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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
210 PM EDT Thu Jul 23 2026
VAZ018-240800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
210 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 62 74 63 78 63
TEMP 74 68 65 65 64 63 68 72 72 68 66 66 65 64 70 75 77 71 67 65 63 65
DEWPT 65 62 60 60 60 60 64 64 65 63 62 62 63 63 67 68 68 66 64 63 62 64
MIN/MAX RH 92 75 100 73 96
RH 74 81 84 84 87 90 87 76 79 84 87 87 93 97 90 79 74 84 90 93 97 97
WIND DIR SE SE E E E E SE SE SE SE SE SE N SE SE SE S S W W W NW
WIND SPD 4 3 2 1 2 2 4 4 4 2 1 1 0 1 2 2 2 1 1 1 1 2
WIND GUST 13
CLOUDS B1 SC B1 B1 B1 B1 B2 B2 B1 B2 B1 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC
CLOUDS(%) 51 46 57 67 66 69 73 82 69 83 68 79 81 83 86 73 73 57 48 43 45 39
VSBY 10 10 10 8 5 5 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 20 50 60 20
RAIN SHWRS IS IS IS IS SC SC SC NM NM IS IS
TSTMS SC SC
Obvis PF PF
MIX HGT 3 1 <1 <1 <1 1 2 3 3 <1 <1 <1 <1 <1 2 2 2 <1
T WIND DIR E SE SE S E E E E E E E E E N N NW NW NW
T WIND SPD 8 4 5 3 3 5 11 10 9 6 4 4 4 2 2 6 9 11
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 23 2 3 2 2 9 32 31 27 3 2 2 2 2 5 20 21 5
MAX LVORI 3 5 5 5 6 5 4 3 3 5 6 6 6 8 6 3 3 5
STABILITY C F F F F B C C C F F F F B B B B F
CEILING None 1300 1000 1500 800 1600 1600 100 2500 None
STA PRES 27.92 27.95 27.93 27.94 27.90 27.89 27.86 27.87 27.80
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 84 64 88 68 89 67 85 63 86
TEMP 83 74 66 67 85 78 70 70 85 78 71 69 83 75 66 66 83 76
DEWPT 68 67 63 65 67 68 65 67 70 69 66 65 65 63 60 61 63 64
RH 61 79 90 93 55 71 84 90 61 74 84 87 55 66 81 84 51 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC FW SC B1 B1 B1 SC B1 B1 SC SC SC FW FW FW SC
POP 12HR 30 10 10 30 30 30 20 10 20
RAIN SHWRS SC SC IS SC SC IS IS
TSTMS SC IS SC IS 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