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

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120
FOUS54 KSJT 301948
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
248 PM CDT MON MAY 30 2016
TXZ170-311015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 248 PM CDT MON MAY 30 2016 DATE 05/30/16 TUE 05/31/16 WED 06/01/16 THU 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 68 84 67 79 63 TEMP 86 84 76 72 69 68 75 81 84 82 74 71 68 67 73 77 79 77 70 67 64 63 DEWPT 68 67 68 68 68 68 69 68 68 68 68 66 68 67 68 68 67 67 68 66 64 63 MAX/MIN RH 100 59 100 67 100 RH 55 57 76 87 97100 82 65 59 63 82 85100100 84 74 67 71 93 96100100 WIND DIR S SE SE S S S S S S SE SE NE SE SE SE SE SE E SE E SE NE WIND SPD 9 8 6 4 3 5 8 9 10 10 5 6 4 4 5 5 4 4 3 0 1 2 CLOUDS B1 B1 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 OV B2 OV B2 B2 B2 OV OV OV CLOUDS(%) 69 66 74 81 85 88 84 80 79 77 71 80 83 94 87 89 81 85 86 90 88 94 POP 12HR 30 50 60 70 60 QPF 12HR 0.18 0.43 0.57 1.09 0.69 RAIN SHWRS S C C C C C C C C L L L L L L L L L L L L L TSTMS S C C C C C C C C L L L L L L L L L L L L L LAL 3 3 3 3 4 4 4 4 4 4 HAINES 4 4 4 4 3 3 3 4 3 3 MIX HGT 3000 1200 4900 6800 2700 800 3400 5800 4000 300 T WIND DIR SE S S S S S SE SE SE W T WIND SPD 6 11 13 16 10 11 8 6 4 4 SMOKE DISP PR PR GD GD PR PR PR PR PR PR DATE 06/02 FRI 06/03/16 SAT 06/04/16 SUN 06/05/16 MON 06/06/16 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 78 61 78 61 80 62 81 62 84 TEMP 75 76 65 61 75 76 65 61 76 78 66 62 77 79 66 62 80 81 DEWPT 66 65 64 61 63 63 61 61 64 63 62 60 63 62 61 60 61 61 MIN/MAX RH RH 74 69 97100 66 64 87100 66 61 87 94 61 56 84 93 53 51 PWIND DIR E N N N N N N NE NE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS OV OV OV B2 B2 B2 B2 B1 B2 B1 B1 B1 B1 B1 SC SC SC SC POP 12HR 70 50 50 30 30 20 30 10 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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