Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Thu Jul 23 2026
VAZ024-240800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
731 PM EDT Thu Jul 23 2026
Date 07/23/26 Fri 07/24/26 Sat 07/25/26 Sun
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 61 79 62 81 63
TEMP 73 66 64 62 63 73 77 78 74 68 66 64 65 72 77 80 76 68 65 63 66
DEWPT 63 62 61 60 61 63 64 64 64 64 63 63 64 67 67 67 67 67 65 63 66
MIN/MAX RH 95 61 100 65 100
RH 71 87 90 93 93 71 64 62 71 87 90 97 97 84 71 65 74 97100100100
WIND DIR SE N N N NE E SE SE SE N N N N N S S S N N N N
WIND SPD 1 0 0 0 1 2 3 3 1 0 0 0 0 0 2 2 1 0 0 0 0
CLOUDS SC B1 SC B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 B2 B2 B1 SC B1 SC B1 SC
CLOUDS(%) 44 52 44 59 67 69 75 71 83 73 84 68 62 84 82 58 50 65 50 59 40
VSBY 10 10 9 9 10 10 10 10 10 7 6 5 10 10 10 10 10
POP 12HR 10 10 40 40 20
RAIN SHWRS IS SC IS SC SC SC SC IS IS
TSTMS SC SC
Obvis PF
MIX HGT <1 <1 <1 <1 <1 3 4 3 <1 <1 <1 <1 <1 2 2 2 <1
T WIND DIR E E N N N E E E E E NE NE NE NW NW NW W
T WIND SPD 5 3 1 2 3 13 11 10 8 2 1 4 3 3 4 5 1
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 1 1 4 47 50 38 4 1 1 2 4 9 14 18 1
MAX LVORI 3 6 7 7 6 3 1 1 3 6 7 8 9 4 3 3 4
STABILITY F F F F B B B B F F F F B B B B F
CEILING None 3300 3300 3400 3100 2400 900 4300 4100
STA PRES 28.66 28.65 28.66 28.61 28.60 28.58 28.59 28.51
Date 07/26Mon 07/27/26Tue 07/28/26Wed 07/29/26Thu 07/30/26
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 88 63 92 67 93 67 91 63 90
TEMP 85 79 67 67 89 84 71 70 90 84 71 69 88 81 68 67 87 81
DEWPT 68 69 66 67 68 70 68 69 71 71 68 68 66 65 63 64 64 65
RH 57 72 97100 50 63 90 97 54 65 90 97 48 58 84 90 46 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC FW SC B1 B1 SC SC B1 B1 FW SC SC FW FW FW SC
POP 12HR 40 10 5 30 30 30 20 10 20
RAIN SHWRS SC SC IS SC SC IS IS
TSTMS SC IS SC SC IS IS
$$
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