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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri Sep 4 2026
VAZ046-050800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Fri Sep 4 2026
Date 09/04/26 Sat 09/05/26 Sun 09/06/26 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 72 94 66 81 61
TEMP 77 75 73 74 87 93 89 79 72 70 68 67 73 77 80 75 68 64 61 63
DEWPT 70 69 69 70 71 71 71 71 70 69 68 67 67 66 65 65 64 63 61 62
MIN/MAX RH 88 49 100 61 100
RH 79 82 87 87 59 49 56 77 93 97100100 81 69 60 71 87 97100 97
WIND DIR SW W W NW N NW N NE N NE NE NE NE NE NE NE NE NE NE NE
WIND SPD 2 3 3 4 5 6 6 4 4 3 5 6 8 8 8 5 4 3 4 5
CLOUDS SC FW SC SC B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 SC B1 SC SC SC
CLOUDS(%) 42 12 41 38 52 58 67 66 73 79 77 72 77 65 63 47 57 46 45 33
VSBY 10 8 8 9 10 10 10 10 10 7 7 10 10 10 10 10 10 10 10 10
POP 12HR 20 40 70 30 5
RAIN SHWRS SC SC SC NM SC SC SC SC SC
TSTMS SC SC SC SC
MIX HGT <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 1 2 3 4 <1
T WIND DIR NE E SE N NW W NW NE NE NE NE NE NE NE NE NE
T WIND SPD 3 2 2 3 8 10 6 4 4 4 11 19 13 16 13 16
DISPERSION VP VP VP VP VP VP PR PR VP VP VP
ADI 2 1 1 3 26 57 25 3 3 2 8 33 34 54 51 11
MAX LVORI 4 5 6 6 2 1 2 4 8 9 8 4 3 3 1 3
STABILITY G G F A C B B E E F E C C C C E
CEILING None None None 12200 3600 800 2100 3000 None
STA PRES 29.20 29.19 29.21 29.10 29.14 29.14 29.23 29.24
Date 09/07Tue 09/08/26Wed 09/09/26Thu 09/10/26Fri 09/11/26
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 83 59 86 62 91 69 95 66 88
TEMP 80 74 63 62 83 77 66 63 88 82 73 71 93 84 72 67 86 79
DEWPT 61 60 60 60 61 60 58 59 64 62 60 62 66 64 63 61 61 59
RH 52 62 90 93 47 56 75 87 45 51 64 73 41 51 73 81 43 50
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW SC FW FW FW FW FW FW FW FW FW SC FW FW
POP 12HR 5 0 0 0 0 0 5 10 10
$$
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