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

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031
FOUS54 KSJT 202041
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
241 PM CST SAT DEC 20 2014
TXZ128-211015- HAMBY RAWS-CALLAHAN TX 32.50N 99.62W ELEV. 1900 FT 241 PM CST SAT DEC 20 2014 DATE 12/20/14 SUN 12/21/14 MON 12/22/14 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 CST 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MIN/MAX 41 62 44 72 40 TEMP 53 49 45 44 43 41 44 55 62 55 50 48 48 44 49 63 72 60 50 47 47 41 DEWPT 41 41 43 41 41 40 43 44 44 41 41 40 40 37 39 37 37 36 38 38 36 34 MAX/MIN RH 100 52 77 28 78 RH 63 76 95 91 92 98 95 66 53 58 72 73 75 75 68 38 28 41 63 70 67 78 WIND DIR S SE S S S S S SW SW S S S SW SW SW W W NW N N N N WIND SPD 8 7 8 10 9 9 10 14 14 8 10 12 12 10 10 10 10 5 5 10 14 14 CLOUDS B2 B2 B2 B2 B2 OV B2 B1 SC FW SC SC SC SC SC SC SC SC B1 B1 B1 B1 CLOUDS(%) 77 70 75 79 84 88 76 63 44 25 27 28 30 32 37 41 45 49 56 63 66 67 POP 12HR 5 0 5 5 30 QPF 12HR 0 0 0 0 0.01 RAIN SHWRS SC SC SC 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 2 3 2 2 3 4 5 5 5 5 5 4 3 4 5 5 4 4 3 2 2 MIX HGT 4 2 2 1 <1 <1 1 2 3 <1 <1 <1 <1 <1 1 2 3 <1 <1 <1 2 2 T WIND DIR S S S S S S SW SW SW S S SW SW SW SW SW SW W NE N N N T WIND SPD 6 10 13 13 13 11 18 18 19 9 12 14 16 14 18 16 17 4 2 20 33 33 SMOKE DISP PR PR PR PR PR PR PR PR FR PR PR PR PR PR PR PR FR PR PR PR FR GD DATE 12/23/14 WED 12/24/14 THU 12/25/14 FRI 12/26/14 SAT 12/27/14 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CST 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 MAX/MIN 53 32 58 41 67 41 56 32 52 TEMP 49 45 37 32 50 52 45 41 59 58 47 42 51 47 38 33 46 45 DEWPT 27 23 22 22 24 24 26 27 28 28 33 28 26 25 24 23 20 21 MIN/MAX RH 34 66 27 57 23 59 30 68 28 RH 42 41 54 65 36 33 47 57 31 33 58 58 37 42 58 68 35 39 PWIND DIR N NW W SW SW SW N N N WIND CHAR 15> <15 <15 <15 15> <15 <15 <15 <15 AVG CLOUDS B1 SC SC FW CL CL CL CL FW FW FW SC SC SC SC FW FW FW POP 12HR 10 0 5 5 0 0 5 5 5 $$ 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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