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

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FOUS54 KSJT 042027
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
327 PM CDT SAT JUL 4 2015
TXZ170-051130- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 327 PM CDT SAT JUL 4 2015 DATE 07/04/15 SUN 07/05/15 MON 07/06/15 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 72 89 70 90 72 TEMP 91 87 80 76 74 72 80 86 89 85 78 74 72 70 80 87 90 86 80 76 74 72 DEWPT 66 68 70 70 70 70 69 66 66 67 69 71 70 69 68 65 66 66 67 70 70 69 MAX/MIN RH 92 47 96 44 91 RH 44 53 71 81 86 92 68 51 47 55 73 88 92 96 67 48 44 51 66 82 88 91 WIND DIR S S SE S S S S S S S SE S S S S S S S S S S S WIND SPD 10 11 9 9 5 8 10 14 14 14 10 10 10 10 15 16 17 16 11 12 11 10 CLOUDS B1 SC SC B1 B1 B2 B2 SC SC SC SC B2 B2 B1 B1 SC SC SC SC B1 B1 B1 CLOUDS(%) 54 41 47 53 66 72 72 48 48 46 46 70 70 62 62 39 39 34 34 63 63 66 POP 12HR 10 10 10 5 5 QPF 12HR 0 0 0 0 0 LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 3 3 3 3 4 4 4 3 3 3 3 4 4 5 4 4 4 4 4 4 4 MIX HGT 5 5 3 2 1 <1 2 4 4 5 4 2 1 <1 2 4 5 6 4 2 1 <1 T WIND DIR S S S S S S S S S S S S S S S S S S S S S S T WIND SPD 19 23 26 27 19 12 18 25 26 26 29 29 21 16 24 33 33 31 32 32 25 19 SMOKE DISP GD VG GD FR PR PR PR GD VG VG GD FR PR PR FR VG VG EX VG FR PR PR DATE 07/07 WED 07/08/15 THU 07/09/15 FRI 07/10/15 SAT 07/11/15 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 92 72 92 72 92 70 92 71 92 TEMP 89 88 76 72 89 88 76 72 89 87 74 70 88 87 75 71 88 88 DEWPT 66 65 69 69 64 63 68 68 60 60 67 68 63 61 66 67 63 61 MIN/MAX RH 43 90 39 88 34 93 37 87 37 RH 47 48 79 90 44 44 77 88 38 40 77 93 44 41 74 87 43 41 PWIND DIR S S S S S S S S S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 B1 B1 B2 B1 SC SC SC B1 SC FW FW SC FW FW FW SC FW POP 12HR 10 20 10 5 0 0 5 0 0 RAIN SHWRS IS IS TSTMS IS IS $$ 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 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... IS.............ISOLATED SC.............SCATTERED NM.............NUMEROUS O..............OCCASIONAL S..............SLIGHT CHANCE C..............CHANCE L..............LIKELY WD.............WIDESPREAD 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 HAINES(CAT).........................HAINES INDEX 10K WIND DIR(8 POINT COMPASS).......10000 FOOT WIND DIRECTION 10K WIND SPD(MPH)...................10000 FOOT WIND SPEED MIX HGT(THOUSANDS OF FT AGL)........MIXING HEIGHT EXAMPLE: 6 = 6000 FEET; 12 = 12000 FEET; <1 = LESS THAN 1000 FEET T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION T WIND SPD(MPH).....................TRANSPORT WIND SPEED SMOKE DISP(CAT(KT-FT))...................SMOKE DISPERSION CATEGORY EXAMPLE: PR = POOR; FR = FAIR; GD = GOOD; VG = VERY GOOD; EX = EXCELLENT FOSBERG.............................FOSBERG FIRE WEATHER INDEX 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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