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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Mar 21 2026
VAZ018-220800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Sat Mar 21 2026
Date 03/21/26 Sun 03/22/26 Mon 03/23/26 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 84 57 60 34
TEMP 59 58 56 57 71 82 83 75 70 66 63 58 57 59 57 51 45 40 36 35
DEWPT 42 44 48 51 57 54 51 50 52 53 54 50 45 37 31 28 27 27 26 25
MIN/MAX RH 83 32 74 36 68
RH 53 59 74 80 61 38 33 41 53 63 72 75 64 44 37 41 49 59 67 66
WIND DIR W W W W W W W W W W W NW NW NW NW NW NW N N NE
WIND SPD 4 6 8 9 10 8 10 10 11 13 11 10 11 12 11 10 8 3 2 2
WIND GUST 21 21 24 24 28 32 34 34 32 28 27 25 18 13
CLOUDS CL FW FW SC FW FW SC FW FW B1 B2 B2 SC FW FW FW FW SC SC SC
CLOUDS(%) 0 17 13 26 20 23 31 10 6 51 84 82 39 11 7 18 17 38 48 50
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 9 9 9 9
POP 12HR 5 5 30 10 0
RAIN SHWRS IS SC
TSTMS IS
MIX HGT <1 <1 <1 <1 2 5 6 <1 <1 <1 2 2 3 3 4 3
T WIND DIR W W W W W W W W W W W N NW NW NW N
T WIND SPD 3 3 5 6 14 19 23 8 9 10 13 20 16 17 19 18
DISPERSION VP PR PR FR FR FR FR FR PR VP VP
ADI 2 2 3 7 31111151 5 6 9 15 37 47 57 75 12
MAX LVORI 2 3 4 4 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY G G G B B B B E E D D D C C C E
CEILING None None None None None 7000 None None None
STA PRES 27.67 27.63 27.64 27.56 27.56 27.54 27.72 27.86
Date 03/24Wed 03/25/26Thu 03/26/26Fri 03/27/26Sat 03/28/26
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 58 39 64 45 69 52 68 38 57
TEMP 54 49 41 41 62 56 48 47 67 64 58 54 63 56 44 39 54 49
DEWPT 24 25 26 29 37 38 39 42 49 49 49 47 43 36 33 31 31 28
RH 31 39 55 62 39 51 71 83 52 58 72 77 48 47 65 73 41 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW B1 B1 B1 B2 SC SC B1 B1 B1 B2 B1 B1 B1 B1 B1 SC
POP 12HR 0 5 10 20 30 40 40 40 30
RAIN SHWRS IS IS SC SC SC SC SC SC 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