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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Mon Apr 27 2026
NCZ006-272000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
801 AM EDT Mon Apr 27 2026
Date Mon 04/27/26 Tue 04/28/26 Wed 04/29/26
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 73 43 71 52 75
TEMP 61 70 73 66 54 50 45 47 60 67 71 67 58 55 53 56 68 72 74 71
DEWPT 43 41 41 43 44 43 42 44 47 49 52 52 53 54 53 55 60 61 62 62
MAX/MIN RH 32 94 51 100 66
RH 51 35 31 43 69 77 89 89 62 52 51 59 83 96100 96 76 68 66 73
WIND DIR NE NE E E E SE SE N S SW SW SW S S S S S S SW SW
WIND SPD 5 5 5 2 2 2 1 0 2 5 4 2 2 2 2 2 5 8 8 4
WIND GUST 18
CLOUDS CL FW FW FW FW SC SC B1 B1 B2 B2 SC SC B1 B1 B2 B2 OV OV B1
CLOUDS(%) 4 17 6 22 23 32 38 66 68 83 76 44 42 55 62 84 86 98 98 65
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 50 20 100
RAIN SHWRS SC SC SC SC IS IS O O O O SC
TSTMS IS IS SC IS
MIX HGT 3 4 4 <1 <1 <1 <1 <1 2 3 4 <1 <1 <1 <1 <1 2 2 3 <1
T WIND DIR NE NE E E E SE SE SE N S SW SW S S S S S SW SW W
T WIND SPD 12 10 11 5 6 5 3 8 10 11 12 10 5 5 5 12 18 26 24 11
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 53 51 64 3 3 3 2 9 25 38 47 5 3 3 3 13 44 63 73 8
MAX LVORI 1 1 1 2 3 4 7 5 2 1 1 3 5 6 9 5 3 3 1 3
STABILITY A A A G G G G A B C C F F F F B C C C E
CEILING None None None None 6100 1800 None 2000 1000 1900
STA PRES 29.60 29.54 29.59 29.56 29.59 29.47 29.42 29.32 29.18 29.04
Date Thu 04/30/26Fri 05/01/26Sat 05/02/26Sun 05/03/26
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 52 71 42 72 44 68 40 71
TEMP 59 53 69 64 48 46 69 65 50 47 64 61 47 45 67 64
DEWPT 56 49 39 34 34 36 36 39 41 41 38 35 34 35 34 36
RH 90 86 33 32 58 68 30 38 71 79 38 38 60 68 29 35
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC FW FW FW FW FW SC B1 B1 B1 B1 SC FW FW FW
POP 12HR 50 10 10 20 30 30 10 5
RAIN SHWRS SC IS SC SC SC IS
TSTMS 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