Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Mon Sep 21 2026
NCZ003-220800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
431 PM EDT Mon Sep 21 2026
Date 09/21/26 Tue 09/22/26 Wed 09/23/26 Thu
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 65 75 59 65 55
TEMP 78 73 69 68 67 67 70 73 73 69 65 63 62 61 63 63 64 62 59 58 57 56
DEWPT 70 69 68 67 67 67 69 70 70 67 64 62 61 60 62 62 63 62 59 58 57 56
MIN/MAX RH 99 88 98 96 100
RH 76 87 97 97100100 97 90 90 93 97 97 97 97 97 97 97100100100100100
WIND DIR SE N N N N N E E E E NE NE NE NE NE NE NE NE NE NE NE NE
WIND SPD 2 0 0 0 0 0 1 3 2 3 3 2 3 4 5 5 5 5 4 3 3 4
CLOUDS B1 B2 B1 B2 B2 OV OV B2 OV OV OV OV OV OV OV B2 B2 B2 B2 OV B2 B2
CLOUDS(%) 63 86 65 75 80 89 96 87 88 93 90 95 93 91 91 85 83 85 85 88 87 84
VSBY 10 10 8 6 5 5 6 6 6 4 3 6 6 6 6 6 6 10
POP 12HR 80 80 90 80 80
RAIN L D D C D D L L D D L L C
RAIN SHWRS SC O SC NM SC SC SC NM O
TSTMS SC SC SC IS IS IS IS SC SC
MIX HGT 2 <1 <1 <1 <1 <1 1 2 1 <1 <1 1 1 1 2 2 2 1
T WIND DIR SE E E E NE E SE SW NE E NE NE NE NE NE NE NE NE
T WIND SPD 6 4 9 9 4 4 4 2 1 10 11 10 8 12 10 12 14 11
DISPERSION VP VP VP VP VP VP VP VP PR VP VP VP
ADI 19 2 4 4 2 4 7 5 2 5 5 5 4 19 18 25 29 8
MAX LVORI 3 6 6 7 9 9 8 6 7 7 7 7 9 5 5 5 4 8
STABILITY C F F F F C C C C F F F F D D D D E
CEILING 3700 500 600 1800 1400 600 700 1000 700
STA PRES 28.12 28.17 28.20 28.18 28.24 28.24 28.29 28.29
Date 09/24Fri 09/25/26Sat 09/26/26Sun 09/27/26Mon 09/28/26
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 65 51 72 48 73 49 75 50 75
TEMP 62 59 54 52 70 64 53 49 70 63 53 51 72 64 54 52 73 65
DEWPT 62 59 54 52 56 56 49 46 51 52 48 47 53 54 50 49 59 61
RH 100100100100 61 75 86 89 51 67 83 86 51 70 86 89 62 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC FW FW FW FW FW FW FW SC SC SC SC SC FW SC
POP 12HR 30 0 5 0 0 0 0 0 5
RAIN C
$$
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