Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
432 PM EDT Wed Mar 18 2026
VAZ018-190800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
432 PM EDT Wed Mar 18 2026
Date 03/18/26 Thu 03/19/26 Fri 03/20/26 Sat
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 31 58 38 66 50
TEMP 43 37 34 33 32 33 46 56 57 50 46 44 41 39 54 63 65 59 55 54 53 53
DEWPT 16 18 19 21 22 23 30 37 39 39 38 38 36 35 42 42 43 43 44 44 46 47
MIN/MAX RH 68 48 89 44 82
RH 33 46 54 61 66 66 53 49 51 66 73 79 82 85 64 46 45 55 66 69 77 80
WIND DIR S S SW SW SW SW SW W SW W NW NW W W SW SW SW SW SW W W W
WIND SPD 4 2 2 1 1 1 2 3 3 2 1 1 1 1 2 4 4 3 4 5 5 5
WIND GUST 14 13 12 14 13 12 16 17 14 18 20 20 21
CLOUDS SC SC SC B1 B1 B1 B1 B1 B2 B2 B1 FW SC SC B1 B1 B2 B2 B1 B1 B1 B1
CLOUDS(%) 34 41 43 60 67 59 65 68 82 75 53 24 36 48 62 63 82 75 65 65 58 55
VSBY 10 10 10 10 10 10 9 9 10 9 9 6 6 9 9 9 9 9
POP 12HR 0 5 10 10 20
RAIN SHWRS IS IS
MIX HGT 5 <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 2 5 6 <1
T WIND DIR S SE S S SW W W W NW W W W NW W SW SW SW S
T WIND SPD 9 10 6 3 2 3 18 13 12 4 5 5 4 3 2 16 19 10
DISPERSION VP VP VP VP VP VP VP VP VP VP PR PR
ADI 49 5 3 2 1 3 49 49 43 2 3 3 2 3 5 90 85 5
MAX LVORI 1 2 3 3 3 3 1 1 1 3 3 4 5 6 3 1 1 3
STABILITY B F F F F C C C C F F G G A B B C F
CEILING None 3500 1800 3500 None None 19900 15900 7200
STA PRES 27.94 27.90 27.90 27.88 27.91 27.89 27.85 27.71
Date 03/21Sun 03/22/26Mon 03/23/26Tue 03/24/26Wed 03/25/26
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 71 52 79 50 59 33 55 36 61
TEMP 68 62 54 53 77 70 58 51 56 49 38 34 51 48 40 39 59 55
DEWPT 48 46 46 48 50 49 49 41 33 27 23 22 26 27 28 30 36 34
RH 49 56 74 83 39 47 72 68 42 42 54 61 37 44 62 70 42 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC SC SC SC SC SC B1 B1 B1 SC B1 B1 B1 B1 B1 SC B1
POP 12HR 5 0 10 40 30 20 10 20 20
RAIN SHWRS SC SC SC IS IS IS IS
SNOWSHWRS 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