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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri May 8 2026
NCZ005-090800-
RAWS 310540
36.38N 79.70W Elev. 858 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 50 77 54 83 57
TEMP 70 64 54 52 50 54 66 74 76 71 61 58 55 58 75 81 82 76 65 62 58 61
DEWPT 39 43 43 43 45 50 57 56 56 58 57 56 54 56 58 53 52 56 57 58 58 58
MIN/MAX RH 86 49 100 35 99
RH 32 46 66 71 83 86 73 53 50 63 87 93 96 93 55 38 35 50 75 87100 90
WIND DIR S S S S S SW SW SW SW SW SW W W W W SW SW S S SW SW NW
WIND SPD 6 4 3 4 4 4 9 10 9 3 3 2 2 2 2 4 6 3 3 2 3 5
CLOUDS CL SC SC SC SC SC B1 SC SC SC SC B1 B2 SC FW FW FW SC SC B1 B2 B2
CLOUDS(%) 2 39 29 41 37 49 64 41 29 47 47 56 75 35 21 23 23 32 30 55 70 85
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 6
POP 12HR 0 10 20 0 30
RAIN SHWRS IS IS IS SC SC O
TSTMS IS IS
MIX HGT 7 <1 <1 <1 <1 <1 4 5 5 <1 <1 <1 <1 <1 4 8 8 <1
T WIND DIR SW S S S S S SW SW SW SW SW W W W SW SW SW SW
T WIND SPD 10 4 3 3 5 13 18 16 18 4 3 2 2 1 4 8 11 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 75 2 2 2 3 16 64100109 2 2 1 1 1 22 72 98 3
MAX LVORI 1 2 3 3 5 4 3 1 1 3 5 7 8 7 2 1 1 2
STABILITY B F G E F A C B B F F F F A A A B G
CEILING None None None None None None None None None
STA PRES 29.22 29.19 29.19 29.12 29.19 29.24 29.26 29.19
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 70 44 69 48 74 50 74 49 77
TEMP 67 61 48 48 66 63 51 53 71 67 55 54 71 67 53 54 74 70
DEWPT 56 53 45 41 38 41 41 45 51 54 51 50 49 47 45 47 48 49
RH 68 75 89 77 36 44 68 74 49 63 86 86 46 49 74 77 40 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 FW CL FW FW SC B1 B1 B1 FW FW FW FW FW SC SC
POP 12HR 80 20 0 5 50 40 10 0 5
RAIN SHWRS O NM IS SC SC SC
TSTMS IS SC
$$
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