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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Sat May 23 2026
VAZ012-240800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
301 PM EDT Sat May 23 2026
Date 05/23/26 Sun 05/24/26 Mon 05/25/26 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
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 56 77 55 79 57
TEMP 66 63 58 58 56 58 69 76 75 69 63 60 58 60 70 74 77 71 64 61 58 61
DEWPT 60 59 58 58 56 57 62 63 64 64 62 59 58 60 65 64 65 65 63 61 58 61
MIN/MAX RH 100 62 100 66 100
RH 81 87100100100 96 78 64 69 84 97 96100100 84 71 67 81 97100100100
WIND DIR SE SE SE SE SE SE S S S S N S N N W SW N N N N N N
WIND SPD 3 3 2 1 1 1 1 2 1 1 0 1 0 0 1 1 0 0 0 0 0 0
CLOUDS OV OV OV B2 B2 B2 SC B2 B2 OV B2 B2 B2 B1 B1 OV OV B2 B2 B2 B2 B2
CLOUDS(%) 88 93 91 86 85 81 31 78 84 91 83 72 78 69 65 91 91 84 82 79 85 80
VSBY 8 6 3 2 2 5 9 10 10 10 2 0 1 4 9 9 10 4
POP 12HR 50 80 50 90 60
RAIN SHWRS SC SC SC IS IS NM O IS SC IS IS SC SC O O NM NM SC SC NM
TSTMS SC IS SC SC IS IS SC SC IS
MIX HGT 1 <1 <1 <1 <1 <1 2 4 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR SE SE SE SE S S SW SW S S SW SW W W W NW W N
T WIND SPD 6 6 6 4 4 4 6 8 6 9 8 5 4 5 13 10 4 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 11 3 3 2 2 5 21 36 14 4 4 3 2 6 35 34 12 1
MAX LVORI 5 8 6 8 6 7 3 3 3 5 8 8 8 8 4 3 3 5
STABILITY B F F F F B A B B F F F F B B B B F
CEILING 200 200 200 2600 500 200 700 2300 2600
STA PRES 27.38 27.39 27.39 27.34 27.35 27.36 27.40 27.38
Date 05/26Wed 05/27/26Thu 05/28/26Fri 05/29/26Sat 05/30/26
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 80 57 77 57 77 55 74 50 69
TEMP 75 68 62 61 75 71 63 61 76 71 61 59 72 68 57 54 67 64
DEWPT 66 65 62 61 64 64 60 61 62 62 58 58 58 57 53 51 52 51
RH 74 90100100 69 79 90100 62 73 90 96 61 68 86 90 59 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV B1 B1 B2 OV B1 B1 B2 B2 B1 B1 B1 B2 B1 B1 B1 B2
POP 12HR 100 50 90 40 70 30 60 40 50
RAIN SHWRS NM O SC NM O SC IS SC NM SC SC SC NM SC SC SC SC
TSTMS IS NM IS IS SC IS IS SC IS 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