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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
419 AM EDT Wed Aug 4 2021

VAZ012-042100-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
419 AM EDT Wed Aug 4 2021

Date             Wed 08/04/21            Thu 08/05/21            Fri 08/06/21
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 76          55          80          57          82
TEMP          57 58 68 74 76 68 62 59 57 60 72 78 78 72 64 60 58 61 75 80 80 73
DEWPT         55 57 58 56 56 57 56 54 54 56 59 58 58 59 58 56 55 57 61 60 59 60
MAX/MIN RH                   50          93          49          90          49
RH            93 96 70 53 50 68 81 83 90 87 64 50 50 64 81 87 90 87 62 51 49 64
WIND DIR       E  E  E  E  E  E  E SE SE SE SE SE  S SE  S  S  S  S  S  S  S  S
WIND SPD       2  3  5  5  5  3  2  2  0  1  2  2  2  1  2  1  2  1  3  4  3  2
CLOUDS        B1 B1 B1 SC SC SC SC FW SC FW FW FW FW FW FW FW FW FW FW SC SC B1
CLOUDS(%)     53 63 55 36 40 40 35 25 44 21 15 15 17 18  8  7 11 16 19 33 43 59
VSBY           7  7  8 10 10 10 10  8  8  9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     20          10          20          10          20
RAIN SHWRS                IS                   IS IS                   IS IS   
TSTMS                     IS                   IS IS                   IS IS   
LAL            1  1  1  1  2  1  1  1  1  1  1  2  2  1  1  1  1  1  1  2  2   
HAINES         4  5  5  3  5  5  3  3  3  3  4  4  5  4  5  4  4  4  4  5  4  3
MIX HGT       <1  1  2  4  5 <1 <1 <1 <1 <1  3  6  6 <1 <1 <1 <1 <1  3  5  5  3
T WIND DIR     E NE NE NE  E  E  E SE SE  S  S SE  S SE  S  S SW  S  S  S  S  S
T WIND SPD     3 11 12 10  8  5  4  4  2  5  3  2  3  5  3  2  2  3  9 10 11 18
DISPERSION    VP             VP VP VP VP             VP VP VP VP             VP
ADI            2 13 20 34 33  2  3  3  2  5 14 14 26  2  4  4  3  5 34 43 68  8
MAX LVORI      8  5  3  1  1  3  5  5  7  5  2  2  2  3  5  6  6  5  1  1  1  3
STABILITY      F  C  D  C  C  G  G  G  F  B  B  B  B  G  G  G  G  B  B  C  B  F
CEILING              None  None  None  None  None  None  None  None  None  None
STA PRES            27.30 27.28 27.32 27.34 27.38 27.34 27.37 27.39 27.40 27.36


Date          Sat 08/07/21 Sun 08/08/21 Mon 08/09/21 Tue 08/10/21
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       60      82      59      84      61      87      63      87
TEMP          64 63 79 72 62 64 82 75 65 65 84 77 66 67 83 76
DEWPT         58 59 63 63 59 60 63 62 59 61 63 63 61 62 66 65
RH            81 87 58 73 90 87 53 64 81 87 49 62 84 84 57 69
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 SC SC SC FW FW FW FW FW FW FW FW FW SC SC
POP 12HR           10      40       5      20       5      20      10      40
RAIN SHWRS          IS SC          IS          IS       IS SC
TSTMS                  SC          IS          IS          SC

$$


This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.

Below is a weather element key for this product.
(Note...winds do not reflect local terrain effects.)

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 humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
     EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
   TYPE...
       RAIN...........Rain
       RAIN SHWRS.....Rain showers
       TSTMS..........Thunderstorms
       DRIZZLE........Drizzle
       SNOW...........Snow
       SNOWSHWRS......Snow showers
       SLEET..........Sleet
       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
LAL(CATEGORY).......................Lightning Activity Level
HAINES(CATEGORY)....................Haines Index
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
     Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
     Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure

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).......................Wind Speed
     Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions