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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Tue Apr 7 2026
NCZ005-080800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
231 AM EDT Tue Apr 7 2026
Date 04/06/26 Tue 04/07/26 Wed 04/08/26 Thu
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 43 65 34 60 35
TEMP 46 46 55 61 63 55 47 42 39 38 49 55 58 51 46 42 39 40
DEWPT 35 32 32 27 24 23 21 20 19 19 22 20 20 24 26 29 30 31
MIN/MAX RH 66 22 55 23 81
RH 65 58 41 27 22 29 35 41 44 46 34 25 23 34 45 60 70 70
WIND DIR NW N N N N NE NE NE NE NE NE NE E E E E NE NE
WIND SPD 3 4 9 9 8 4 8 6 8 8 10 9 9 4 3 3 3 4
CLOUDS B1 B1 SC SC FW FW FW CL CL CL FW FW FW SC SC SC SC SC
CLOUDS(%) 66 60 50 40 25 11 6 5 4 5 10 15 19 33 31 47 42 49
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 4 6 6 <1 <1 <1 <1 2 3 4 4 <1 <1 <1 <1 <1
T WIND DIR W N N N N NE NE NE NE E NE NE E E E E NE NE
T WIND SPD 3 6 13 11 10 11 6 12 11 17 12 11 11 10 9 8 8 8
DISPERSION VP VP PR PR PR VP VP VP VP
ADI 2 7 61 72 72 5 5 6 8 34 45 52 54 5 4 4 4 8
MAX LVORI 3 3 1 1 1 2 2 2 2 1 1 1 1 2 2 3 3 3
STABILITY F A B B B F E F E B B B B F G F F A
CEILING 29700 None None None None None None None None
STA PRES 29.43 29.55 29.54 29.64 29.74 29.81 29.74 29.78 29.76
Date 04/09Fri 04/10/26Sat 04/11/26Sun 04/12/26Mon 04/13/26
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 66 40 75 49 82 53 82 58 84
TEMP 62 59 45 44 72 67 53 52 80 73 60 55 79 75 63 59 81 77
DEWPT 36 38 39 40 41 40 41 42 46 48 49 50 51 49 52 55 53 51
RH 38 45 79 86 33 37 64 69 30 41 67 83 38 40 67 87 38 40
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW CL FW FW FW FW FW FW FW FW FW SC SC
POP 12HR 5 5 5 0 5 0 0 0 0
$$
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