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

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FOUS54 KSJT 161030
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
430 AM CST MON JAN 16 2017
TXZ170-162200- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 430 AM CST MON JAN 16 2017 DATE MON 01/16/17 TUE 01/17/17 WED 01/18/17 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 70 45 53 44 57 TEMP 47 52 64 70 65 54 53 48 45 47 51 53 51 47 47 45 44 47 54 57 55 DEWPT 44 45 43 43 45 44 44 44 41 41 41 43 45 45 44 44 44 46 48 50 50 MIN/MAX RH 38 89 68 100 77 RH 89 77 46 38 48 69 71 86 86 79 68 69 80 93 89 96100 96 80 77 83 WIND DIR W W W W N N NE N N NE NE NE NE NE N N NE N N N NE WIND SPD 3 3 3 5 3 3 3 5 6 6 8 6 5 5 4 4 3 3 3 2 2 WIND GUST CLOUDS SC SC SC FW SC SC B1 B1 B2 B2 B2 B2 OV OV B2 B2 OV OV B2 B2 B1 CLOUDS(%) 38 31 28 23 34 49 54 58 81 78 87 83 90 90 86 84 90 88 84 78 63 POP 12HR 5 10 50 60 30 QPF 12HR 0 0 0.42 0.30 0.11 RAIN SHWRS C C C C L L L L C C C C TSTMS S S S S S S S S S S S S LAL 1 1 1 1 2 2 2 2 2 2 HAINES 4 5 5 4 5 5 3 3 2 2 MIX HGT 2000 2800 400 400 1600 2200 1300 400 1500 2100 T WIND DIR W NW NE NE NE NE NE N N W T WIND SPD 3 4 4 12 16 14 11 8 5 2 SMOKE DISP PR PR PR PR PR PR PR PR PR PR DATE THU 01/19/17 FRI 01/20/17 SAT 01/21/17 SUN 01/22/17 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 46 70 47 72 46 69 46 62 TEMP 49 46 64 66 54 47 65 67 54 46 63 65 53 46 58 58 DEWPT 49 46 50 45 44 42 45 43 41 41 43 40 37 37 32 34 MAX/MIN RH 100 42 86 35 86 36 71 33 RH 100 100 60 47 69 83 48 42 61 83 48 40 54 71 37 40 PWIND DIR S SW SW SW SW W W W WIND CHAR <15 <15 <15 <15 <15 <15 <15 15> AVG CLOUDS B1 B1 SC SC SC FW FW FW FW SC B1 B1 SC SC SC FW POP 12HR 10 10 5 5 10 10 20 10 $$ 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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