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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Mon Apr 27 2026
VAZ018-280800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
431 PM EDT Mon Apr 27 2026
Date 04/27/26 Tue 04/28/26 Wed 04/29/26 Thu
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 46 67 55 69 47
TEMP 68 59 53 50 48 48 54 60 66 63 58 56 56 57 62 65 67 61 57 52 48 47
DEWPT 38 39 39 40 41 43 47 51 53 53 52 52 51 53 58 60 58 55 49 45 41 39
MIN/MAX RH 83 62 87 73 79
RH 33 47 59 68 77 83 77 72 63 70 80 86 83 86 87 84 73 81 75 77 77 74
WIND DIR SE SE SE SE SE S S S S SE S SW S SE S S W W NW NW NW NW
WIND SPD 6 6 5 5 4 4 4 4 3 2 1 1 1 2 3 5 6 8 8 8 9 10
WIND GUST 17 17 17 16 14 14 14 14 18 20 26 27 26 28 32
CLOUDS FW SC SC SC B1 B2 B2 B2 B2 B1 B1 B1 B2 OV OV OV OV B1 B1 SC B1 SC
CLOUDS(%) 15 40 34 44 57 87 86 87 70 54 60 64 76 96 96100100 65 65 50 55 34
VSBY 10 10 10 10 10 10 3 5 10 6 5 2 5 10 3 3 6 10
POP 12HR 40 70 50 100 50
RAIN SHWRS NM SC IS IS SC IS SC SC O O O O SC SC IS IS
TSTMS IS IS SC SC
MIX HGT 3 <1 <1 <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 <1 2 3 <1
T WIND DIR SE SE SE SE S S S S S SE E NW E S S SW W W
T WIND SPD 11 12 13 12 12 11 8 6 4 3 2 2 2 6 8 12 32 29
DISPERSION PR PR PR VP VP VP VP VP PR PR PR PR
ADI 47 8 6 8 6 13 13 17 14 2 1 1 1 7 9 23 78 27
MAX LVORI 1 2 2 3 3 4 4 3 2 3 5 5 5 5 4 4 3 3
STABILITY B E F E F B B C B F F F F B B D D D
CEILING None 6400 100 500 700 600 500 2300 2000
STA PRES 27.93 27.90 27.87 27.81 27.78 27.70 27.60 27.48
Date 04/30Fri 05/01/26Sat 05/02/26Sun 05/03/26Mon 05/04/26
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 64 42 66 44 58 38 65 43 72
TEMP 61 54 44 46 63 57 48 45 56 51 42 42 61 57 47 48 69 63
DEWPT 34 31 32 35 35 35 35 37 36 31 28 29 32 33 34 38 40 39
RH 36 41 62 65 35 43 60 73 47 46 57 60 33 40 60 68 35 41
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC B1 B1 B1 B1 B1 SC FW FW SC FW FW FW SC
POP 12HR 10 5 30 40 40 20 10 5 20
RAIN SHWRS SC SC SC SC SC IS IS
TSTMS 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