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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EST Sat Nov 22 2025
NCZ003-230900-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
431 PM EST Sat Nov 22 2025
Date 11/22/25 Sun 11/23/25 Mon 11/24/25 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
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 43 66 36 61 40
TEMP 59 53 51 46 43 57 65 63 51 45 41 39 36 53 60 59 49 44 42 41 43
DEWPT 52 51 48 45 42 43 40 42 41 39 37 34 31 34 29 32 33 32 34 35 36
MIN/MAX RH 97 40 86 30 77
RH 78 93 89 96 96 59 40 46 68 79 85 82 82 48 31 36 54 62 73 79 76
WIND DIR NW NW NW NW W NW NW NW NW NW NW NW NW SE S S S N N S S
WIND SPD 2 2 1 1 2 5 9 8 2 2 1 2 1 1 4 3 1 0 0 1 1
CLOUDS FW FW FW FW FW FW FW CL FW CL CL FW FW FW FW SC SC B1 B2 B2 B2
CLOUDS(%) 20 18 23 18 9 8 7 5 7 3 4 7 11 13 25 34 49 56 71 87 81
VSBY 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 0 5
RAIN C
MIX HGT <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 1 3 3 <1
T WIND DIR NW N N NW NW NW NW NW NW NW NW NW NW N S S SE
T WIND SPD 10 6 6 4 6 10 17 18 13 10 9 9 6 2 8 8 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 5 3 3 2 7 24 63 65 6 5 4 4 7 4 26 26 2
MAX LVORI 4 6 6 8 6 2 1 1 3 4 5 5 4 2 2 2 2
STABILITY G G G G B C C C G G G G B B C B F
CEILING None None None None None None None None 29700
STA PRES 28.11 28.13 28.17 28.17 28.24 28.30 28.37 28.34
Date 11/25Wed 11/26/25Thu 11/27/25Fri 11/28/25Sat 11/29/25
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 58 50 67 32 48 27 47 25 50
TEMP 54 56 54 54 66 53 40 33 47 38 31 27 44 37 29 26 49 37
DEWPT 48 52 54 53 50 41 30 24 17 17 17 15 14 17 18 17 21 23
RH 80 86100 96 56 64 67 69 30 42 56 60 29 44 63 68 33 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV OV OV OV B1 B1 SC FW FW FW FW SC SC SC FW SC SC SC
POP 12HR 70 70 30 5 0 5 5 5 10
RAIN C L L L 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