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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed May 27 2026
VAZ046-272000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 AM EDT Wed May 27 2026
Date Wed 05/27/26 Thu 05/28/26 Fri 05/29/26
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 83 66 82 57 78
TEMP 76 82 81 76 71 70 67 69 77 81 81 74 67 61 58 61 68 75 77 72
DEWPT 70 69 70 69 68 66 64 65 63 62 61 61 58 55 53 53 55 57 58 61
MAX/MIN RH 65 90 50 84 50
RH 82 65 69 79 90 87 90 87 62 53 51 64 73 81 83 75 63 54 52 68
WIND DIR SW SW SW SW W W NW NE NE N N NE NE NE NE NE SE SW SW SW
WIND SPD 6 8 8 5 4 3 2 3 5 4 5 4 4 4 3 3 3 4 3 3
CLOUDS B2 B1 B2 B1 B1 SC SC SC FW FW SC B1 SC SC FW FW SC FW SC SC
CLOUDS(%) 84 64 72 56 51 37 29 38 19 17 39 57 40 31 22 17 28 19 26 39
VSBY 10 10 10 10 9 7 7 10 10 10 10 10 10 10 6 10 10 10 10 10
POP 12HR 40 20 10 0 0
RAIN SHWRS SC SC IS IS
TSTMS SC SC IS IS
MIX HGT 2 4 3 <1 <1 <1 <1 <1 4 6 4 <1 <1 <1 <1 1 4 5 4 <1
T WIND DIR W W SW SW SW NW NW N NE N N NE NE NE NE NE E SW SW SW
T WIND SPD 14 16 16 11 5 8 2 11 11 8 4 9 6 5 6 10 3 6 9 12
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 39 60 49 8 4 4 1 13 52 59 25 6 3 3 3 19 17 43 51 6
MAX LVORI 4 1 1 4 6 6 7 4 1 1 2 3 3 5 5 3 2 1 1 3
STABILITY C C C E E G G A A A A E F F G A A A A G
CEILING 800 3900 None None None None None None None None
STA PRES 29.29 29.20 29.21 29.24 29.29 29.26 29.32 29.37 29.36 29.23
Date Sat 05/30/26Sun 05/31/26Mon 06/01/26Tue 06/02/26
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 58 79 52 73 52 75 54 74
TEMP 61 61 76 71 58 54 70 68 56 56 72 69 58 57 71 67
DEWPT 56 56 58 59 52 49 53 56 52 53 55 57 53 53 54 56
RH 84 84 54 66 80 83 55 65 86 90 55 66 83 86 55 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC FW FW FW SC SC SC SC SC SC SC
POP 12HR 0 10 5 5 5 10 10 30
RAIN SHWRS 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