
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 >
Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Mon Jul 27 2026
VAZ024-272000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 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 92 66 90 65 87
TEMP 81 89 90 81 72 69 68 69 80 87 89 82 73 68 66 68 80 85 86 79
DEWPT 69 67 66 69 68 67 67 68 72 72 72 69 68 66 64 65 65 63 63 61
MAX/MIN RH 44 99 57 95 44
RH 67 48 45 67 87 93 97 97 77 61 57 65 84 93 93 90 60 48 46 54
WIND DIR N N N NE N N W W SW SW W W NW W W NW NW NW NW NW
WIND SPD 1 2 2 1 0 0 1 3 5 8 8 6 3 3 3 5 8 8 9 6
WIND GUST 18 20 21 23 16 13 13 19 21 21 23 23
CLOUDS FW SC SC FW SC SC B2 B2 B1 B2 SC FW FW FW FW FW FW FW FW FW
CLOUDS(%) 23 39 37 16 28 26 83 80 69 76 50 19 17 6 16 11 17 20 23 8
VSBY 10 10 10 10 10 7 9 10 8 10 7 10 10 10 10 10 10 10 10 10
POP 12HR 5 10 80 0 0
RAIN SHWRS NM SC NM SC
TSTMS IS SC SC
MIX HGT 3 6 5 <1 <1 <1 <1 <1 1 3 3 <1 <1 <1 <1 1 4 6 7 2
T WIND DIR N N W S W NW NW NW W W SW W N N NW NW N NW NW NW
T WIND SPD 5 3 5 1 1 2 2 2 2 10 9 9 6 4 5 8 17 13 12 14
DISPERSION VP VP VP VP PR VP VP VP PR
ADI 23 25 39 1 1 1 1 2 4 34 31 4 3 2 3 11 83 90 90 7
MAX LVORI 3 2 1 4 6 7 8 8 4 1 1 3 5 6 6 5 1 1 1 2
STABILITY A A A G G G F B C C B F G G G A B B B F
CEILING None None None 0 0 None None None None None
STA PRES 28.38 28.32 28.29 28.26 28.24 28.16 28.19 28.21 28.27 28.27
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 61 88 61 89 64 88 66 83
TEMP 65 65 86 79 65 65 86 80 68 67 86 80 70 68 82 76
DEWPT 61 61 62 61 61 62 62 64 63 64 65 67 67 67 69 69
RH 87 87 45 54 87 90 45 58 84 90 50 65 90 97 65 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW SC SC SC B1 B2 B1 B1 B1 B2
POP 12HR 0 0 0 0 10 30 40 60
RAIN SHWRS SC SC SC SC NM
TSTMS 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