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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri May 1 2026
VAZ012-020800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 PM EDT Fri May 1 2026
Date 05/01/26 Sat 05/02/26 Sun 05/03/26 Mon
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 38 59 32 62 39
TEMP 47 43 39 40 51 56 57 48 41 37 34 38 51 59 61 53 44 41 41 47
DEWPT 38 36 32 31 28 27 27 27 27 27 28 29 27 27 28 30 31 31 32 35
MIN/MAX RH 79 31 78 27 69
RH 71 76 76 70 41 32 31 44 57 67 78 70 39 29 28 41 60 67 70 63
WIND DIR NW NW N N N N NW NW NW NW NW NW NW W W W SW SW SW SW
WIND SPD 4 4 3 3 5 6 6 5 3 2 2 3 5 5 4 3 3 3 4 4
CLOUDS B2 B2 B2 B2 B2 SC SC FW FW FW FW FW CL CL CL FW FW FW SC SC
CLOUDS(%) 84 80 86 86 85 43 31 18 12 10 22 14 5 5 5 9 16 23 34 39
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 10 0 0 10
MIX HGT 1 1 <1 1 3 6 7 1 <1 <1 <1 2 4 5 6 <1
T WIND DIR NW NW N N N N NW NW NW NW W NW NW W W SW
T WIND SPD 13 14 3 14 16 20 23 20 6 5 5 13 14 13 14 8
DISPERSION VP VP VP PR VP VP VP VP VP VP VP
ADI 9 10 6 28 49135147 7 5 3 3 42 88 98111 4
MAX LVORI 3 3 4 3 1 1 1 2 3 3 3 1 1 1 1 2
STABILITY E E F B B A B F F G G A A A A G
CEILING 2400 1100 7300 None None None None None None
STA PRES 27.13 27.14 27.14 27.11 27.19 27.24 27.28 27.23
Date 05/04Tue 05/05/26Wed 05/06/26Thu 05/07/26Fri 05/08/26
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 72 46 77 52 72 50 66 40 64
TEMP 69 64 51 50 76 68 56 54 69 65 57 54 63 55 44 42 62 55
DEWPT 43 44 44 44 39 42 44 47 52 52 52 51 47 40 38 37 36 35
RH 39 48 77 80 26 39 64 77 55 63 83 90 56 57 79 82 38 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW SC B1 B1 B2 B2 B2 B2 B2 B1 SC SC SC SC
POP 12HR 20 5 10 40 60 80 60 20 10
RAIN SHWRS IS SC SC NM NM O NM SC IS IS
TSTMS IS 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