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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Thu May 14 2026
VAZ046-142000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
631 AM EDT Thu May 14 2026
Date Thu 05/14/26 Fri 05/15/26 Sat 05/16/26
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 66 45 76 50 84
TEMP 52 61 64 64 60 52 48 45 50 65 72 75 69 58 53 50 55 73 81 83 78
DEWPT 49 44 41 40 40 39 40 40 40 40 42 42 45 43 44 43 45 49 52 55 57
MAX/MIN RH 41 82 30 77 36
RH 89 53 43 41 47 61 74 82 68 40 34 31 42 57 71 77 69 43 37 38 48
WIND DIR NW NW NW NW NW W W W W NW NW W W SW W W SW SW SW SW SW
WIND SPD 9 10 10 11 8 5 5 5 6 6 5 5 2 2 1 1 2 6 9 9 5
WIND GUST 18 16
CLOUDS FW B1 B1 SC SC FW CL CL CL CL FW SC B1 SC SC SC SC SC SC SC SC
CLOUDS(%) 11 51 63 40 29 8 5 3 2 2 22 46 51 27 32 37 40 31 35 40 47
VSBY 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 5
MIX HGT 2 5 6 6 <1 <1 <1 <1 <1 5 6 7 <1 <1 <1 <1 <1 3 4 3 <1
T WIND DIR NW NW NW NW NW NW W W NW NW NW W SW S NW W SW SW SW SW S
T WIND SPD 13 11 12 17 18 5 6 6 14 14 13 10 2 2 2 2 1 11 12 14 5
DISPERSION PR PR PR PR VP VP VP VP PR
ADI 28 49 57 79 12 3 3 3 19 88106 83 1 1 1 1 1 44 55 61 4
MAX LVORI 4 1 1 1 2 3 4 5 3 1 1 1 2 3 3 4 3 1 1 1 2
STABILITY B C C C E F F F B B A A F G G G A B B B E
CEILING None None None None None None None None None None
STA PRES 29.14 29.17 29.26 29.28 29.32 29.29 29.36 29.39 29.41 29.36
Date Sun 05/17/26Mon 05/18/26Tue 05/19/26Wed 05/20/26
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 61 87 63 89 64 89 67 88
TEMP 65 64 86 82 67 66 89 83 70 68 89 84 72 70 88 82
DEWPT 56 57 59 61 60 61 61 62 61 62 62 62 62 63 62 63
RH 73 78 40 49 78 84 39 49 73 81 41 48 71 78 42 53
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW CL FW FW FW FW FW SC FW B1 B1
POP 12HR 5 5 10 5 10 5 20 30
RAIN SHWRS IS 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