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

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460
FOUS54 KSJT 292023
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
323 PM CDT WED JUL 29 2015<br>

TXZ128-301015-
HAMBY RAWS-CALLAHAN TX
32.50N  99.62W ELEV. 1900 FT
323 PM CDT WED JUL 29 2015

DATE           07/29/15      THU 07/30/15            FRI 07/31/15            SAT
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                      77          97          75          96          74
TEMP          98 95 86 83 80 77 85 93 96 94 84 81 78 75 83 91 95 93 83 80 77 74
DEWPT         63 61 63 63 64 65 68 65 61 61 63 63 63 63 65 62 60 64 65 67 66 65
MAX/MIN RH                   67          31          66          32          74
RH            32 33 47 52 58 67 57 40 32 34 49 54 60 66 55 38 32 39 55 65 69 74
WIND DIR      SE SE SE  S  S  S SW SE SE SE SE SE  S SW  W  E  E  E  E SE SE SE
WIND SPD       9 10  6  6  5  4  8  3  6  8  5  5  4  4  6  4  6  8  6  4  3  3
CLOUDS        SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1
CLOUDS(%)     30 29 30 27 27 27 31 36 34 33 32 31 34 36 36 44 44 50 50 49 49 53
POP 12HR                      5           5           5          20          20
QPF 12HR                      0           0           0        0.11        0.06
RAIN SHWRS     S                                      S  S  S  S  S  S  S  S  C
TSTMS          S                                      S  S  S  S  S  S  S  S  C
LAL                     1     1     1     1     1     1     3     3     2     2
HAINES                  5     5     5     5     5     5     5     6     6     5
MIX HGT              4700   400  8000  9800  5900   300  8300 10300  4900   900
T WIND DIR             SE     S     S    SE    SE    SW    NW    NE     E    SE
T WIND SPD              9     6     8     8     5     6     6     5    11     6


DATE           08/01 SUN 08/02/15 MON 08/03/15 TUE 08/04/15 WED 08/05/15
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            93      74      95      76      95      75      96      75      96
TEMP          89 91 79 74 90 93 81 76 91 92 80 75 91 93 80 75 92 94
DEWPT         63 63 60 61 62 61 62 63 63 61 60 64 63 57 60 61 60 55
MIN/MAX RH
RH            42 40 52 64 39 35 53 64 40 35 51 69 39 31 51 62 35 27
PWIND DIR           E      SE       S       S       S       S       S       S       S
WIND CHAR         <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 SC B1 B1 SC SC B1 SC SC SC SC SC SC SC SC SC SC SC
POP 12HR           30      10      10       5       5       5       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 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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