
Thunderstorms are expected across portions of the area late tonight into Tuesday, and then Tuesday afternoon into Tuesday evening. Visit this link for details on what is expected. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Mon Jul 27 2026
VAZ012-272000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
731 AM EDT Mon Jul 27 2026
Date Mon 07/27/26 Tue 07/28/26 Wed 07/29/26
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 86 63 83 61 78
TEMP 64 74 81 85 77 67 65 65 67 74 78 81 75 67 65 63 62 70 74 77 71
DEWPT 64 67 64 63 65 63 63 62 65 70 70 69 67 65 63 62 62 63 61 61 60
MAX/MIN RH 48 95 67 100 57
RH 100 79 56 48 67 87 93 90 93 87 76 67 76 93 93 97100 78 64 58 68
WIND DIR NW NW NW NW NW W W W W W W W NW NW NW NW NW NW NW NW NW
WIND SPD 2 2 2 2 1 1 2 3 4 5 6 5 5 4 3 3 4 5 5 5 4
WIND GUST 14 16 17 16 16 16 13
CLOUDS SC SC SC SC SC SC SC B2 B2 B1 OV SC B1 B1 B1 B1 B1 SC FW FW FW
CLOUDS(%) 36 41 40 28 30 36 36 70 78 64 90 38 55 55 58 56 51 36 20 15 11
VSBY 4 10 10 10 10 10 9 10 9 8 10 10 10 10 10 10 8 10 10 10 10
POP 12HR 0 20 80 30 0
RAIN SHWRS IS IS SC O IS SC SC
TSTMS IS IS SC NM IS SC
Obvis PF
MIX HGT <1 3 4 5 <1 <1 <1 <1 <1 2 3 3 1 <1 1 1 2 3 4 5 2
T WIND DIR N NW N W W SW SW W W W W W W NW N NW NW N NW NW NW
T WIND SPD 4 9 5 6 4 3 4 9 5 4 11 12 9 11 11 13 14 17 17 16 10
DISPERSION VP VP VP VP PR VP VP VP VP
ADI 4 35 31 42 2 2 2 4 4 13 34 45 6 8 5 6 32 68 96 93 5
MAX LVORI 9 3 1 1 3 6 6 6 6 4 3 1 4 6 7 6 4 3 1 1 3
STABILITY A A A A G G G F C C C A E E F F C A A A F
CEILING None None None 0 0 None None None None None
STA PRES 27.17 27.13 27.10 27.06 27.05 26.98 27.01 27.03 27.08 27.09
Date Thu 07/30/26Fri 07/31/26Sat 08/01/26Sun 08/02/26
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 54 79 54 82 58 81 61 78
TEMP 58 58 74 71 58 59 78 73 61 62 76 72 63 63 74 70
DEWPT 57 58 59 60 56 58 59 61 58 60 62 63 61 63 65 65
RH 96100 59 68 93 96 52 66 90 93 62 73 93100 74 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC FW CL FW FW SC SC B1 B2 B2 B1 B1 B2 B2
POP 12HR 0 5 0 0 5 40 50 60
RAIN SHWRS SC SC SC SC NM
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
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