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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
846 PM EDT Tue Aug 3 2021

VAZ018-040900-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
846 PM EDT Tue Aug 3 2021

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

MIN/MAX TEMP                 59          81          60          85          61
TEMP                65 62 61 62 74 79 80 71 66 63 61 63 76 82 83 74 69 65 63 66
DEWPT               56 57 56 57 58 57 58 58 57 57 57 58 62 59 59 60 58 58 58 60
MIN/MAX RH                   87          45          87          43          85
RH                  73 84 84 84 57 47 47 63 73 81 87 84 62 46 44 62 68 78 84 81
WIND DIR             E  E NE NE  E  E  E  E  E  E  N  N  E  E SE SE  S SW  W  W
WIND SPD             1  1  2  2  4  4  2  2  1  0  1  1  1  2  1  1  0  1  1  1
CLOUDS              SC SC SC FW SC SC SC SC SC SC SC SC FW FW FW SC FW FW FW FW
CLOUDS(%)           45 50 45 17 31 31 30 37 42 37 33 28 24 19 23 27 18  8 10 11
VSBY                 7  7  7  7  7  7  7  7  7  7  7  7  7  7  7  7  7         
POP 12HR                     10          10          10          20           5
RAIN SHWRS                                                 IS IS               
TSTMS                                                      IS IS               
LAL                  1  1  1  1  1  1  1  1  1  1  1  1  1  2  2               
HAINES               3  3  3  5  5  5  4  3  3  4  4  4  4  4  5  4            
MIX HGT             <1 <1 <1  1  3  4  5  3  1 <1 <1 <1  4  6  6  2            
T WIND DIR           E  E  E NE  E  E NE NE NE  W  W  W SE SE SE  S            
T WIND SPD           6  4  5  9 17 18 14 11  5  2  2  1  2  3  5  8            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  3  2  2 16 55 74 86  5  3  1  1  2 11 27 38  4            
MAX LVORI            3  5  5  4  1  1  1  3  3  6  6  5  2  2  1  3            
STABILITY            F  F  F  B  C  C  B  G  F  G  G  B  B  B  B  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            27.84 27.85 27.87 27.85 27.88 27.90 27.93 27.90            


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

MAX/MIN TEMP       88      66      86      65      89      68      92      67      91
TEMP          86 76 68 68 83 78 69 69 86 80 72 71 88 82 72 71 87 82
DEWPT         62 62 60 62 65 65 62 63 64 65 62 63 66 65 63 64 66 66
RH            45 62 76 81 55 64 78 81 48 60 71 76 48 56 73 79 50 58
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC B1 B1 B1 B1 SC FW FW FW FW FW FW SC SC FW FW SC
POP 12HR           10      10      30      10      20       0      20      10      30
RAIN SHWRS                IS SC          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