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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Wed Sep 23 2026
NCZ003-240800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
131 AM EDT Wed Sep 23 2026
Date 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri
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 59 63 54 60 46
TEMP 63 61 60 61 62 61 59 57 56 56 55 57 59 59 59 53 51 48 47
DEWPT 61 60 59 59 60 59 58 56 55 54 53 55 55 55 55 52 49 47 47
MIN/MAX RH 96 93 96 84 100
RH 93 97 96 93 93 93 96 96 96 93 93 93 87 87 87 96 93 96100
WIND DIR E NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE N N N
WIND SPD 4 4 4 5 6 5 5 4 3 4 4 5 5 5 2 1 1 3 4
CLOUDS OV OV OV OV OV OV OV B2 OV OV B2 OV B2 B2 B1 SC SC FW FW
CLOUDS(%) 93 93 91 95 95 95 91 87 95 94 82 91 80 75 53 33 26 18 12
VSBY 6 6 5 5 4 3 4 3 4 6 10 10 10 10 10
POP 12HR 60 70 80 40 0
RAIN C C L L C L L D D C C C
RAIN SHWRS
TSTMS
MIX HGT <1 1 1 2 2 1 1 1 1 1 1 2 2 2 <1
T WIND DIR NE NE NE NE NE NE NE NE NE NE N N N N NE
T WIND SPD 10 10 10 10 10 11 12 13 14 13 12 12 12 12 13
DISPERSION VP VP PR VP VP VP VP VP VP VP
ADI 5 7 14 18 18 18 8 9 7 9 17 22 26 25 6
MAX LVORI 9 8 5 5 5 5 8 8 8 8 5 5 4 4 5
STABILITY F E D D D D E E F E D D D D F
CEILING 900 700 1400 1000 700 700 3300 None
STA PRES 28.27 28.33 28.31 28.31 28.27 28.29 28.28
Date 09/25Sat 09/26/26Sun 09/27/26Mon 09/28/26Tue 09/29/26
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 72 46 75 49 74 51 76 52 77
TEMP 70 62 51 48 72 64 53 51 72 64 54 52 74 66 56 53 75 68
DEWPT 49 49 44 43 48 50 46 45 52 53 49 48 56 59 53 52 62 63
RH 47 62 77 83 42 60 77 80 49 67 83 86 53 78 90 96 64 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW SC SC SC SC SC SC FW FW SC
POP 12HR 0 0 0 0 0 0 0 0 5
$$
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