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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
402 AM EDT Tue Mar 31 2026
VAZ024-312000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
402 AM EDT Tue Mar 31 2026
Date Tue 03/31/26 Wed 04/01/26 Thu 04/02/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 82 60 85 60 84
TEMP 56 56 70 80 81 74 69 65 63 62 75 82 84 77 69 65 62 60 73 82 84 76
DEWPT 49 50 52 53 52 54 56 56 56 56 58 58 58 59 59 59 58 58 61 60 58 57
MAX/MIN RH 36 81 41 94 42
RH 77 80 53 39 37 50 63 73 78 81 55 44 41 54 70 81 87 93 66 47 41 52
WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW S S S S S S S
WIND SPD 4 2 5 9 8 4 4 3 2 2 5 6 5 2 2 1 1 1 3 6 8 4
WIND GUST 16 19 20 17 16 16 17 18 14
CLOUDS FW SC SC B1 SC SC FW SC FW SC SC B2 B2 B1 B1 SC SC SC SC B1 B1 SC
CLOUDS(%) 12 29 47 55 38 35 16 28 22 33 37 71 71 58 52 35 30 43 35 55 55 30
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 7 9 10 8 8 8 10 8 8
POP 12HR 10 5 60 30 30
RAIN SHWRS NM NM SC SC SC SC
TSTMS SC SC IS
MIX HGT <1 <1 3 7 6 1 1 <1 <1 <1 4 6 3 <1 <1 <1 <1 <1 3 6 6 2
T WIND DIR SW SW SW SW SW SW SW SW SW SW W W SW S S S SE E SW S S S
T WIND SPD 5 3 13 18 23 10 9 8 6 6 17 12 12 6 5 3 2 1 11 16 19 11
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 4 57 86160 5 4 4 3 7 78 41 29 3 3 2 1 1 40 53 63 5
MAX LVORI 4 4 1 1 1 2 3 3 4 4 1 1 2 2 3 5 7 7 3 1 1 2
STABILITY F B B C B F F G G B B D D F F G G A B D D F
CEILING None None None None None 5100 None None None None
STA PRES 28.67 28.58 28.58 28.60 28.65 28.62 28.68 28.70 28.76 28.72
Date Fri 04/03/26Sat 04/04/26Sun 04/05/26Mon 04/06/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 59 82 58 85 60 78 46 64
TEMP 64 59 79 75 64 60 83 76 65 62 77 71 57 48 62 57
DEWPT 56 57 58 55 57 57 58 57 56 56 56 51 46 42 38 35
RH 75 93 49 50 78 90 43 52 73 81 48 49 67 80 41 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B1 B1 SC SC B1 SC SC B1 B1 B1 B1 SC B1
POP 12HR 10 30 10 40 20 50 40 30
RAIN SHWRS SC IS SC IS IS SC SC SC SC SC SC
TSTMS SC 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