Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sun Sep 20 2026
VAZ018-210800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
401 PM EDT Sun Sep 20 2026
Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed
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 66 81 64 72 58
TEMP 80 73 70 68 66 66 77 79 76 69 67 67 66 65 69 72 70 65 63 62 60 58
DEWPT 66 65 64 64 63 64 68 69 69 67 65 64 63 63 65 67 66 64 62 60 59 57
MIN/MAX RH 92 65 93 85 99
RH 62 76 81 87 90 93 74 72 79 93 93 90 90 93 87 84 87 97 97 93 96 96
WIND DIR NW NW W W N W SE SE SE E SE E SE E E E E E NE NE NE E
WIND SPD 3 2 1 1 0 1 2 3 2 2 3 2 2 2 2 3 3 4 6 6 8 8
WIND GUST 16 19 23 24 24
CLOUDS B1 B1 B1 SC SC B1 B2 B2 OV OV OV OV OV OV OV OV OV OV OV B2 B2 B2
CLOUDS(%) 69 69 52 38 37 61 73 77 96 88 88 93 94 93 96100100100100 87 80 86
VSBY 7 10 10 10 2 1 6 3 3 6 4 1 2 2 2 3 3 6 6 6 6 6
POP 12HR 5 90 80 90 90
RAIN SHWRS IS SC SC NM O NM O NM SC NM NM O O O O NM NM NM
TSTMS IS IS SC SC SC SC SC SC
MIX HGT 3 <1 <1 <1 <1 <1 2 2 1 <1 <1 <1 <1 <1 1 2 1 <1
T WIND DIR W S SW W W N S W SE E E E NE NE NE NE NE NE
T WIND SPD 8 6 4 2 2 5 2 5 9 10 5 4 5 6 5 8 10 11
DISPERSION VP VP VP VP VP VP VP VP VP PR PR PR
ADI 26 3 2 1 1 4 5 16 12 5 3 2 3 5 11 14 15 10
MAX LVORI 2 4 5 5 6 6 3 3 4 6 6 6 6 6 5 4 5 7
STABILITY C F F G G C C C C F F F F C C D D D
CEILING None None 700 1300 300 0 100 100 100
STA PRES 27.75 27.76 27.79 27.76 27.84 27.84 27.87 27.90
Date 09/23Thu 09/24/26Fri 09/25/26Sat 09/26/26Sun 09/27/26
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 63 54 61 51 68 48 72 49 74
TEMP 63 58 57 55 60 56 54 52 66 58 53 49 69 60 53 50 71 62
DEWPT 62 57 55 53 59 54 51 49 55 51 46 45 51 50 47 47 54 54
RH 97 96 93 93 96 93 90 89 68 77 77 86 53 69 80 89 55 75
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 70 80 40 10 5 5 5 5 5
RAIN SHWRS NM NM O NM SC 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