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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
601 PM EDT Wed Jul 22 2026
VAZ018-230800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
601 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 62 73 60 75 62
TEMP 74 68 66 64 64 69 71 71 68 64 63 61 62 70 74 72 68 65 65 64 63
DEWPT 66 63 61 60 60 60 61 61 62 60 59 58 58 62 63 63 62 61 61 61 61
MIN/MAX RH 93 68 90 68 95
RH 76 84 84 87 87 73 71 71 81 87 87 90 87 76 69 73 81 87 87 90 93
WIND DIR NW NW N N NE E E E SE SE E NE E E SE SE SE E E E E
WIND SPD 3 3 2 2 3 3 3 3 3 1 1 1 2 4 4 4 2 1 1 1 1
WIND GUST 13
CLOUDS B1 B1 B2 B2 B2 B1 B2 B1 FW SC SC B1 B1 B2 OV B2 B2 B2 B2 B2 B2
CLOUDS(%) 52 61 77 73 72 59 79 53 18 37 39 66 68 77 89 81 86 80 81 78 84
VSBY 10 10 8 6 8 10 10 10 10 10 10 10 7 10 10 10 10 10 10 7
POP 12HR 20 20 10 20 40
RAIN SHWRS IS IS IS SC SC SC SC SC
Obvis PF
MIX HGT <1 <1 <1 <1 1 2 3 3 <1 <1 <1 <1 1 3 3 4 1
T WIND DIR W N N NE NE E E SE SE SE N NW NE SE SE SE SE
T WIND SPD 8 2 9 9 11 8 2 2 5 1 2 2 1 12 9 6 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 4 1 4 4 18 23 9 9 3 1 1 1 2 36 29 25 4
MAX LVORI 4 5 5 5 4 3 3 3 5 6 6 7 6 3 3 3 5
STABILITY F F F F B B B B G G G F B C C C F
CEILING 3100 2100 1300 None None 4200 2800 3100 4000
STA PRES 27.76 27.81 27.89 27.88 27.92 27.93 27.95 27.90
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 77 63 84 65 87 66 87 65 85
TEMP 74 70 66 65 81 75 68 68 84 77 69 68 84 76 69 67 83 75
DEWPT 67 65 63 64 68 68 64 66 67 67 65 66 69 67 64 64 65 64
RH 79 84 90 97 65 79 87 93 57 71 87 93 61 74 84 90 55 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 SC SC SC B1 SC SC B1 SC B1 B1 B1 B1 SC SC SC B1
POP 12HR 40 20 40 30 20 40 30 20 30
RAIN SHWRS SC SC IS IS SC SC IS SC SC IS SC IS SC
TSTMS SC SC IS IS IS 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