W W W SW SW S SW SW SW SW SW S S S S SW S S S S S WIND SPD 2 3 5 10 8 4 2 3 2 3 9 11 11 9 4 8 4 8 10 12 12 11 CLOUDS CL CL CL FW FW FW CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW CLOUDS(%) 1 1 5 9 8 6 5 4 4 4 4 3 3 2 2 2 5 8 8 12 12 9 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 1 HAINES 5 5 5 5 6 5 5 5 6 6 6 6 6 6 6 6 6 6 6 6 6 6 MIX HGT <1 <1 <1 5 7 6 <1 <1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 3 5 3 T WIND DIR W SW W W W W SW SW SW SW SW SW SW S S S SW SW SW SW SW S T WIND SPD 6 6 12 11 11 12 5 5 4 5 16 18 17 17 6 6 8 6 13 16 14 13 SMOKE DISP PR PR PR FR GD GD PR PR PR PR PR FR GD GD PR PR PR PR PR PR GD FR DATE MON 03/30/15 TUE 03/31/15 WED 04/01/15 THU 04/02/15 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 56 77 59 74 57 82 58 83 TEMP 66 58 71 76 65 60 69 73 63 58 74 80 66 59 75 82 DEWPT 57 56 59 58 59 58 59 58 58 56 59 54 57 55 54 52 MAX/MIN RH 99 51 97 59 100 40 90 35 RH 74 93 67 53 81 94 69 59 84 93 59 40 72 87 47 36 PWIND DIR S SE SE S S S S SW WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS FW SC SC B1 B1 B1 B1 B1 SC SC SC FW FW FW SC FW POP 12HR 5 5 20 40 20 10 5 5 RAIN SHWRS IS IS SC SC IS IS TSTMS IS IS SC SC 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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