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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Tue Apr 28 2026
VAZ018-290800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
431 PM EDT Tue Apr 28 2026
Date 04/28/26 Wed 04/29/26 Thu 04/30/26 Fri
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 57 72 48 63 42
TEMP 70 65 59 58 57 58 64 68 71 64 56 53 50 49 57 62 61 53 47 44 43 46
DEWPT 55 54 54 53 53 55 59 60 59 55 50 46 44 42 40 36 34 32 32 31 32 34
MIN/MAX RH 89 66 81 35 67
RH 59 68 83 83 86 90 84 76 66 73 80 77 80 77 53 38 36 44 56 60 65 63
WIND DIR W W NW W SW S S S W NW NW NW NW NW NW NW NW NW NW W W W
WIND SPD 4 2 1 1 1 2 3 5 6 8 8 6 8 10 10 10 9 6 4 3 3 4
WIND GUST 14 16 20 27 26 25 25 29 29 26 26 24 18 14 16 18
CLOUDS B1 B1 B1 B2 B2 B2 OV B2 B2 B1 B1 B1 B1 B1 SC SC FW FW SC SC SC SC
CLOUDS(%) 51 57 69 77 83 87 94 83 70 62 62 57 59 55 28 32 23 17 28 28 44 33
VSBY 10 10 9 2 1 2 5 5 5 6 4 10 10 10 10 9 9 9
POP 12HR 50 100 40 10 5
RAIN SHWRS IS O O NM NM SC SC
TSTMS IS IS IS SC SC
MIX HGT 3 <1 <1 <1 <1 <1 1 2 3 1 1 <1 <1 2 5 6 6 1
T WIND DIR SW SE SE S S SW S S SW W NW NW NW NW NW NW NW NW
T WIND SPD 5 4 2 2 2 3 11 13 16 17 19 19 19 17 18 18 21 23
DISPERSION VP VP VP VP PR PR PR PR PR VP VP VP
ADI 20 2 1 1 1 4 19 32 49 15 18 13 18 46102129150 10
MAX LVORI 2 3 5 5 5 6 4 3 1 3 3 4 3 3 1 1 1 2
STABILITY C F F F F B B C C D D E D C B B B F
CEILING 1500 600 500 1300 2000 1200 None None None
STA PRES 27.77 27.71 27.61 27.49 27.53 27.56 27.64 27.65
Date 05/01Sat 05/02/26Sun 05/03/26Mon 05/04/26Tue 05/05/26
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 67 44 59 36 62 40 66 46 71
TEMP 65 56 46 46 56 51 40 40 59 54 43 45 64 59 49 48 68 63
DEWPT 35 35 35 35 34 30 28 29 29 30 31 33 38 38 37 40 42 43
RH 33 45 65 65 43 44 62 64 32 40 62 62 38 45 63 74 39 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B2 B2 B1 SC FW FW FW FW FW FW SC SC SC SC B1
POP 12HR 20 30 30 10 5 10 20 20 30
RAIN SHWRS IS IS SC SC IS IS IS IS IS SC
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