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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Tue Apr 28 2026
VAZ018-282000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 AM EDT Tue Apr 28 2026
Date Tue 04/28/26 Wed 04/29/26 Thu 04/30/26
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 69 56 71 48 63
TEMP 56 63 68 64 59 58 56 57 63 67 70 63 56 51 48 49 56 60 62 55
DEWPT 51 54 56 55 53 52 52 54 58 59 59 54 49 45 42 41 41 36 34 32
MAX/MIN RH 63 92 70 79 34
RH 83 72 65 73 80 80 86 90 84 75 68 72 77 80 80 74 57 41 35 41
WIND DIR S SW SW NW W W SW E SE S W W NW NW NW NW NW NW NW NW
WIND SPD 4 4 3 2 1 1 1 2 3 5 6 8 8 8 8 10 10 10 10 6
WIND GUST 16 14 16 19 26 27 25 26 31 31 27 26 23
CLOUDS B2 OV B1 B1 B1 B2 B2 OV OV OV OV B1 B1 B1 B1 B1 SC SC FW FW
CLOUDS(%) 85 90 62 51 55 75 85 96 96100100 61 61 55 63 51 34 30 20 13
VSBY 6 10 10 9 7 2 2 5 5 5 8 10 10 10 10 10 10 10 10 10
POP 12HR 80 60 100 40 10
RAIN SHWRS IS IS O O O O SC SC
TSTMS IS IS IS IS SC SC
MIX HGT 1 2 3 <1 <1 <1 <1 <1 <1 2 2 1 <1 1 <1 2 5 6 6 1
T WIND DIR S S W S S S W SE SE SE S W NW NW NW NW NW NW NW NW
T WIND SPD 11 12 10 4 2 2 1 3 6 10 6 39 26 21 25 25 23 17 20 19
DISPERSION VP VP VP VP PR PR PR PR PR
ADI 16 30 34 2 1 1 1 4 9 18 15 44 24 20 23 69131116136 9
MAX LVORI 4 3 3 3 5 5 6 6 4 3 3 3 3 3 3 3 1 1 1 2
STABILITY C C B F F F F B B D D D D D D C B B B F
CEILING 0 1600 14300 1900 600 400 1500 1200 None None
STA PRES 27.83 27.77 27.77 27.70 27.59 27.48 27.56 27.61 27.66 27.67
Date Fri 05/01/26Sat 05/02/26Sun 05/03/26Mon 05/04/26
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 42 67 45 58 37 63 42 71
TEMP 45 46 63 56 46 45 54 51 41 41 60 56 46 47 69 61
DEWPT 32 34 35 35 36 37 37 31 29 31 30 31 32 35 38 41
RH 60 63 35 45 68 73 52 46 62 67 32 38 58 63 32 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B1 B1 B1 B2 B1 FW FW FW FW FW FW FW SC
POP 12HR 5 20 40 40 10 5 5 20
RAIN SHWRS IS IS 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