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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Thu Mar 19 2026
VAZ018-200800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Thu Mar 19 2026
Date 03/19/26 Fri 03/20/26 Sat 03/21/26 Sun
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 40 69 53 73 51
TEMP 45 42 41 41 58 67 68 60 58 56 54 53 62 71 72 64 57 55 53 52
DEWPT 34 34 34 34 40 41 42 42 44 48 49 48 51 48 45 45 46 46 46 47
MIN/MAX RH 77 38 84 38 86
RH 65 73 76 76 51 39 39 51 59 74 83 83 67 44 38 50 67 72 77 83
WIND DIR NW W W W SW SW SW W W W W W W W W W W W W W
WIND SPD 4 4 5 4 6 9 11 8 9 9 4 3 4 5 4 2 2 2 2 2
WIND GUST 18 23 24 19 20 19 19 16 17 17 16 12
CLOUDS CL CL SC FW SC B2 B2 B1 B1 B1 B1 B2 B2 B1 SC FW FW SC SC SC
CLOUDS(%) 5 4 28 17 30 77 71 59 59 61 67 70 73 61 47 14 13 36 40 30
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 30 40 5 0
RAIN SHWRS SC SC
MIX HGT <1 <1 <1 <1 2 6 5 <1 <1 <1 <1 <1 2 4 6 <1
T WIND DIR W W W W SW W SW SW SW W NW NW NW W W S
T WIND SPD 3 3 3 3 18 20 23 10 11 14 9 11 6 4 6 1
DISPERSION VP VP PR PR PR PR VP VP VP VP VP
ADI 2 2 2 4 48 90 92 7 8 10 6 9 14 17 43 1
MAX LVORI 3 3 4 4 1 1 1 2 3 3 4 4 3 2 1 2
STABILITY G G G B B C C E E E E C C C B G
CEILING None None None 10600 3500 500 7200 None None
STA PRES 27.91 27.87 27.84 27.70 27.62 27.61 27.69 27.65
Date 03/22Mon 03/23/26Tue 03/24/26Wed 03/25/26Thu 03/26/26
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 81 56 64 33 57 38 59 41 69
TEMP 78 69 62 58 62 52 39 34 54 48 42 40 57 52 46 43 66 63
DEWPT 50 49 50 50 38 26 25 23 23 25 28 30 36 35 35 36 44 44
RH 37 49 65 75 41 36 57 64 30 40 57 67 45 52 65 76 45 50
WIND SPD <15 <15 15> <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 SC FW FW FW FW SC B1 B1 B1 B1 B1 B1 SC SC
POP 12HR 0 30 20 10 5 20 20 10 10
RAIN SHWRS 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