Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Thu Apr 23 2026
VAZ018-232000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 PM 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 81 57 82 60 77
TEMP 79 80 70 63 59 57 59 76 81 80 71 64 61 60 61 73 76 73 65
DEWPT 44 42 44 44 43 43 46 49 46 46 47 47 46 48 51 56 57 56 52
MAX/MIN RH 26 62 29 70 52
RH 29 26 39 50 55 59 62 39 29 30 42 54 58 64 70 55 52 55 63
WIND DIR NW NW NW NW W W W W W W W W W W W W W W W
WIND SPD 6 5 2 2 2 2 2 3 4 4 2 2 2 2 2 4 6 5 3
WIND GUST 20 19 12 14 14 12 12 13 17 18 16 14
CLOUDS CL FW FW CL FW FW FW FW SC FW FW FW SC SC B2 B2 OV OV B1
CLOUDS(%) 5 12 10 4 9 18 19 17 31 24 22 22 38 43 74 74 88 88 63
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 10 30 80
RAIN SHWRS IS IS SC NM NM O SC
TSTMS SC
MIX HGT 8 8 <1 <1 <1 <1 <1 7 9 7 <1 <1 <1 <1 <1 3 3 3 <1
T WIND DIR NW W W W W W W W W W W W W W W NW NW NW NW
T WIND SPD 16 13 5 3 4 4 3 11 10 10 8 2 3 4 4 19 17 13 13
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 130128 3 2 2 2 3 97105 82 4 1 2 2 5 68 60 61 6
MAX LVORI 1 1 2 2 2 3 3 1 1 1 2 2 3 3 3 1 1 1 3
STABILITY B A G G G G A A A A G G G F B C C A F
CEILING None None None None None None None 1500 14800
STA PRES 27.74 27.73 27.71 27.69 27.62 27.63 27.60 27.63 27.63
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 51 73 46 71 51 71 55 75
TEMP 55 53 70 63 49 48 68 63 53 52 65 64 57 57 73 66
DEWPT 49 46 48 45 41 41 44 42 43 45 53 52 50 50 47 44
RH 80 77 45 52 74 77 42 46 69 77 65 65 77 77 40 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC SC SC SC SC SC SC SC B2 B2 B1 B1 B1 B1 B1
POP 12HR 50 20 10 10 50 80 30 40
RAIN SHWRS SC IS IS IS IS SC O SC SC SC SC SC
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