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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Thu Jul 23 2026
VAZ018-232000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
631 AM EDT Thu Jul 23 2026
Date Thu 07/23/26 Fri 07/24/26 Sat 07/25/26
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 73 61 72 63 76
TEMP 64 68 72 71 67 63 62 61 63 67 71 72 67 66 66 65 63 70 75 73 68
DEWPT 60 59 59 60 60 58 58 58 57 59 60 60 62 61 61 62 63 66 67 67 65
MAX/MIN RH 63 89 66 98 77
RH 87 73 64 68 78 84 87 90 81 75 68 66 84 84 84 90100 87 76 81 90
WIND DIR E E SE SE SE E NE NE E E SE SE SE SE SE E E E SE SE SE
WIND SPD 2 3 3 4 3 1 1 1 2 3 4 4 2 1 1 1 1 2 2 3 1
WIND GUST 13
CLOUDS SC B1 B1 SC SC SC SC B1 B2 B1 B2 B1 OV B2 B2 B2 B2 B2 B2 B1 B1
CLOUDS(%) 46 59 63 33 42 41 32 56 70 68 76 69 88 86 83 80 83 85 75 62 51
VSBY 9 10 10 10 10 10 7 5 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 10 40 70 50
RAIN SHWRS SC SC SC SC NM NM SC SC SC SC IS
TSTMS IS IS
MIX HGT 1 2 3 3 <1 <1 <1 <1 <1 3 4 3 <1 <1 <1 <1 <1 1 2 2 1
T WIND DIR E E E E SE SE N NE NE E E E SE SE E E E NE E N S
T WIND SPD 6 6 3 5 8 2 1 3 5 14 10 8 8 5 5 3 3 5 2 0 1
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 10 19 14 23 4 1 1 2 7 48 36 27 4 3 3 2 4 9 6 0 1
MAX LVORI 4 3 3 3 4 5 6 6 4 3 3 3 5 5 5 7 9 5 4 6 7
STABILITY A B B A F F G F B B C C F F F F B B B B F
CEILING None None None None 1600 1600 3200 3200 4500 2300
STA PRES 27.91 27.89 27.92 27.91 27.92 27.89 27.90 27.87 27.87 27.82
Date Sun 07/26/26Mon 07/27/26Tue 07/28/26Wed 07/29/26
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 63 83 64 86 68 88 66 84
TEMP 65 65 80 74 66 66 84 77 70 70 86 78 69 68 82 75
DEWPT 62 63 68 67 63 64 67 68 65 66 70 68 66 65 67 65
RH 90 93 67 79 90 93 57 74 84 87 59 71 90 90 61 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC B1 B1 SC SC SC SC SC B1 B1 B1 B1 SC B1 SC
POP 12HR 20 40 10 10 30 40 40 20
RAIN SHWRS IS IS SC SC SC SC SC SC IS
TSTMS 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