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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 PM EDT Sat Jul 25 2026
VAZ046-260800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
701 PM EDT Sat Jul 25 2026
Date 07/25/26 Sun 07/26/26 Mon 07/27/26 Tue
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 86 65 87 68
TEMP 70 66 64 63 67 77 84 84 78 70 68 66 68 80 86 87 81 72 70 69 71
DEWPT 67 66 64 62 65 69 68 68 69 69 67 65 68 71 69 69 70 70 70 69 70
MIN/MAX RH 99 55 100 54 100
RH 90100100 97 93 76 59 59 74 97 97 97100 74 57 55 69 93100100 97
WIND DIR S S SW SW SW W W SW SE SE E NW NW NW W SW S S SW SW SW
WIND SPD 2 2 1 1 1 2 2 3 2 2 1 1 2 3 4 4 3 4 4 5 6
CLOUDS SC FW SC SC SC SC SC SC B1 B1 SC SC B1 B1 SC SC SC B1 B1 B1 B1
CLOUDS(%) 27 9 34 47 48 34 50 48 54 57 41 47 59 53 45 42 30 51 56 56 64
VSBY 10 8 4 2 2 10 10 10 10 9 4 4 8 9 10 10 7 7 7 7
POP 12HR 0 30 40 5 30
RAIN SHWRS IS SC SC IS IS SC SC SC
TSTMS IS SC IS IS
Obvis PF PF PF PF PF PF
MIX HGT <1 <1 <1 <1 <1 2 5 4 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR S S S SW N N N W E E E E S NE SE SE S
T WIND SPD 5 2 2 2 0 5 3 2 2 2 1 2 2 1 1 5 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP PR
ADI 3 1 1 1 0 18 19 12 1 1 1 1 2 4 7 36 4
MAX LVORI 8 10 10 10 9 3 2 2 3 8 9 8 9 3 3 1 3
STABILITY F G G F A A B A F F F F B B A A G
CEILING None None None None None None None None None
STA PRES 29.27 29.24 29.22 29.16 29.17 29.17 29.19 29.13
Date 07/28Wed 07/29/26Thu 07/30/26Fri 07/31/26Sat 08/01/26
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 67 87 64 87 64 88 66 88
TEMP 87 82 71 70 85 79 68 67 84 79 67 68 86 80 69 69 85 81
DEWPT 76 74 70 69 69 68 64 65 66 66 63 65 67 68 66 67 69 69
RH 70 77 97 97 59 69 87 93 55 64 87 90 53 67 90 93 59 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 SC SC SC FW FW FW SC SC SC SC SC SC SC SC B1
POP 12HR 70 40 20 20 10 5 10 10 30
RAIN SHWRS SC NM SC IS IS SC
TSTMS SC SC IS 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
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