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

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974
FOUS54 KSJT 291025
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
525 AM CDT FRI MAY 29 2015
TXZ170-292215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 525 AM CDT FRI MAY 29 2015 DATE FRI 05/29/15 SAT 05/30/15 SUN 05/31/15 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 85 68 83 63 80 TEMP 66 74 81 85 82 73 69 69 68 73 80 83 80 69 64 64 63 69 77 80 77 DEWPT 66 68 68 68 68 70 69 68 67 67 67 66 66 67 64 64 63 65 64 63 62 MIN/MAX RH 57 100 58 100 56 RH 100 83 64 58 63 89100 97 97 81 64 58 63 92100100100 88 64 56 60 WIND DIR S S S S SE SE S SE SE SE N NE NE NE NE N N N NE NE NE WIND SPD 8 10 10 10 10 8 9 5 4 3 2 3 3 3 2 2 3 5 5 5 4 CLOUDS B2 B1 B1 B1 SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 SC SC CLOUDS(%) 76 67 58 52 47 59 71 77 83 84 84 80 76 75 73 69 64 60 55 47 39 POP 12HR 30 50 60 50 30 QPF 12HR 0.03 0.13 0.54 0.14 0.03 RAIN SHWRS SC SC IS IS SC SC SC SC NM NM NM NM SC SC SC SC SC SC SC SC TSTMS SC SC IS IS SC SC SC SC NM NM NM NM SC SC SC SC SC SC SC SC LAL 3 3 2 2 3 3 3 3 4 4 4 4 3 3 3 3 3 3 3 3 1 HAINES 3 3 4 3 4 4 2 4 3 3 4 3 4 3 2 3 2 3 4 3 4 MIX HGT 1 2 5 6 5 1 1 1 1 2 5 4 3 <1 <1 <1 <1 3 7 8 6 T WIND DIR S S S S SE SE S S S E N W N E SW W NW N N N N T WIND SPD 10 20 21 18 17 12 11 11 5 5 5 4 4 1 1 3 4 9 9 9 8 SMOKE DISP PR FR GD VG GD PR PR PR PR PR PR PR PR PR PR PR PR PR FR GD FR FLASH FLOOD A A A A A DATE MON 06/01/15 TUE 06/02/15 WED 06/03/15 THU 06/04/15 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 61 83 64 85 67 86 68 86 TEMP 62 61 79 80 65 64 81 82 68 67 83 83 69 68 83 83 DEWPT 62 60 63 61 63 62 65 63 65 64 65 64 66 66 66 66 MAX/MIN RH 100 49 93 50 91 48 94 51 RH 100 97 57 52 92 93 57 53 90 91 55 53 91 94 57 57 PWIND DIR E SE SE S S S SE SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC FW SC SC SC FW SC SC SC SC SC SC SC POP 12HR 10 10 5 5 5 5 5 10 $$ 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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