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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri May 1 2026
VAZ046-020800-
RAWS 441101
37.39N 78.80W Elev. 804 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 48 62 38 66 43
TEMP 57 53 50 49 55 60 61 56 49 44 40 45 56 62 65 58 50 46 45 49
DEWPT 44 42 39 37 36 34 33 35 32 31 31 32 31 31 32 34 34 34 34 37
MIN/MAX RH 68 35 69 28 67
RH 62 66 66 63 49 37 35 45 52 60 70 60 38 31 29 40 54 63 65 63
WIND DIR SW NW N N N N N N NW NW NW NW NW W W W SW SW SW SW
WIND SPD 6 5 5 5 6 6 5 3 4 3 4 4 6 6 8 3 2 2 3 5
CLOUDS OV B2 B2 OV OV OV B1 B1 FW FW FW FW FW CL CL FW FW FW SC SC
CLOUDS(%) 88 76 87 90 93 91 62 51 24 8 11 7 6 3 2 6 11 23 27 33
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 30 5 0 0
RAIN SHWRS IS IS
MIX HGT <1 <1 <1 2 4 5 7 <1 <1 <1 <1 1 6 7 7 <1
T WIND DIR SW W N N N N N N NW NW NW NW NW W W W
T WIND SPD 16 11 14 16 11 12 14 2 17 3 4 11 13 14 16 12
DISPERSION PR PR PR VP VP VP VP VP VP VP VP
ADI 5 2 11 40 49 78 84 1 4 2 2 10 82 93115 2
MAX LVORI 3 3 2 1 1 1 1 2 2 3 3 2 1 1 1 2
STABILITY E E E C B B B F F G F A B B B G
CEILING 15200 5100 7400 12300 None None None None None
STA PRES 29.18 29.19 29.24 29.18 29.26 29.34 29.37 29.29
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 77 53 82 60 80 59 74 46 70
TEMP 72 71 59 57 79 76 66 62 75 74 64 59 70 66 52 50 68 64
DEWPT 45 46 46 48 48 46 51 54 56 55 56 57 57 45 42 42 39 39
RH 38 41 62 72 34 34 58 75 52 51 75 93 63 47 69 74 34 40
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW SC FW SC B1 SC B1 B1 B2 B2 B2 B1 SC FW FW SC
POP 12HR 10 5 5 20 50 60 60 20 10
RAIN SHWRS IS SC SC SC NM NM SC IS
TSTMS 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