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

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067
FOUS54 KSJT 301949
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
249 PM CDT SAT APR 30 2016
TXZ170-011015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 249 PM CDT SAT APR 30 2016 DATE 04/30/16 SUN 05/01/16 MON 05/02/16 TUE UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 CDT 3HRLY 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 MIN/MAX 56 75 54 69 49 TEMP 84 80 68 62 58 56 64 71 75 72 63 58 55 54 60 66 69 66 57 53 50 49 DEWPT 48 50 54 57 57 56 59 61 61 60 61 58 55 54 55 53 54 52 50 49 48 47 MAX/MIN RH 99 60 100 58 95 RH 29 35 61 84 95 99 83 69 61 66 95 99100 99 83 64 60 61 77 88 95 95 WIND DIR N E E E E NE NE E NE NE NE NE N N N N N N N N N N WIND SPD 3 3 4 5 5 5 8 10 10 9 10 12 12 12 11 13 12 11 9 8 6 6 CLOUDS FW CL FW FW SC B1 B1 B2 B2 B2 B2 OV OV OV OV B2 B2 B1 B1 SC SC SC CLOUDS(%) 8 4 15 25 47 69 69 70 73 76 81 88 92 90 91 86 79 66 58 47 46 47 POP 12HR 0 10 60 40 10 QPF 12HR 0 0 0.29 0.08 0 RAIN SHWRS L L L L C C S S TSTMS L L L L C C S S LAL 1 1 1 2 4 4 3 2 1 1 HAINES 6 5 3 3 3 3 3 3 4 4 MIX HGT 3600 700 3300 3700 2600 1100 3700 4400 3400 300 T WIND DIR E E E E NE N N NE N N T WIND SPD 6 11 16 13 16 20 20 19 12 8 SMOKE DISP PR PR FR FR PR PR GD GD FR PR DATE 05/03 WED 05/04/16 THU 05/05/16 FRI 05/06/16 SAT 05/07/16 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CDT 6HRLY 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MAX/MIN 73 49 81 53 85 57 85 60 81 TEMP 68 70 54 49 75 77 59 53 79 81 63 57 79 82 65 60 77 78 DEWPT 47 48 47 48 49 47 50 49 50 51 53 54 54 55 59 59 62 61 MIN/MAX RH RH 47 45 79 98 41 35 72 86 36 35 72 92 42 41 79 97 60 56 PWIND DIR NE SE NW S S SE S SE S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC FW FW CL CL FW FW FW FW FW FW FW FW SC SC SC B1 B1 POP 12HR 5 0 5 5 0 5 5 5 20 $$ 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 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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