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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu May 7 2026
NCZ006-080800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
131 AM EDT Thu May 7 2026
Date 05/06/26 Thu 05/07/26 Fri 05/08/26 Sat
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 55 63 44 71 50
TEMP 66 63 59 60 59 62 59 51 49 45 48 62 68 71 65 55 52 50 54
DEWPT 64 63 59 59 54 52 52 49 45 41 43 43 42 43 46 45 45 46 51
MIN/MAX RH 100 69 92 35 92
RH 93100100 96 83 70 78 93 86 86 83 50 39 36 50 69 77 86 90
WIND DIR SW W NW N NE NE N N NW NW N N SW S S S S S SW
WIND SPD 3 2 1 3 5 4 0 0 2 1 0 0 3 5 2 2 2 3 4
CLOUDS OV OV OV OV OV B2 SC FW FW FW SC CL FW FW FW FW SC SC B1
CLOUDS(%) 93 91 92 92 90 72 48 16 22 23 32 4 6 9 20 19 35 42 55
VSBY 6 6 3 3 4 10 9 10 8 10 10 10 10 10 10
POP 12HR 100 90 0 0 0
RAIN SHWRS NM O O NM SC IS
TSTMS IS IS
MIX HGT <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 4 5 6 <1
T WIND DIR SW SW W N NE NE N NW NW NW SW NE SW SW S
T WIND SPD 16 6 5 11 14 9 3 2 4 2 1 2 5 11 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 7 6 7 21 31 20 2 1 2 1 1 11 39 82 3
MAX LVORI 6 8 8 5 4 3 4 7 6 6 5 2 1 1 2
STABILITY F D B C C C F G G G A A A A G
CEILING 400 400 1600 None None None None None
STA PRES 29.19 29.22 29.22 29.30 29.36 29.42 29.32
Date 05/09Sun 05/10/26Mon 05/11/26Tue 05/12/26Wed 05/13/26
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 78 54 81 58 75 45 73 51 80
TEMP 75 72 58 58 78 74 64 60 72 67 50 49 70 66 55 55 77 73
DEWPT 55 56 54 56 59 61 61 59 54 47 43 43 43 47 46 49 53 54
RH 50 57 86 93 52 64 90 96 53 49 77 80 38 50 72 80 43 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW SC B1 B1 B2 B2 B1 B1 FW FW FW FW SC SC B1 SC
POP 12HR 5 5 40 60 40 10 5 10 20
RAIN SHWRS IS SC NM SC SC 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