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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Sun Apr 26 2026
NCZ003-262000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
331 AM EDT Sun Apr 26 2026
Date Sun 04/26/26 Mon 04/27/26 Tue 04/28/26
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 69 46 71 46 67
TEMP 56 56 61 66 69 63 55 51 48 48 59 68 71 65 56 50 47 49 56 63 67 65
DEWPT 56 56 55 53 51 48 47 45 44 42 42 41 42 42 43 44 43 43 48 51 53 53
MAX/MIN RH 54 85 35 86 61
RH 100100 81 63 53 58 74 80 86 80 53 37 35 43 62 80 86 80 74 65 61 65
WIND DIR N N NE NE NE NE NE NE NE NE NE E E E E E E SE S SW SW S
WIND SPD 3 5 9 10 10 10 11 9 8 6 6 5 5 5 5 5 4 2 5 6 5 5
CLOUDS B2 B1 B2 SC FW FW FW SC B1 SC FW FW FW FW FW SC SC B2 B2 B2 B2 B1
CLOUDS(%) 73 59 72 33 20 9 23 39 59 33 8 14 17 14 18 31 42 80 87 86 71 55
VSBY 1 3 9 10 10 10 10 9 7 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 0 0 10 70
RAIN SHWRS NM NM SC SC IS
MIX HGT <1 <1 2 3 3 <1 <1 <1 <1 2 3 4 4 <1 <1 <1 <1 1 2 3 4 <1
T WIND DIR NW N NE NE NE NE NE NE NE NE NE E E E E S SE S SW SW SW SW
T WIND SPD 2 8 16 14 16 13 14 13 14 14 11 8 8 4 4 12 10 8 11 9 10 8
DISPERSION VP FR FR PR PR PR PR PR VP PR
ADI 1 6 41 56 68 9 10 9 13 42 45 40 42 2 2 6 7 11 28 30 36 5
MAX LVORI 10 8 3 1 1 2 3 4 4 3 1 1 1 2 3 4 5 4 3 3 1 3
STABILITY F C C B B E E E D B B A A F F F E B B C C E
CEILING 700 None None None None None None None 5100 600
STA PRES 28.92 28.98 29.07 29.12 29.18 29.12 29.16 29.15 29.14 29.04
Date Wed 04/29/26Thu 04/30/26Fri 05/01/26Sat 05/02/26
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 72 50 68 42 68 43 65
TEMP 55 56 68 68 56 52 65 61 47 45 64 61 49 46 61 59
DEWPT 54 55 61 56 48 43 38 35 36 34 36 37 39 38 38 36
RH 96 96 78 65 74 71 37 38 65 65 35 41 68 73 42 42
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 OV OV SC SC FW FW FW FW SC SC B1 B1 B1 SC
POP 12HR 40 90 20 10 10 30 40 30
RAIN SHWRS IS SC O O IS IS IS SC SC SC SC IS
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