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

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200
FOUS54 KSJT 220915
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
315 AM CST SUN JAN 22 2017
TXZ170-222245- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 315 AM CST SUN JAN 22 2017 DATE SUN 01/22/17 MON 01/23/17 TUE 01/24/17 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 66 37 75 50 78 TEMP 50 49 50 62 66 60 49 46 40 38 43 67 75 70 60 58 53 51 55 72 78 70 DEWPT 31 32 35 36 35 33 36 35 34 32 34 33 34 37 38 37 37 38 41 40 38 37 MIN/MAX RH 30 85 22 68 24 RH 48 52 56 38 32 36 61 65 79 79 70 28 22 30 44 45 54 61 59 31 24 30 WIND DIR W W NW NW NW NW NW W W W SW SW SW S S S S S SW W W NW WIND SPD 23 23 20 24 20 10 3 4 4 3 3 8 10 5 3 5 5 8 9 10 10 8 WIND GUST CLOUDS FW CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW FW SC CLOUDS(%) 9 3 3 1 1 1 0 0 1 2 0 2 0 2 1 8 16 22 10 13 13 28 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 HAINES 4 4 4 4 5 5 5 6 6 5 MIX HGT 4600 6000 300 200 2600 3500 300 300 3800 5600 T WIND DIR NW NW NW W SW SW S S SW NW T WIND SPD 47 28 3 0 8 12 5 10 16 13 SMOKE DISP EX EX PR PR PR FR PR PR VG GD DATE WED 01/25/17 THU 01/26/17 FRI 01/27/17 SAT 01/28/17 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 42 61 34 60 36 61 38 57 TEMP 53 44 57 55 42 35 54 55 43 37 56 56 45 39 53 52 DEWPT 29 29 25 25 28 27 27 30 31 31 36 36 35 32 29 28 MAX/MIN RH 58 25 75 30 89 39 79 33 RH 39 55 29 31 57 72 35 38 62 79 47 47 68 76 39 39 PWIND DIR NW NW N S S S NE N WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS FW FW FW FW FW FW CL FW FW FW SC SC B1 B1 SC SC POP 12HR 5 5 5 0 0 5 5 5 $$ 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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