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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Mon Mar 23 2026
VAZ012-232000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 AM EDT Mon Mar 23 2026
Date Mon 03/23/26 Tue 03/24/26 Wed 03/25/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 59 28 55 32 64
TEMP 54 51 50 44 38 32 29 29 43 51 55 47 39 35 32 34 52 62 64 56
DEWPT 46 37 29 25 22 22 20 17 16 17 18 20 19 20 22 22 26 30 32 33
MAX/MIN RH 43 68 23 65 28
RH 74 59 44 47 52 66 69 60 33 26 23 34 44 54 66 61 36 30 30 42
WIND DIR NW NW NW NW NW N N NE E SE SE SE SE SE S S S S S S
WIND SPD 12 12 13 11 10 5 2 1 2 2 2 2 2 2 2 2 2 3 3 2
CLOUDS B2 B2 SC FW SC B1 B2 B1 SC SC SC SC SC B1 B1 SC SC SC SC SC
CLOUDS(%) 82 70 26 14 40 58 83 63 46 50 45 49 42 52 52 45 30 27 49 46
VSBY 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 0 0 5 5
RAIN SHWRS
TSTMS
MIX HGT 2 3 3 2 2 1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 4 5 <1
T WIND DIR NW NW NW NW N N NE E E SE S SE SE S SE SE S S S S
T WIND SPD 23 23 20 20 17 16 10 4 6 8 10 8 5 4 3 5 6 6 6 4
DISPERSION FR FR PR VP VP VP VP VP VP
ADI 44 53 87 9 8 7 5 4 16 29 41 4 3 2 2 6 14 35 40 2
MAX LVORI 3 1 1 2 3 3 3 3 2 2 1 2 2 3 3 3 2 1 1 2
STABILITY D D B F F F F A B B B F F F F B B B B F
CEILING 700 None None 10300 None None None None None None
STA PRES 27.18 27.30 27.40 27.46 27.49 27.44 27.46 27.44 27.43 27.35
Date Thu 03/26/26Fri 03/27/26Sat 03/28/26Sun 03/29/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 42 71 54 67 30 51 26 56
TEMP 45 46 70 66 59 57 63 54 38 31 49 42 30 28 54 47
DEWPT 37 40 49 49 50 50 48 39 29 21 14 12 18 19 21 23
RH 73 79 47 54 72 77 58 57 70 66 24 29 60 68 27 38
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW B1 B2 B2 B1 B1 SC FW FW FW FW FW
POP 12HR 5 20 20 70 50 10 5 5
RAIN S S
RAIN SHWRS IS NM NM SC SC
SNOWSHWRS 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