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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Jul 22 2026
VAZ024-230800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Wed Jul 22 2026
Date 07/22/26 Thu 07/23/26 Fri 07/24/26 Sat
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 78 59 80 61
TEMP 71 68 65 66 72 75 75 73 65 62 60 62 73 78 79 74 67 64 62 64
DEWPT 68 66 62 59 59 60 60 62 61 60 58 59 62 62 62 62 63 62 61 63
MIN/MAX RH 93 56 95 56 99
RH 90 93 90 78 64 60 60 68 87 93 93 90 68 58 56 66 87 93 97 97
WIND DIR NW N N N NE NE E SE N N N N E E E E N N N N
WIND SPD 1 2 3 3 2 2 3 2 0 0 0 0 2 3 3 1 0 0 0 0
WIND GUST 13 13
CLOUDS B1 B1 B1 B2 B1 B2 SC FW FW FW SC B1 B2 B2 B2 B2 B2 B2 B2 B1
CLOUDS(%) 69 58 67 72 59 72 27 19 22 14 50 60 75 84 79 74 85 77 73 69
VSBY 9 8 2 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 10 5 5 30
RAIN SHWRS IS IS IS IS SC SC SC
TSTMS
Obvis PF
MIX HGT <1 <1 <1 1 3 4 4 <1 <1 <1 <1 <1 3 4 3 <1
T WIND DIR W NE NE NE NE E SE SE N N N N E E SE SE
T WIND SPD 1 4 12 13 11 5 3 4 1 3 3 2 9 6 4 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 2 6 25 37 26 16 2 1 2 2 2 31 30 18 3
MAX LVORI 7 6 6 3 1 2 2 3 6 7 7 6 3 1 2 3
STABILITY F F F B B B A G G G F B B B B F
CEILING 1100 4100 3700 None None None 5400 3900 3400
STA PRES 28.46 28.52 28.61 28.60 28.64 28.65 28.67 28.61
Date 07/25Sun 07/26/26Mon 07/27/26Tue 07/28/26Wed 07/29/26
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 80 62 87 64 91 65 91 65 89
TEMP 77 74 66 65 84 79 68 67 88 82 69 69 88 82 69 68 88 80
DEWPT 65 65 64 65 68 70 67 67 68 69 67 68 69 69 66 66 66 66
RH 67 74 93100 59 74 97100 52 65 93 97 54 65 90 93 48 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 B1 SC SC B1 SC SC SC SC B1 B1 SC B1 SC SC SC SC
POP 12HR 30 30 30 20 30 30 40 30 20
RAIN SHWRS SC IS SC IS SC IS SC SC SC IS SC SC IS IS
TSTMS IS SC IS SC IS 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