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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed Aug 26 2026
NCZ006-270800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
231 AM EDT Wed Aug 26 2026
Date 08/25/26 Wed 08/26/26 Thu 08/27/26 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 58 88 69 88 68
TEMP 61 63 80 86 87 79 73 71 69 70 80 85 86 78 72 70 69 70
DEWPT 56 59 67 66 65 67 67 68 69 70 72 72 71 71 70 70 69 70
MIN/MAX RH 88 46 100 59 100
RH 84 87 65 51 48 67 81 90100100 77 65 61 79 93100100100
WIND DIR N N S S S SE S S S N S S S S S N N N
WIND SPD 0 0 2 4 4 1 2 2 1 0 3 4 4 2 1 0 0 0
CLOUDS FW FW SC SC B1 B1 SC B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B1
CLOUDS(%) 18 18 39 41 58 60 48 54 52 65 53 61 66 82 65 64 58 68
VSBY 10 9 10 10 10 10 10 9 8 7 10 7 7 7 7 7 7 10
POP 12HR 0 0 10 50 40
RAIN SHWRS IS IS SC SC SC SC IS
TSTMS SC SC SC IS
MIX HGT <1 <1 3 6 6 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1
T WIND DIR NE NE S S S S S SE S S SW S S S S SW SW SW
T WIND SPD 2 1 6 9 12 2 3 3 3 6 8 11 12 9 12 11 9 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 1 28 71 57 1 2 2 2 7 27 46 50 4 6 5 4 10
MAX LVORI 5 6 2 1 1 3 5 7 8 8 3 1 1 4 6 9 9 8
STABILITY G A A A C F F F F B B C C F F F F B
CEILING None None None None 4000 None 3300 13700 1800
STA PRES 29.45 29.45 29.38 29.38 29.38 29.39 29.33 29.35 29.37
Date 08/28Sat 08/29/26Sun 08/30/26Mon 08/31/26Tue 09/01/26
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 86 67 84 67 87 69 91 71 93
TEMP 85 75 69 69 82 76 69 69 84 80 71 71 89 83 74 73 91 85
DEWPT 72 72 69 69 72 72 69 69 72 72 70 70 71 71 70 70 70 71
RH 65 90100100 72 87100100 67 77 97 97 56 67 87 90 50 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 SC B1 SC SC SC FW FW FW FW FW SC
POP 12HR 70 60 40 20 20 5 5 0 5
RAIN SHWRS IS NM NM IS IS SC IS IS
TSTMS SC SC SC 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