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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sat May 2 2026
VAZ018-030800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
231 AM EDT Sat May 2 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 41 59 35 64 44
TEMP 42 43 52 56 58 51 44 40 38 42 53 60 63 56 47 45 44 48
DEWPT 33 32 29 28 28 26 27 30 30 30 29 28 28 29 29 30 31 36
MIN/MAX RH 71 31 77 27 64
RH 70 65 41 34 32 37 51 67 73 62 39 29 26 35 49 55 60 63
WIND DIR NW NW NW NW NW NW NW NW NW NW NW W W W W W W W
WIND SPD 6 4 5 8 10 8 4 4 4 4 6 6 6 2 2 2 3 3
WIND GUST 12 12 13 16
CLOUDS OV B2 OV SC FW FW FW CL FW CL CL CL CL FW SC FW SC SC
CLOUDS(%) 93 73 91 48 19 14 9 5 6 4 3 3 2 9 28 22 38 43
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 0 0 5
MIX HGT <1 1 3 6 6 1 <1 <1 <1 2 5 6 6 <1
T WIND DIR NW NW N NW NW NW NW NW NW NW NW W W W
T WIND SPD 16 12 12 17 18 18 4 3 3 16 16 16 16 3
DISPERSION PR PR VP VP VP VP VP VP VP
ADI 12 29 48102130 9 6 3 3 69 99103103 5
MAX LVORI 3 3 1 1 1 2 2 3 3 1 1 1 1 2
STABILITY E C B A B F F G G A B B B G
CEILING 9700 8300 None None None None None None
STA PRES 27.67 27.70 27.64 27.73 27.78 27.81 27.75
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 75 53 81 59 78 60 72 44 65
TEMP 72 66 56 57 78 72 62 60 73 70 62 62 68 59 48 46 62 57
DEWPT 46 46 45 46 44 43 45 50 55 54 54 56 56 44 38 36 36 36
RH 39 48 66 67 30 35 54 69 53 57 75 81 65 57 68 68 38 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 15> <15
AVG CLOUDS SC SC SC SC SC SC SC SC B2 B2 B2 B2 B2 B1 B1 SC SC SC
POP 12HR 20 10 5 30 50 80 80 30 20
RAIN SHWRS IS SC SC SC SC O O SC SC IS IS
TSTMS IS IS IS IS 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