
A frigid cold airmass will bring significantly colder weather across the eastern two thirds of the country early this week. Record low temperatures are expected in the Southeast by Tuesday morning. Moderate to heavy lake effect snow will continue downwind of the Great Lakes through Monday. Several inches of snow accumulation is expected, including in portions of the Chicago Metro Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EST Sun Nov 9 2025
NCZ003-100900-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
831 PM EST Sun Nov 9 2025
Date 11/09/25 Mon 11/10/25 Tue 11/11/25 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
EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX TEMP 36 41 23 45 28
TEMP 47 42 39 36 38 40 37 29 28 27 25 24 35 42 44 37 31 30 32 34
DEWPT 35 31 28 24 22 18 16 16 16 14 12 12 14 14 17 18 17 17 18 20
MIN/MAX RH 64 40 61 30 60
RH 63 65 64 61 52 41 42 58 60 57 57 60 41 31 33 46 56 58 56 56
WIND DIR NW NW NW NW NW NW NW NW NW NW NW W W W W SW SW W W W
WIND SPD 11 11 10 8 10 10 11 9 10 10 10 10 10 9 6 2 2 2 3 5
WIND GUST 25 24 24 20 21 23 25 25 26 24 23 13
CLOUDS B1 FW FW FW FW SC SC SC B1 FW FW FW FW FW FW FW FW FW FW FW
CLOUDS(%) 56 20 14 14 15 37 31 31 55 20 13 11 7 9 8 14 19 17 17 13
VSBY 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 5 10 0 0
MIX HGT 2 1 1 1 4 6 5 2 2 3 1 1 4 5 4 <1
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW W W SW SW
T WIND SPD 26 32 26 19 24 19 24 26 35 37 31 26 20 16 17 11
DISPERSION FR FR FR PR FR FR FR VP VP VP VP
ADI 30 22 18 29 93 85 99 18 48 25 21 38 75 65 81 5
MAX LVORI 3 3 3 3 1 1 1 2 1 2 2 1 1 1 1 2
STABILITY D E E B C C C E D E E C C C B G
CEILING None None None None None None None None
STA PRES 27.97 28.03 28.05 28.11 28.19 28.23 28.18
Date 11/12Thu 11/13/25Fri 11/14/25Sat 11/15/25Sun 11/16/25
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN TEMP 59 37 60 35 66 41 66 43 64
TEMP 58 47 42 38 59 46 39 36 63 53 44 44 66 54 47 44 62 56
DEWPT 33 37 36 32 31 33 30 28 35 38 38 38 46 46 44 43 49 48
RH 39 68 79 79 34 60 70 72 35 57 79 79 48 74 89 96 62 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC B1 SC SC FW FW FW SC SC SC SC SC B1 B1
POP 12HR 0 0 0 0 0 5 0 5 20
RAIN S S
$$
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