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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
440 AM EDT Mon May 25 2026
VAZ046-252000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
440 AM EDT Mon May 25 2026
Date Mon 05/25/26 Tue 05/26/26 Wed 05/27/26
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 76 64 78 64 82
TEMP 66 66 69 72 75 71 68 67 66 67 71 76 77 74 69 67 65 67 76 80 79 75
DEWPT 63 65 68 69 70 69 67 67 66 67 71 73 72 72 69 67 65 67 72 73 72 72
MAX/MIN RH 83 100 84 100 78
RH 90 97 97 90 84 93 97100100100100 90 85 93100100100100 87 79 79 90
WIND DIR S S S SW SW N NE N N NE E E E E SE SW SW SW W W W W
WIND SPD 2 3 4 5 4 3 2 2 2 2 3 3 2 1 1 2 2 4 5 5 5 3
CLOUDS OV OV OV B2 OV B2 OV OV B2 B2 B2 OV OV OV B2 B2 B2 B2 B1 OV OV B2
CLOUDS(%) 92 98100 85100 81 94 91 86 86 86100100 91 75 81 82 80 64100100 73
VSBY 6 6 6 6 6 7 6 6 6 7 3 6 6 6 6 7 7 7 7 6 6 7
POP 12HR 90 90 90 50 80
RAIN SHWRS SC NM O NM O SC NM SC NM SC NM O O SC SC IS IS IS IS O O IS
TSTMS IS IS SC SC IS IS IS SC SC SC IS IS SC SC IS
Obvis PF PF PF
MIX HGT <1 <1 1 2 2 <1 <1 <1 <1 <1 1 3 2 <1 <1 <1 <1 <1 2 4 1 <1
T WIND DIR S S S S S N N NE NE NE NE NE E E N NW W W W W W NW
T WIND SPD 1 3 9 9 10 1 3 6 3 9 6 9 6 3 2 1 1 12 18 18 14 9
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 4 15 21 18 1 2 3 2 10 13 20 14 2 1 1 1 10 50 50 24 4
MAX LVORI 8 9 5 5 4 8 10 9 10 8 5 4 4 7 10 10 10 8 4 3 3 6
STABILITY F B D C D F F F F B B D D F F F F C C D D F
CEILING 400 1100 1000 400 500 400 400 400 3700 3400
STA PRES 29.37 29.32 29.36 29.38 29.41 29.37 29.35 29.31 29.27 29.21
Date Thu 05/28/26Fri 05/29/26Sat 05/30/26Sun 05/31/26
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 63 83 57 79 57 75 54 70
TEMP 67 67 83 75 62 61 78 72 62 59 73 70 60 57 68 66
DEWPT 67 65 65 65 58 58 61 63 58 56 60 60 56 55 58 58
RH 100 93 55 71 87 90 56 73 87 90 64 71 87 93 70 75
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC SC SC SC FW SC SC B1 B1 B1 B1 B1 B1 B1
POP 12HR 20 20 0 20 20 30 20 40
RAIN SHWRS IS IS IS IS IS SC SC IS 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