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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Thu Mar 19 2026
VAZ024-200800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
501 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 37 72 50 77 49
TEMP 56 47 42 38 37 57 69 71 65 59 55 52 51 65 74 76 68 59 55 52 50
DEWPT 37 36 35 35 34 40 41 43 44 45 46 48 47 52 49 47 47 47 47 46 46
MIN/MAX RH 90 35 89 35 87
RH 49 65 76 89 89 53 36 36 46 60 72 86 86 63 41 36 47 64 74 80 86
WIND DIR SW NW NW W W SW SW SW SW SW W W W NW W W SW W NW NW W
WIND SPD 1 1 1 1 1 2 6 6 4 3 2 2 2 2 3 3 2 1 1 1 1
WIND GUST 18 18 16
CLOUDS FW CL CL FW SC SC B1 B2 B1 B1 B1 B1 B1 B1 B1 SC FW FW SC SC SC
CLOUDS(%) 11 3 4 12 27 29 56 73 69 55 56 61 65 64 56 47 24 13 42 46 31
VSBY 10 10 10 10 8 10 10 10 6 10 10 10 10 10 10 10 10
POP 12HR 0 30 30 5 0
RAIN SHWRS SC SC
MIX HGT <1 <1 <1 <1 <1 2 5 6 1 <1 <1 <1 <1 3 5 6 <1
T WIND DIR S SW NW NW NW SW SW SW S SW SW W NW NW W W S
T WIND SPD 3 1 2 3 2 6 20 23 12 11 11 8 9 4 4 5 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 1 2 2 17124101 8 5 5 4 10 15 26 39 2
MAX LVORI 2 4 4 6 6 2 1 1 2 3 3 5 5 2 2 1 2
STABILITY G G G G A B B C E F F F B B B B G
CEILING None None None 12000 None 2300 14400 None None
STA PRES 28.64 28.61 28.57 28.41 28.33 28.31 28.40 28.36
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 83 56 69 34 59 37 61 41 70
TEMP 79 72 61 58 66 58 41 35 56 51 43 39 59 56 47 43 65 65
DEWPT 53 52 52 50 38 29 26 23 23 27 29 31 36 36 35 36 45 45
RH 41 49 72 75 36 33 55 61 27 39 57 73 42 47 63 76 48 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 SC FW FW FW FW B1 B1 B1 B1 B1 B1 B1 B1 SC
POP 12HR 0 20 10 10 5 10 10 10 10
RAIN SHWRS 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