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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 AM EST Sat Dec 27 2025
NCZ006-280900-
RAWS 310801
36.37N 79.29W Elev. 580 ft
1231 AM EST Sat Dec 27 2025
Date 12/26/25 Sat 12/27/25 Sun 12/28/25 Mon
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 44 68 36 58 48
TEMP 45 47 50 56 63 67 53 46 42 38 37 43 52 57 52 49 54 57 58
DEWPT 42 46 47 50 48 45 43 40 37 35 35 38 40 42 45 49 53 55 55
MIN/MAX RH 98 45 93 56 100
RH 89 96 89 80 58 45 69 79 82 89 92 82 63 57 77100 96 93 90
WIND DIR SW W W N N NE E E E NE E S S S S SW SW SW SW
WIND SPD 4 5 4 5 5 4 3 2 2 1 1 2 3 5 3 5 6 10 11
WIND GUST 17 21 21
CLOUDS SC SC SC FW SC SC SC FW SC B2 OV OV OV OV OV OV B2 OV OV
CLOUDS(%) 35 27 30 25 29 32 26 17 33 77 90 91 88 88 91 91 83 96 90
VSBY 10 9 8 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 5 20
RAIN SHWRS IS IS SC
MIX HGT <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 1 1 1 1
T WIND DIR SW W W NW N N NE E E E E SE S S S
T WIND SPD 9 6 4 3 11 8 9 11 8 8 6 4 4 6 9
DISPERSION VP PR VP VP VP VP VP PR PR FR
ADI 4 3 4 9 36 23 4 5 4 4 5 6 8 11 4
MAX LVORI 6 9 8 4 1 2 3 4 5 6 6 4 3 2 4
STABILITY F F C C C C G G G F C C C D F
CEILING None None None None 1700 1000 1100 1400
STA PRES 29.24 29.34 29.39 29.52 29.56 29.59 29.51
Date 12/29Tue 12/30/25Wed 12/31/25Thu 01/01/26Fri 01/02/26
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 68 27 42 25 49 27 48 17 39
TEMP 65 47 32 27 40 35 28 27 48 41 33 28 44 36 23 18 37 30
DEWPT 48 26 14 11 10 7 8 8 14 17 17 13 10 3 -3 -7 -4 0
RH 54 43 47 50 28 30 42 44 25 37 51 53 24 24 31 32 17 27
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 FW FW FW FW FW FW FW SC SC SC SC SC SC FW FW FW
POP 12HR 50 5 0 0 0 0 0 5 5
RAIN C
RAIN SHWRS 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