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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sat May 16 2026
VAZ024-170800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 PM EDT Sat May 16 2026
Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue
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 59 91 62 93 65
TEMP 84 76 69 64 61 63 82 89 89 81 72 67 64 66 85 91 92 85 75 69 65 68
DEWPT 60 60 58 57 57 59 63 61 63 64 61 60 59 61 65 63 62 61 60 59 59 60
MIN/MAX RH 88 39 86 37 82
RH 44 58 68 78 87 87 53 39 42 56 68 78 84 84 51 40 37 45 60 70 81 76
WIND DIR SW SW W W W W W SW SW S N N N N S S S S S SW SW N
WIND SPD 5 2 1 1 1 1 1 3 3 1 0 0 0 0 2 6 6 3 2 2 1 0
WIND GUST 18
CLOUDS B1 B2 B1 SC B1 SC FW FW FW FW FW FW FW FW CL CL FW FW FW SC SC FW
CLOUDS(%) 63 80 56 45 54 45 12 9 18 8 9 8 13 22 3 5 7 12 13 26 27 22
VSBY 10 10 9 10 10 10 10 10 10 10 10 10 6 10 10 10 10 9
POP 12HR 20 5 0 0 0
RAIN SHWRS IS
MIX HGT 5 <1 <1 <1 <1 <1 3 6 7 <1 <1 <1 <1 <1 3 6 7 <1
T WIND DIR SW S W NW NW NW W SW S S S SW SW W W S S S
T WIND SPD 16 6 4 3 3 2 2 6 10 5 4 4 1 2 2 6 12 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 67 3 2 2 2 2 9 54 82 3 2 2 1 2 9 47 96 3
MAX LVORI 1 3 3 4 6 5 2 1 1 3 3 4 6 5 2 1 1 2
STABILITY C F F F F A A A A G G G G A A B B G
CEILING 5800 None None None None None None None None None
STA PRES 28.52 28.55 28.59 28.65 28.61 28.66 28.70 28.73 28.69
Date 05/19Wed 05/20/26Thu 05/21/26Fri 05/22/26Sat 05/23/26
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 94 66 92 64 78 55 68 54 73
TEMP 92 85 71 69 90 83 70 66 75 70 61 57 67 65 59 56 70 68
DEWPT 60 58 56 59 62 65 63 62 63 59 55 53 57 56 55 55 59 59
RH 34 40 59 70 39 55 78 87 66 68 81 86 70 73 87 96 68 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW B2 B1 B1 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2
POP 12HR 0 0 60 40 80 70 60 60 50
RAIN SHWRS IS NM SC SC NM O NM SC NM NM NM NM SC SC
TSTMS SC IS SC 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