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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon Sep 14 2026
NCZ005-150800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
801 PM EDT Mon Sep 14 2026
Date 09/14/26 Tue 09/15/26 Wed 09/16/26 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 61 83 58 87 60
TEMP 73 71 66 62 73 82 83 74 67 62 59 60 76 85 87 77 68 63 60 61
DEWPT 65 59 57 54 55 56 58 58 58 57 56 57 59 59 58 58 57 57 56 57
MIN/MAX RH 77 41 94 39 89
RH 76 66 73 75 53 41 43 57 73 84 90 90 56 41 38 52 68 81 87 87
WIND DIR E E NE NE E E E E E E N N SE E E E SE N N S
WIND SPD 8 8 6 4 5 4 3 2 2 1 0 0 2 3 4 3 1 0 0 1
CLOUDS FW B1 SC SC SC SC SC SC FW SC SC FW FW FW CL CL CL CL CL CL
CLOUDS(%) 19 55 46 29 42 34 32 33 23 39 38 10 9 7 3 5 1 2 2 4
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 1 1 <1 <1 3 4 5 <1 <1 <1 <1 <1 3 4 5 <1
T WIND DIR E E E E E E E E E SE SE S SW SE E SE
T WIND SPD 20 17 14 11 6 4 3 8 6 5 4 8 3 1 1 2
DISPERSION PR PR PR VP VP VP VP VP VP VP VP
ADI 14 12 7 13 24 22 19 4 3 3 2 8 13 6 6 1
MAX LVORI 3 3 3 4 2 2 2 3 3 5 6 5 2 2 2 2
STABILITY E E F B B B B G G G G A B B B G
CEILING None None None None None None None None None
STA PRES 29.44 29.51 29.60 29.57 29.60 29.60 29.64 29.58
Date 09/17Fri 09/18/26Sat 09/19/26Sun 09/20/26Mon 09/21/26
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 89 63 94 66 92 68 93 68 86
TEMP 87 80 66 65 92 84 71 67 90 84 72 70 91 83 72 68 84 78
DEWPT 56 55 55 56 60 62 63 63 64 65 66 66 66 67 68 67 67 67
RH 35 42 68 73 34 48 76 87 42 53 81 87 44 59 87 97 57 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL CL CL FW FW SC FW FW SC FW FW SC SC SC SC B1
POP 12HR 0 0 5 5 5 10 20 20 50
RAIN SHWRS IS IS SC
TSTMS IS 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