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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Sat Aug 1 2026
VAZ018-020800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 AM EDT Sat Aug 1 2026
Date 07/31/26 Sat 08/01/26 Sun 08/02/26 Mon
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 63 86 67 78 67
TEMP 66 64 67 79 84 83 76 74 72 70 69 71 74 75 72 71 70 70 70
DEWPT 55 57 60 62 63 64 64 64 65 66 67 71 72 73 71 69 68 68 69
MIN/MAX RH 81 49 99 86 97
RH 68 78 78 56 49 53 66 71 79 87 93100 93 94 97 93 93 93 97
WIND DIR SW SW S S S S S SE SE SE SE SE SE SE SE S S SW SW
WIND SPD 1 1 1 4 6 8 6 6 5 4 4 4 5 5 3 2 1 1 2
WIND GUST 19 21 23 23 23 18 16 14 17 16 14
CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 OV OV OV OV OV B2 B2 B2 B2 B2
CLOUDS(%) 73 73 73 79 87 83 86 86 85 91 92 91 92 92 83 83 82 73 72
VSBY 10 10 10 10 10 10 10 10 8 4 1 4 3 3 3 3 7 7 6
POP 12HR 0 30 70 90 70
RAIN SHWRS IS IS SC SC NM NM O O O O O IS IS SC
TSTMS IS IS IS IS IS IS SC SC SC SC
MIX HGT <1 <1 <1 3 6 5 2 <1 <1 <1 <1 1 2 2 1
T WIND DIR S SW SE S S S SE S S SE SE S S S S
T WIND SPD 3 1 2 18 18 20 6 9 16 10 6 10 14 18 11
DISPERSION VP VP PR PR PR VP VP VP VP VP
ADI 2 1 2 81 82 82 8 8 11 7 5 19 41 49 5
MAX LVORI 3 4 4 1 1 1 3 3 4 5 6 5 4 4 9
STABILITY F F A A C C D D E E C C C C F
CEILING 4400 17300 3400 3000 900 600 1100 1400
STA PRES 27.76 27.75 27.69 27.68 27.67 27.68 27.66
Date 08/03Tue 08/04/26Wed 08/05/26Thu 08/06/26Fri 08/07/26
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 80 66 82 66 84 68 87 68 87
TEMP 79 74 69 68 80 75 68 69 82 76 70 70 84 77 70 70 85 77
DEWPT 72 70 66 67 71 70 66 67 71 70 67 68 71 70 67 68 71 70
RH 79 87 90 97 74 84 93 93 69 82 90 93 65 79 90 93 63 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B1 B2 SC SC SC B1 SC SC SC B1 SC SC SC B1
POP 12HR 60 20 60 20 40 10 40 20 50
RAIN SHWRS SC NM IS IS NM IS SC SC IS IS SC
TSTMS SC IS SC IS SC SC 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
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