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

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680
FOUS54 KSJT 061020
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
420 AM CST FRI MAR 6 2015
TXZ170-062215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 420 AM CST FRI MAR 6 2015 DATE FRI 03/06/15 SAT 03/07/15 SUN 03/08/15 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 50 32 56 40 56 TEMP 23 32 42 49 45 37 34 35 34 41 50 55 52 45 42 42 42 46 52 55 53 DEWPT 18 18 17 19 22 23 24 24 25 27 27 28 30 32 33 36 38 41 45 46 48 MIN/MAX RH 28 73 32 89 68 RH 79 57 36 30 39 56 65 65 68 56 41 35 42 60 69 78 86 83 77 71 82 WIND DIR N E SE E E SE SE SE SE SE SE SE SE SE S S S S S SE SE WIND SPD 2 2 3 3 4 3 3 3 3 4 7 8 9 7 4 3 4 4 4 7 8 CLOUDS FW FW FW FW SC SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B2 OV B2 B2 B2 CLOUDS(%) 12 16 20 24 29 32 35 41 48 62 65 67 70 76 77 84 87 88 79 84 76 POP 12HR 0 5 10 20 40 QPF 12HR 0 0 0 0.06 0.08 RAIN SHWRS IS IS IS IS SC SC SC SC SC LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 4 4 4 4 4 4 4 4 3 2 2 2 2 2 2 2 2 2 2 2 3 MIX HGT <1 1 2 3 3 <1 <1 <1 <1 1 3 4 3 <1 <1 <1 <1 1 2 3 2 T WIND DIR E SE SE SE SE SE SE S S S SE S SE S S S S S S SE S T WIND SPD 5 6 6 6 6 5 5 5 4 5 8 5 13 5 8 5 8 4 24 4 10 SMOKE DISP PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR DATE MON 03/09/15 TUE 03/10/15 WED 03/11/15 THU 03/12/15 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 43 61 41 63 42 69 43 70 TEMP 45 45 56 56 44 43 57 58 45 45 62 63 47 46 63 64 DEWPT 45 45 47 44 42 40 45 43 42 40 45 42 43 41 46 44 MAX/MIN RH 100 59 100 51 96 40 96 41 RH 100 100 72 65 94 88 64 58 90 83 53 47 87 84 54 47 PWIND DIR E NE NE NE E NE SE S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC SC SC FW FW POP 12HR 40 30 10 10 10 5 5 5 RAIN SHWRS SC SC 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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