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

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883
FOUS54 KSJT 170937
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
437 AM CDT WED AUG 17 2016
TXZ170-172315- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 437 AM CDT WED AUG 17 2016 DATE WED 08/17/16 THU 08/18/16 FRI 08/19/16 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 MAX/MIN 82 71 85 72 88 TEMP 71 70 75 80 81 80 76 74 73 71 77 83 85 83 77 75 73 72 79 86 88 86 DEWPT 71 70 71 71 70 72 72 71 71 71 71 70 69 70 72 71 71 71 71 70 68 69 MIN/MAX RH 69 100 59 96 52 RH 100100 89 74 69 77 87 90 93100 83 66 59 65 84 88 94 96 78 59 52 57 WIND DIR SE SE S S SE SE SE SE SE SE SE S SE SE SE SE S S S S S S WIND SPD 3 3 3 4 5 8 5 5 4 3 4 5 6 6 4 4 4 3 9 9 10 8 CLOUDS OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 OV OV B2 B2 B2 CLOUDS(%) 96 98 96 94 91 89 90 92 93 93 93 92 92 89 89 86 86 91 91 81 81 85 POP 12HR 70 50 40 30 20 QPF 12HR 0.62 0.31 0.13 0.08 0.07 RAIN SHWRS C L L L L C C C C C C C C C C C C S S S S S TSTMS S L L L L C C C C C C C C C C C C S S S S S LAL 4 4 3 3 3 3 3 3 2 2 HAINES 3 3 3 3 4 4 4 3 4 4 MIX HGT 4000 4000 1500 1100 4500 6100 3900 1600 5300 6300 T WIND DIR S SE SE SE S S SE S S S T WIND SPD 11 11 5 5 12 20 11 11 20 24 SMOKE DISP PR PR PR PR GD VG GD PR VG VG DATE SAT 08/20/16 SUN 08/21/16 MON 08/22/16 TUE 08/23/16 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MIN/MAX 73 89 72 88 70 88 70 90 TEMP 76 73 87 87 76 72 86 85 74 70 85 85 74 70 87 87 DEWPT 71 71 70 70 71 71 71 70 70 69 69 69 70 70 68 67 MAX/MIN RH RH 84 95 57 57 84 96 61 61 87 97 59 59 87100 54 53 PWIND DIR S S S SE E SE SE SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 POP 12HR 20 40 30 50 30 40 40 30 $$ 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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