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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri May 8 2026
VAZ046-090800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
401 PM EDT Fri May 8 2026
Date 05/08/26 Sat 05/09/26 Sun 05/10/26 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 49 77 53 83 53
TEMP 71 65 56 52 49 53 67 74 76 71 62 57 54 58 76 82 83 76 67 63 58 55
DEWPT 38 41 40 41 42 45 53 54 53 55 54 53 52 53 54 51 50 54 55 56 55 54
MIN/MAX RH 74 45 93 32 98
RH 30 41 55 66 77 74 61 50 45 57 75 86 93 83 46 34 32 46 65 78 90 96
WIND DIR SW S S S SW SW SW SW SW SW SW W W W W SW SW S S SW NE NE
WIND SPD 8 6 6 5 5 8 11 11 9 3 4 3 3 3 4 6 8 4 4 3 5 10
WIND GUST 18 17 16 21 19 16 20
CLOUDS CL FW FW SC FW SC B1 SC SC SC FW FW SC SC FW FW FW SC SC B1 B2 OV
CLOUDS(%) 2 7 9 49 13 48 54 33 32 37 20 19 32 28 6 13 13 43 45 63 74 92
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 4 2
POP 12HR 0 20 10 0 50
RAIN SHWRS IS IS SC SC O
TSTMS IS
MIX HGT 7 <1 <1 <1 <1 1 4 7 6 <1 <1 <1 <1 <1 5 8 8 <1
T WIND DIR SW S S S S SW SW SW SW W W W SW W W SW SW SW
T WIND SPD 13 5 4 5 5 14 20 19 20 9 4 3 3 2 8 9 12 5
DISPERSION PR PR PR PR VP VP VP VP VP VP VP PR
ADI 108 3 2 4 3 23 56 92130 4 2 2 2 2 49 75107 4
MAX LVORI 1 2 2 3 3 3 1 1 1 3 4 6 7 5 1 1 1 2
STABILITY B F F E F B D C B G F G G A A B B E
CEILING None None None None None None None None None
STA PRES 29.24 29.21 29.20 29.12 29.20 29.26 29.28 29.21
Date 05/11Tue 05/12/26Wed 05/13/26Thu 05/14/26Fri 05/15/26
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 64 42 68 46 72 50 72 49 76
TEMP 62 59 47 46 65 62 50 51 68 65 55 53 69 65 53 53 73 69
DEWPT 52 49 43 39 36 40 39 42 51 53 51 50 48 48 46 47 48 49
RH 70 69 86 76 34 44 66 71 54 65 86 89 47 54 77 80 41 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B1 FW CL FW FW SC B1 B2 B1 SC SC SC SC SC SC SC
POP 12HR 90 10 0 5 60 40 20 5 5
RAIN SHWRS O SC SC NM SC IS IS
TSTMS IS SC 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