Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Mon May 4 2026
VAZ046-050800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
231 AM EDT Mon May 4 2026
Date 05/03/26 Mon 05/04/26 Tue 05/05/26 Wed
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 43 76 54 81 61
TEMP 43 46 64 71 75 69 63 59 57 60 71 77 80 76 69 66 63 61
DEWPT 32 35 38 40 42 44 45 45 45 48 48 45 45 49 50 53 54 55
MIN/MAX RH 67 30 73 29 79
RH 65 65 38 32 31 40 52 60 64 64 44 32 29 39 51 63 72 81
WIND DIR S SW SW SW SW S S SW SW SW SW S S S S S S S
WIND SPD 4 4 9 11 11 6 6 9 9 9 11 16 19 13 11 12 12 13
WIND GUST 21 21 27 29 25 25 25 26 26
CLOUDS SC SC SC SC SC FW FW FW SC FW FW SC SC SC B1 B1 B2 B2
CLOUDS(%) 34 40 42 28 40 19 12 20 49 13 7 30 43 46 61 63 71 84
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 20 5 0 30
RAIN SHWRS SC SC NM
MIX HGT <1 <1 4 6 5 <1 <1 <1 <1 1 3 7 8 <1
T WIND DIR SW SW W SW SW S S SW S SW SW SW S S
T WIND SPD 3 4 14 18 17 6 8 9 8 16 24 26 29 11
DISPERSION VP PR PR PR PR FR FR FR FR
ADI 2 4 66129 74 3 5 6 5 21 98123147 10
MAX LVORI 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY F A B B C F E E E B B C C D
CEILING None None None None None None None 4900
STA PRES 29.32 29.30 29.22 29.22 29.25 29.26 29.17
Date 05/06Thu 05/07/26Fri 05/08/26Sat 05/09/26Sun 05/10/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 78 57 67 43 69 47 72 48 76
TEMP 73 74 64 58 63 61 49 48 66 62 51 51 70 66 55 53 73 69
DEWPT 61 60 59 58 55 48 43 41 39 41 41 44 47 48 47 48 49 50
RH 66 62 84100 75 62 80 77 37 46 68 77 44 52 74 83 43 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 OV OV B2 B1 SC SC FW FW FW SC B1 FW FW FW SC
POP 12HR 70 80 90 30 10 10 30 10 20
RAIN SHWRS NM NM NM O O O SC IS IS SC IS
TSTMS IS SC IS IS 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