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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 AM EDT Sat Mar 21 2026
VAZ018-220800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
1201 AM EDT Sat Mar 21 2026
Date 03/20/26 Sat 03/21/26 Sun 03/22/26 Mon
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 55 73 52 82 52
TEMP 57 56 55 63 71 73 65 58 55 53 54 69 79 82 71 65 61 58 52
DEWPT 48 51 50 51 46 44 44 44 46 48 49 55 54 50 49 50 50 50 49
MIN/MAX RH 84 35 86 33 88
RH 72 83 83 65 41 35 46 59 72 83 83 61 42 33 46 58 67 75 89
WIND DIR W NW NW NW W W NW W W W W W W W SW W W W NW
WIND SPD 6 5 3 3 2 3 2 1 2 2 2 4 6 6 8 10 11 14 16
WIND GUST 25 21 17 14 13 18 20 23 21 24 27 31 32
CLOUDS B1 B2 B1 B1 B1 SC FW FW FW SC SC SC SC SC FW SC B1 B1 B2
CLOUDS(%) 53 76 64 68 65 33 25 9 16 39 39 34 43 35 22 40 58 69 80
VSBY 10 10 10 10 10 10 10 10 9 9 10 10 10 10 10 10 7 7
POP 12HR 40 5 10 5 30
RAIN SHWRS SC SC IS
TSTMS
MIX HGT <1 <1 <1 2 4 5 <1 <1 <1 <1 <1 2 5 6 <1
T WIND DIR W W NW NW NW W W W W W W W W W SW
T WIND SPD 10 8 5 10 8 8 4 3 3 3 5 10 14 18 6
DISPERSION PR PR VP VP VP VP PR FR FR GD
ADI 7 5 4 26 39 49 2 2 2 2 6 25 80120 5
MAX LVORI 3 4 5 2 1 1 2 3 3 5 4 2 1 1 2
STABILITY E E C C B B G G G G B B B B E
CEILING 2100 1100 None None None None None None
STA PRES 27.62 27.68 27.67 27.70 27.67 27.67 27.57
Date 03/23Tue 03/24/26Wed 03/25/26Thu 03/26/26Fri 03/27/26
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 64 35 57 39 58 39 70 49 64
TEMP 61 54 42 36 55 50 42 41 56 50 42 42 65 62 58 51 61 52
DEWPT 38 28 25 24 22 24 27 29 34 31 31 33 40 41 44 42 41 33
RH 42 36 50 61 27 36 55 62 43 48 65 70 40 46 59 71 48 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 FW CL SC SC B1 B1 SC SC SC SC SC SC SC SC B1 B1 B1
POP 12HR 20 5 0 10 20 20 10 40 50
RAIN SHWRS IS IS IS IS IS SC SC 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