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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Mon Jul 27 2026
VAZ012-280800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
401 PM EDT Mon Jul 27 2026
Date 07/27/26 Tue 07/28/26 Wed 07/29/26 Thu
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 82 60 77 54
TEMP 85 77 67 65 65 67 73 77 80 74 67 65 62 62 70 73 76 70 62 58 55 58
DEWPT 63 65 63 63 63 66 70 70 69 67 65 63 62 62 63 61 60 59 59 57 55 57
MIN/MAX RH 99 70 100 59 100
RH 48 67 87 93 93 97 90 79 69 79 93 93100100 78 66 58 68 90 96100 96
WIND DIR NW W W W W W W W W NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 1 1 1 2 3 4 5 5 5 4 4 3 3 4 5 5 5 4 3 3 3 3
WIND GUST 14 16 17 16 16 14 16
CLOUDS SC SC SC SC B1 B2 B2 B2 B2 B1 SC SC SC B1 FW FW FW CL SC FW SC FW
CLOUDS(%) 39 37 45 49 57 80 84 77 70 61 50 36 41 68 20 21 25 4 26 19 28 24
VSBY 10 10 10 10 10 5 4 6 6 7 7 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 60 30 0 5
RAIN SHWRS SC SC NM SC SC SC
TSTMS SC NM SC SC
MIX HGT 5 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 1 2 3 4 5 1
T WIND DIR NW W SW SW W SW W W W NW NW N NW NW NW NW NW NW
T WIND SPD 6 4 4 5 10 26 28 18 25 23 9 13 13 19 23 20 19 13
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 45 2 2 3 5 29 68 54 73 15 6 6 6 38 95107114 6
MAX LVORI 1 3 6 6 6 4 4 3 3 4 6 6 8 4 3 1 1 3
STABILITY A G F F F C C C C E E G F C A A A F
CEILING None 4300 600 1000 None 600 None None None
STA PRES 27.12 27.09 27.00 26.96 27.00 27.04 27.08 27.11
Date 07/30Fri 07/31/26Sat 08/01/26Sun 08/02/26Mon 08/03/26
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 77 54 81 57 83 60 82 61 80
TEMP 73 71 58 59 77 72 60 62 78 73 64 63 76 73 64 64 76 72
DEWPT 59 59 56 58 60 62 57 60 62 63 61 63 65 65 63 64 67 66
RH 62 66 93 96 56 71 90 93 58 71 90100 69 76 97100 74 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC SC B1 B2 B1 B1 B2 B2 B1 B1 B1 B1
POP 12HR 0 0 5 5 20 30 60 30 50
RAIN SHWRS IS SC IS IS NM SC SC SC
TSTMS IS IS IS IS 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
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