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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Thu Apr 23 2026
NCZ006-232000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
301 AM EDT Thu Apr 23 2026
Date Thu 04/23/26 Fri 04/24/26 Sat 04/25/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 86 56 87 59 84
TEMP 53 55 77 84 86 79 68 63 58 60 80 86 85 77 68 64 60 63 78 83 81 72
DEWPT 47 48 48 46 46 47 47 49 48 50 51 47 46 47 49 50 51 53 57 56 58 58
MAX/MIN RH 25 77 25 73 40
RH 80 77 36 27 25 32 47 60 69 69 36 26 26 35 51 60 72 70 48 40 46 61
WIND DIR W W NW W W W SW W W W W W W SW SW SW SW SW W W NW W
WIND SPD 2 2 3 5 4 2 1 1 1 2 2 4 5 2 2 2 2 2 4 6 5 2
CLOUDS FW CL CL FW FW SC SC FW FW FW SC SC SC SC FW FW SC SC SC B2 B2 B2
CLOUDS(%) 7 4 3 9 14 31 29 13 11 16 27 31 32 32 20 18 26 43 43 76 76 72
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 10 5 60
RAIN SHWRS IS IS NM NM SC
TSTMS IS SC
MIX HGT <1 <1 5 10 10 <1 <1 <1 <1 <1 5 10 7 <1 <1 <1 <1 <1 5 7 3 <1
T WIND DIR W W NW W W W SW W W W NW W W W SW SW SW SW W W NW W
T WIND SPD 3 3 13 11 11 3 3 3 3 2 9 9 11 5 3 4 4 4 13 16 19 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 3 90127125 2 2 2 2 2 62 99 98 3 2 2 2 4 88 78 82 3
MAX LVORI 5 4 1 1 1 2 2 3 3 3 1 1 1 2 2 3 3 3 1 1 1 3
STABILITY G A A A A G G G G A A A A G G G G A A C B F
CEILING None None None None None None None None None 7700
STA PRES 29.39 29.30 29.29 29.26 29.26 29.17 29.18 29.17 29.16 29.15
Date Sun 04/26/26Mon 04/27/26Tue 04/28/26Wed 04/29/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 54 77 49 75 56 75 54 80
TEMP 59 57 73 70 55 51 72 69 59 58 72 71 61 57 78 74
DEWPT 56 54 52 48 48 47 48 50 52 56 60 59 55 54 52 50
RH 90 90 48 45 77 86 42 51 78 93 66 66 81 90 40 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC SC SC SC SC SC B1 B2 B2 B2 SC SC B1 SC
POP 12HR 50 20 10 20 50 70 20 20
RAIN SHWRS SC SC IS IS IS IS SC NM SC IS IS IS IS
TSTMS 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