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

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487
FOUS54 KSJT 190928
PFWSJT

Fire Weather Point Forecast Matrices
National Weather Service San Angelo TX
328 AM CST Sun Feb 19 2017
TXZ170-192215- Mason RAWS-Mason TX 30.74N 99.19W Elev. 1463 ft 328 AM CST Sun Feb 19 2017 Date Sun 02/19/17 Mon 02/20/17 Tue 02/21/17 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 75 54 74 45 75 Temp 55 60 70 75 72 62 59 56 54 59 69 74 70 57 52 47 45 53 67 75 71 Dewpt 55 59 59 59 59 57 56 54 52 50 48 46 44 44 43 43 42 42 42 42 42 Min/Max Rh 58 93 37 89 31 Rh 100 96 68 58 64 84 90 93 93 72 47 37 39 62 71 86 89 66 40 31 35 Wind Dir SE SE S S S SE SW SW NW NW NW NW N SE W W NW N N N N Wind Spd 6 5 9 6 4 3 3 2 3 2 4 4 3 3 2 3 3 3 6 4 3 Wind Gust Clouds B2 B2 B2 OV OV OV OV OV OV B2 B1 SC FW FW FW FW CL CL CL CL CL Clouds(%) 82 84 86 88 89 91 92 94 95 79 60 40 24 19 13 7 3 3 3 2 2 Pop 12hr 40 60 30 5 0 Qpf 12hr 0.08 0.28 0.01 0 0 RAIN SHWRS C C C C L L L L C C TSTMS C C C L L L L Obvis PF LAL 2 3 4 4 1 1 1 1 1 1 Haines 5 5 5 3 3 4 6 6 5 5 Mix Hgt 2700 4200 3100 700 4400 6200 2600 500 4400 6300 T Wind Dir SE S S SW W W W W NW N T Wind Spd 14 12 12 6 4 9 4 5 9 11 Smoke Disp FR FR FR PR PR FR PR PR FR GD Date Wed 02/22/17 Thu 02/23/17 Fri 02/24/17 Sat 02/25/17 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 44 80 48 81 49 71 41 67 Temp 51 44 71 75 55 48 73 76 56 49 65 67 48 41 60 64 Dewpt 41 40 41 41 41 40 42 43 40 36 33 29 31 32 34 36 Max/Min Rh 86 25 74 26 61 22 70 30 Rh 68 86 34 29 59 74 33 31 55 61 30 24 51 70 37 35 Pwind Dir NW SW S SW SW NW NE SE Wind Char <15 <15 <15 <15 <15 <15 <15 <15 Avg Clouds CL CL FW CL CL CL CL CL CL CL CL CL CL FW FW FW Pop 12hr 0 0 0 0 0 0 0 0 $$ 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 DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES Relative to Due North. Example: 09 = 90 Degrees = East; 18 = 180 Degrees = South; 27 = 270 Degrees = West; 36 = 360 Degrees = North 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... S..............Slight Chance C..............Chance L..............Likely O..............Occasional 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 Mix Hgt(Ft Agl).....................Mixing Height T Wind Dir(8 Point Compass).........Transport Wind Direction T Wind Spd(mph).....................Transport Wind Speed ADI (Index).........................Atmospheric Dispersion Index Dispersion..........................LDSI Max LVORI...........................LVORI Sta Pres (Inches Mercury)...........Station Pressure ADI (Index).........................Atmospheric Dispersion Index Ceiling (Ft)........................Ceiling Stability (Cat).....................Pasquill Turner Stability 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 mpn; 15> = 15 mph or Greater Ave Clouds(Cat).....................Average Cloud Cover Category Pop 12hr(%).........................Probability for Accumulation Precipitation Weather... See Day 1 Through 3 Weather Descriptions

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