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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri May 15 2026
VAZ046-160800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Fri May 15 2026
Date 05/15/26 Sat 05/16/26 Sun 05/17/26 Mon
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 51 84 61 90 63
TEMP 59 55 52 56 72 82 84 78 70 67 63 64 81 88 89 82 72 67 63 67
DEWPT 44 43 43 46 50 52 54 56 53 53 53 55 60 60 59 63 61 61 61 62
MIN/MAX RH 74 36 74 36 91
RH 57 64 71 69 46 35 36 47 55 61 70 73 49 39 37 53 68 81 93 84
WIND DIR S S SW SW SW SW SW SW SW SW SW SW SW SW S SE S SW SW SW
WIND SPD 2 2 2 3 8 10 10 6 8 8 6 5 5 4 4 3 3 3 3 3
WIND GUST 17 19 19 17
CLOUDS SC FW FW FW FW FW SC B1 B1 SC B1 SC FW FW FW FW FW FW FW FW
CLOUDS(%) 35 16 8 7 8 7 32 68 60 50 59 47 22 12 13 15 6 8 9 6
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 5 5
MIX HGT <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 6 8 <1
T WIND DIR S S S SW SW SW SW S SW SW SW SW NW SW SW S
T WIND SPD 3 3 2 4 10 16 17 6 6 6 5 4 4 3 6 3
DISPERSION VP VP VP PR PR PR PR VP VP VP VP
ADI 2 2 1 4 34 92104 5 6 6 4 4 19 27 62 2
MAX LVORI 3 3 3 3 1 1 1 2 3 3 3 3 2 2 1 2
STABILITY G G G A B B B E D D E A A A A G
CEILING None None None None None 15100 None None None
STA PRES 29.37 29.40 29.42 29.34 29.35 29.37 29.44 29.41
Date 05/18Tue 05/19/26Wed 05/20/26Thu 05/21/26Fri 05/22/26
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 92 64 91 67 89 63 75 56 75
TEMP 90 86 71 68 89 85 73 70 88 81 69 65 74 69 60 59 72 70
DEWPT 62 62 60 61 60 58 59 61 62 63 63 60 59 58 56 53 56 57
RH 39 45 68 78 38 40 62 73 42 54 81 84 59 68 87 80 57 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL CL CL FW FW FW FW B1 B1 B1 B1 B2 B1 B1 B1 B1
POP 12HR 0 0 0 0 30 40 60 40 40
RAIN SHWRS SC SC SC SC NM SC SC SC SC
TSTMS SC IS 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