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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 AM EDT Sat Sep 5 2026
VAZ046-052000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
831 AM EDT Sat Sep 5 2026
Date Sat 09/05/26 Sun 09/06/26 Mon 09/07/26
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 89 66 80 61 83
TEMP 84 84 87 77 72 70 68 67 73 77 79 74 68 64 62 63 75 80 82 75
DEWPT 66 65 67 72 70 70 68 67 68 67 66 65 64 63 62 63 65 62 62 62
MAX/MIN RH 43 100 64 100 50
RH 55 53 52 85 93100100100 84 71 64 74 87 97100100 71 54 51 64
WIND DIR N N N NE NE NE NE NE NE NE NE NE NE NE NE NE NE E E E
WIND SPD 4 5 6 4 3 3 4 6 9 9 8 4 4 3 4 5 6 6 5 4
CLOUDS B1 B2 B2 B1 B2 B1 B1 B1 B1 B1 B1 SC SC SC SC SC FW SC SC FW
CLOUDS(%) 69 70 73 64 73 57 55 63 61 69 56 36 36 35 27 32 21 30 27 18
VSBY 10 10 10 10 8 6 3 6 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 60 40 5 5
RAIN SHWRS IS SC SC SC NM SC SC SC SC SC
TSTMS IS SC SC SC SC
MIX HGT 3 5 4 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 4 6 6 <1
T WIND DIR NW W W N NE N N NE NE NE NE NE NE N N NE E E E E
T WIND SPD 4 10 13 14 11 5 4 12 11 11 11 5 4 3 4 10 13 11 6 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 14 62 62 10 5 3 3 10 32 42 44 3 2 2 2 10 62 73 50 2
MAX LVORI 2 1 1 4 7 9 9 8 3 1 1 3 6 8 9 7 3 1 1 3
STABILITY C B B E F F E C C C C F F G F A B B A F
CEILING None 5100 3300 300 300 None None None None None
STA PRES 29.18 29.10 29.19 29.21 29.27 29.27 29.34 29.40 29.46 29.46
Date Tue 09/08/26Wed 09/09/26Thu 09/10/26Fri 09/11/26
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 59 85 61 90 69 94 65 87
TEMP 62 62 82 77 65 63 87 82 72 70 92 84 70 66 84 78
DEWPT 61 61 61 60 58 60 64 63 62 63 67 65 64 63 62 61
RH 97 97 49 56 78 90 46 53 71 78 44 53 81 90 48 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC FW FW FW FW FW FW SC SC FW SC
POP 12HR 0 0 0 0 0 10 20 20
RAIN SHWRS 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