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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 AM EDT Fri May 1 2026
VAZ018-020800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
1201 AM EDT Fri May 1 2026
Date 04/30/26 Fri 05/01/26 Sat 05/02/26 Sun
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 40 68 45 61 38
TEMP 44 41 44 56 64 67 57 51 47 45 46 54 58 60 52 45 41 38 41
DEWPT 34 33 34 33 32 32 35 37 37 37 36 37 35 33 31 30 30 29 29
MIN/MAX RH 73 27 72 37 70
RH 68 73 68 42 30 27 43 59 68 73 68 52 42 36 44 55 65 70 62
WIND DIR NW NW NW S SW W NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 4 2 1 4 8 11 5 3 2 2 2 3 4 5 6 5 5 5 6
WIND GUST 18 19 16 12 12 12 13 17 20 21 19 19 23
CLOUDS B1 B2 B2 FW FW SC B1 B2 B2 B2 B2 B2 B2 B2 SC SC FW FW FW
CLOUDS(%) 56 71 70 25 13 39 55 78 72 83 84 84 86 72 39 35 20 21 14
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 20 40 20
RAIN SHWRS IS IS SC SC SC SC IS IS
MIX HGT <1 <1 <1 3 7 8 1 1 <1 <1 1 4 6 6 1
T WIND DIR NW W W S SW W NW NW NW NW NW NW NW NW NW
T WIND SPD 3 3 1 5 11 14 17 17 14 14 10 14 10 14 23
DISPERSION VP VP PR VP VP VP PR PR PR PR
ADI 2 2 1 24100123 12 8 7 7 18 69 46 67 10
MAX LVORI 3 3 3 2 1 1 2 3 3 3 3 1 1 1 2
STABILITY F F A A A B E F F F B B C C F
CEILING 15200 None None 6900 5100 1800 3800 None
STA PRES 27.74 27.73 27.65 27.72 27.75 27.73 27.67
Date 05/03Mon 05/04/26Tue 05/05/26Wed 05/06/26Thu 05/07/26
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 62 41 74 52 79 56 75 56 70
TEMP 59 54 43 46 71 65 55 55 77 69 60 59 71 66 59 57 67 59
DEWPT 28 29 29 34 40 43 42 45 45 45 46 51 55 53 51 50 47 39
RH 30 38 57 63 32 45 61 69 32 42 60 75 57 63 75 77 49 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL FW SC FW FW SC SC B1 B1 B2 B2 B2 B2 B1 B1
POP 12HR 5 5 10 10 10 30 60 60 50
RAIN SHWRS IS SC SC NM NM NM SC SC
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
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