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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Thu May 7 2026
NCZ006-080800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
401 PM EDT Thu May 7 2026
Date 05/07/26 Fri 05/08/26 Sat 05/09/26 Sun
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 42 72 50 77 54
TEMP 60 58 51 49 44 47 63 69 71 65 54 52 50 54 68 74 77 72 62 58 54 58
DEWPT 55 54 51 47 40 43 42 42 43 46 45 45 46 51 58 57 56 58 57 56 54 57
MIN/MAX RH 100 36 91 49 100
RH 84 86100 93 86 86 46 37 36 50 71 77 86 90 70 55 48 61 84 93100 96
WIND DIR NE N N NW NW N N S SW S S S S S SW SW SW SW SW SW N N
WIND SPD 5 0 0 2 2 1 0 2 5 2 2 2 3 4 8 9 8 2 2 1 0 0
WIND GUST 19
CLOUDS B1 B1 FW SC FW FW CL CL CL FW SC SC FW B2 B1 SC SC SC SC SC SC SC
CLOUDS(%) 67 58 15 32 23 22 4 5 4 11 27 31 25 84 56 43 30 35 26 34 43 50
VSBY 5 10 9 8 10 10 10 10 10 10 10 10 10 10 10 10 10 10 9 5
POP 12HR 0 0 5 10 0
RAIN SHWRS IS
MIX HGT 2 <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 1 3 6 6 <1
T WIND DIR N NE NW W NW W E SW SW S S S S S SW SW W W
T WIND SPD 14 4 2 3 2 1 3 8 10 5 5 5 6 13 16 18 20 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 34 2 1 2 1 1 16 57 73 3 3 3 3 23 54117143 3
MAX LVORI 3 5 7 6 5 5 2 1 1 2 3 4 6 4 3 1 1 3
STABILITY C F G G G A A A A G G G G C C B B G
CEILING None None None None None None 2100 None None
STA PRES 29.31 29.37 29.41 29.32 29.31 29.25 29.22 29.15
Date 05/10Mon 05/11/26Tue 05/12/26Wed 05/13/26Thu 05/14/26
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 82 56 72 44 72 50 76 51 77
TEMP 80 74 62 58 67 65 48 48 69 65 53 53 73 69 57 55 74 70
DEWPT 57 60 58 56 53 48 43 43 41 45 43 48 52 54 52 52 53 53
RH 45 62 87 93 61 54 83 83 36 48 69 83 48 59 83 90 48 55
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B2 B1 SC FW CL FW SC SC B1 B1 B1 SC SC FW
POP 12HR 10 40 50 5 0 10 40 30 10
RAIN SHWRS IS SC SC SC IS SC SC IS
TSTMS 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