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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Sun Apr 26 2026
VAZ024-262000-
RAWS 441631
37.63N 79.51W Elev. 865 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 44 73 43 69
TEMP 55 53 59 66 68 62 54 50 46 47 61 70 73 65 54 48 43 46 59 63 69 65
DEWPT 54 52 51 50 48 45 44 43 42 41 41 41 40 41 42 41 41 40 45 48 50 51
MAX/MIN RH 48 89 31 89 52
RH 96 96 75 56 49 54 69 77 86 79 48 35 30 41 64 77 93 79 60 58 51 60
WIND DIR NE NE NE NE NE NE NE NE N NE E E SE E E SE SE S S S S S
WIND SPD 2 3 6 8 8 4 3 2 2 2 3 5 4 2 2 2 1 1 2 5 4 2
WIND GUST 18
CLOUDS B2 B2 B2 B1 SC SC SC B1 SC FW FW FW FW FW FW SC SC B2 B2 B2 B1 B1
CLOUDS(%) 85 86 81 52 33 39 48 52 32 23 9 15 13 11 18 33 34 84 84 85 66 52
VSBY 0 3 10 10 10 10 10 9 6 10 10 8 9 10 10 10 10 10 8 8 9 8
POP 12HR 10 0 0 10 80
RAIN SHWRS IS O O SC SC IS
TSTMS IS
Obvis PF
MIX HGT 1 2 3 4 4 1 1 1 <1 1 4 4 4 <1 <1 <1 <1 1 3 2 2 <1
T WIND DIR NE NE NE NE NE NE NE NE E E E E SE SE SE SE SE S SW S S S
T WIND SPD 10 13 16 14 12 11 9 6 11 10 10 8 8 4 4 4 4 10 14 8 6 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 5 29 50 56 63 5 4 3 5 18 49 45 42 2 2 2 2 19 50 22 19 3
MAX LVORI 9 4 3 1 1 2 3 4 5 3 1 1 1 2 3 4 6 3 1 2 2 3
STABILITY F B C C B F F F G A A A A G G G G A B C C F
CEILING 1700 None None None None None None None 11400 600
STA PRES 28.51 28.56 28.63 28.68 28.74 28.69 28.71 28.70 28.66 28.57
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 52 74 48 68 39 68 41 66
TEMP 54 54 70 67 54 49 67 61 46 44 65 61 46 44 63 60
DEWPT 50 52 59 55 45 40 37 34 33 32 33 34 35 34 36 34
RH 86 93 68 65 71 71 33 36 60 62 30 36 65 68 36 37
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 OV OV SC FW FW SC FW FW FW SC B1 B1 B1 SC
POP 12HR 40 90 20 10 10 20 30 30
RAIN SHWRS IS SC O O IS IS SC SC SC IS
TSTMS IS 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