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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 AM EDT Thu Apr 16 2026
VAZ046-162000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1031 AM EDT Thu Apr 16 2026
Date Thu 04/16/26 Fri 04/17/26 Sat 04/18/26
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 90 64 85 58 89
TEMP 81 88 89 81 75 71 66 67 77 83 85 78 69 63 59 62 78 87 89 82
DEWPT 53 53 49 51 52 56 57 57 56 54 51 51 51 52 53 54 55 53 53 54
MAX/MIN RH 26 76 32 81 29
RH 38 30 25 35 45 59 73 70 48 37 31 39 53 67 80 75 45 31 29 38
WIND DIR W SW SW SW W W W W NW W NW NW NW N N N S SW SW S
WIND SPD 9 13 14 6 6 5 5 5 5 5 5 3 2 2 2 2 5 8 8 6
WIND GUST 17
CLOUDS SC FW FW FW FW B1 SC B1 SC FW FW FW FW FW FW SC FW SC SC B1
CLOUDS(%) 43 15 9 13 17 51 43 58 38 17 10 13 15 13 18 30 21 27 44 57
VSBY 10 10 10 10 10 7 7 7 7 10 10 10 10 10 10 10 10 10 10 7
POP 12HR 0 30 20 5 10
RAIN SHWRS IS IS IS IS SC
MIX HGT 3 7 8 <1 <1 <1 <1 <1 4 7 8 <1 <1 <1 <1 <1 3 8 9 <1
T WIND DIR W SW SW SW SW NW W W NW NW NW W W NE NE NE SW SW SW S
T WIND SPD 16 18 23 13 6 16 6 12 17 11 12 2 2 3 2 2 8 13 16 6
DISPERSION PR PR PR PR VP VP VP VP PR
ADI 68 82 97 6 3 11 5 13 91102117 1 1 2 1 2 36112144 5
MAX LVORI 1 1 1 2 2 2 3 3 1 1 1 2 2 3 4 4 1 1 1 2
STABILITY B C C F F E E B A A A G G G G A A B B E
CEILING None None None None None None None None None
STA PRES 29.19 29.19 29.23 29.26 29.23 29.26 29.28 29.26 29.17
Date Sun 04/19/26Mon 04/20/26Tue 04/21/26Wed 04/22/26
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 67 39 62 35 70 49 80
TEMP 71 57 65 58 46 43 60 56 41 40 66 64 56 53 76 72
DEWPT 56 51 42 30 29 25 21 20 23 24 28 31 33 38 44 42
RH 59 80 43 34 51 49 22 24 48 52 24 29 42 57 32 34
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 B1 FW FW CL FW CL CL CL FW FW SC SC SC
POP 12HR 40 50 10 5 0 0 5 10
RAIN SHWRS SC SC SC 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