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

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FOUS54 KSJT 180921
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
421 AM CDT MON MAY 18 2015
TXZ128-182215- HAMBY RAWS-CALLAHAN TX 32.50N 99.62W ELEV. 1900 FT 421 AM CDT MON MAY 18 2015 DATE MON 05/18/15 TUE 05/19/15 WED 05/20/15 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 88 67 79 67 80 TEMP 66 72 83 88 86 75 71 69 67 70 76 79 78 71 69 68 67 71 77 80 78 DEWPT 65 67 66 66 66 67 68 67 67 66 67 67 67 68 67 67 66 66 66 63 64 MIN/MAX RH 48 100 67 97 56 RH 97 83 57 48 51 76 90 93100 86 74 67 69 89 93 97 97 84 69 56 61 WIND DIR S S S SE SE SE SE SE SE SE SE SE SE SE S S S S S NE SE WIND SPD 5 7 8 10 10 10 8 8 10 10 11 11 11 11 10 9 9 8 5 7 7 CLOUDS B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 CLOUDS(%) 72 69 51 56 60 69 78 83 86 87 87 77 68 67 65 69 73 73 73 73 76 POP 12HR 20 50 60 30 40 QPF 12HR 0.02 0.31 0.50 0.07 0.06 RAIN SHWRS IS IS IS IS SC SC SC SC NM NM NM NM SC SC SC SC SC SC SC SC SC TSTMS IS IS IS IS SC SC SC SC NM NM NM NM SC SC SC SC SC SC SC SC SC LAL 2 2 2 2 3 3 3 3 4 4 4 4 3 3 3 3 3 3 3 3 3 HAINES 5 5 5 4 4 3 3 4 5 3 3 3 3 3 3 3 3 3 3 3 3 MIX HGT 1 3 4 7 6 3 2 2 2 3 5 6 4 1 1 <1 <1 1 2 2 2 T WIND DIR S S S SE SE SE S S S S S S S S S S SW SW N N NE T WIND SPD 13 14 11 14 19 27 21 23 19 20 18 19 26 23 25 16 13 14 17 13 16 SMOKE DISP PR PR FR GD GD GD FR PR PR FR GD GD GD PR PR PR PR PR PR PR PR DATE THU 05/21/15 FRI 05/22/15 SAT 05/23/15 SUN 05/24/15 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 62 72 61 78 67 81 66 82 TEMP 65 62 70 71 63 61 74 77 69 67 78 80 69 66 78 81 DEWPT 63 59 57 59 60 61 64 65 65 65 67 65 66 65 67 65 MAX/MIN RH 92 61 100 64 93 58 97 58 RH 92 90 63 66 90100 71 67 88 93 69 60 90 97 68 59 PWIND DIR SE NE E SE SE S S S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 POP 12HR 40 40 50 40 40 50 50 40 RAIN SHWRS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC TSTMS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC $$ 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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