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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri Jul 24 2026
VAZ018-250800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
401 PM EDT Fri Jul 24 2026
Date 07/24/26 Sat 07/25/26 Sun 07/26/26 Mon
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 78 61 84 63
TEMP 71 67 64 63 63 63 68 74 76 70 66 64 62 64 78 83 82 73 68 65 63 66
DEWPT 62 63 63 62 63 63 68 69 68 67 63 61 60 62 65 65 65 64 61 61 60 63
MIN/MAX RH 100 75 95 53 92
RH 73 87 97 97100100100 84 76 90 90 90 93 93 64 55 56 73 78 87 90 90
WIND DIR SE SE SE E E E E SE SE E N W W NW NW NW NW NW NW W W W
WIND SPD 3 2 1 1 1 1 1 2 2 1 0 1 2 2 3 3 4 3 2 1 2 2
WIND GUST 13
CLOUDS B2 B2 B2 B2 B2 B2 B2 B1 SC B1 FW FW SC SC FW SC SC SC FW FW SC SC
CLOUDS(%) 80 86 86 77 79 84 84 68 43 66 21 22 28 28 9 28 28 28 21 22 29 45
VSBY 10 6 6 1 1 1 7 7 10 10 8 5 6 6 7 7 7 7 10 10 10
POP 12HR 80 40 5 5 5
RAIN D C L C C
RAIN SHWRS IS IS
TSTMS IS
Obvis PF PF PF
MIX HGT 2 <1 <1 <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 4 6 5 1
T WIND DIR E E E SE SE SE SE SE N SE NW W NW NW N NW NW NW
T WIND SPD 6 8 6 6 4 4 5 5 0 2 1 2 3 4 9 5 6 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 18 4 3 3 2 5 9 13 0 1 1 1 2 4 45 39 44 4
MAX LVORI 3 6 8 8 9 9 8 4 4 7 8 7 7 6 1 1 1 3
STABILITY B F F F F B B B A F G G G A A A A G
CEILING 100 100 100 None None None None None None
STA PRES 27.91 27.88 27.88 27.81 27.80 27.78 27.77 27.71
Date 07/27Tue 07/28/26Wed 07/29/26Thu 07/30/26Fri 07/31/26
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 88 68 87 66 85 63 86 64 87
TEMP 85 78 70 70 85 76 70 69 83 75 66 66 83 76 67 67 84 76
DEWPT 67 68 65 67 71 70 67 66 66 64 61 62 63 63 61 62 65 65
RH 55 71 84 90 63 82 90 90 57 69 84 87 51 64 81 84 53 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B2 B2 B1 SC SC SC FW FW SC SC SC FW SC B1
POP 12HR 10 30 70 30 10 10 10 10 30
RAIN SHWRS IS SC SC NM SC SC
TSTMS 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
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