Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Sep 12 2026
VAZ024-130800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Sat Sep 12 2026
Date 09/12/26 Sun 09/13/26 Mon 09/14/26 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 67 90 65 86 55
TEMP 71 70 70 68 79 88 88 76 70 67 66 66 78 84 85 75 65 60 56 56
DEWPT 71 70 68 68 73 72 71 70 68 67 65 66 66 62 59 58 55 52 50 51
MIN/MAX RH 100 57 100 41 86
RH 100100 93100 82 59 57 82 93100 97100 67 48 41 55 70 75 80 83
WIND DIR N N N W NW NW NW NW NW W W NW N N N NE NE NE N N
WIND SPD 0 0 0 1 3 3 2 2 1 1 1 1 3 4 4 2 2 1 0 0
CLOUDS OV B2 B2 B1 SC SC FW FW FW SC CL FW SC FW FW FW FW SC SC FW
CLOUDS(%) 93 83 84 57 35 31 14 10 19 27 3 6 34 22 12 17 23 31 30 23
VSBY 5 3 3 3 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 50 10 5 10 0
RAIN SHWRS SC SC
TSTMS
Obvis PF PF PF PF
MIX HGT <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR SE SW SW W NW NW W NW NW W W N N N N N
T WIND SPD 6 10 3 2 8 9 9 11 4 3 2 4 14 14 12 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 3 5 2 2 29 49 39 5 2 2 1 4 73 92 78 2
MAX LVORI 9 9 10 9 3 1 1 4 6 10 10 9 1 1 1 3
STABILITY F F F A B B B G G G G A B B B G
CEILING 1100 200 None None None None None None None
STA PRES 28.46 28.46 28.50 28.45 28.48 28.50 28.58 28.62
Date 09/15Wed 09/16/26Thu 09/17/26Fri 09/18/26Sat 09/19/26
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 82 56 85 59 89 62 90 63 85
TEMP 78 69 59 57 83 74 62 61 87 76 65 64 88 78 67 64 83 75
DEWPT 56 60 56 55 64 65 61 59 65 65 62 61 68 67 65 63 66 65
RH 47 73 90 93 53 74 97 93 48 69 90 90 52 69 93 97 57 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW CL FW FW FW CL FW FW FW FW B1 B1 SC SC B1
POP 12HR 0 0 5 0 10 5 40 20 30
RAIN SHWRS SC 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