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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 AM EDT Wed Jul 22 2026
VAZ024-222000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
901 AM EDT Wed Jul 22 2026
Date Wed 07/22/26 Thu 07/23/26 Fri 07/24/26
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 87 65 78 60 80
TEMP 83 87 85 78 74 71 67 65 72 77 78 74 65 62 60 63 73 78 80 74
DEWPT 70 67 67 69 66 64 61 57 58 59 60 61 60 59 57 59 61 61 62 62
MAX/MIN RH 51 81 53 90 54
RH 65 52 55 74 76 79 81 75 61 54 54 64 84 90 90 87 66 56 54 66
WIND DIR W W W W NW N N N NE E E SE N N NE NE E E SE E
WIND SPD 4 5 4 1 1 2 3 4 3 3 3 2 0 0 1 1 2 3 3 1
WIND GUST 14
CLOUDS B1 B1 B1 B1 B1 B1 B1 B1 SC SC FW FW SC SC B1 B1 B2 B2 B2 B2
CLOUDS(%) 69 69 61 64 63 55 63 54 38 28 20 20 34 34 65 62 77 85 78 79
VSBY 9 10 10 10 8 7 6 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 20 5 5 20
RAIN SHWRS IS IS IS IS
TSTMS IS
MIX HGT 4 5 3 <1 <1 <1 <1 1 2 4 4 <1 <1 <1 <1 <1 3 4 4 1
T WIND DIR W W W N N N NE NE NE N N SE SE NE NE NE SE SE SE SE
T WIND SPD 19 16 11 1 3 5 12 14 9 0 0 5 2 2 3 4 13 11 10 11
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 95 69 51 1 2 3 6 22 30 0 0 3 1 1 2 5 52 56 51 5
MAX LVORI 3 1 1 4 4 4 4 3 2 2 2 3 5 7 7 5 1 1 1 3
STABILITY A C A F F F F C A A A G G G F A B B B F
CEILING 3700 5100 4300 None None None 17500 14400 5900
STA PRES 28.40 28.44 28.51 28.59 28.58 28.63 28.65 28.67 28.60
Date Sat 07/25/26Sun 07/26/26Mon 07/27/26Tue 07/28/26
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 62 81 63 89 65 92 66 91
TEMP 65 65 78 74 66 66 86 81 69 69 90 83 70 69 88 82
DEWPT 62 63 66 66 65 66 68 69 67 68 69 68 67 68 69 68
RH 90 93 67 76 97100 55 67 93 97 50 61 90 97 54 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 SC SC SC SC SC FW SC SC B1 B1 SC B1
POP 12HR 40 30 20 10 10 20 40 40
RAIN SHWRS IS SC SC IS IS IS IS SC SC IS SC
TSTMS IS 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