National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1232 AM EDT Tue Mar 17 2026

NCZ003-180800-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
1232 AM EDT Tue Mar 17 2026

Date           03/16/26      Tue 03/17/26            Wed 03/18/26            Thu
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                 22          40          20          44          27
TEMP                   25 24 23 32 38 38 32 27 23 21 24 32 40 43 39 34 31 29 30
DEWPT                  14 12 12 14 12 11  9 10 11 10 11 12 15 18 20 21 22 23 25
MIN/MAX RH                   94          32          61          34          82
RH                     62 60 62 47 34 32 37 48 59 62 57 43 36 36 46 58 69 78 81
WIND DIR               NW NW  W  W  W  W NW NW NW  N  N  S  S  S  S  N  N  N  N
WIND SPD                9  6  4  6 10  9  3  1  1  1  0  2  3  3  1  0  0  0  0
WIND GUST              28 23 17 18 21 20                                       
CLOUDS                 SC FW FW FW FW SC FW SC SC SC SC SC SC SC SC SC SC B1 B1
CLOUDS(%)              38 21 17 18 18 41  6 31 49 46 47 29 26 40 50 41 44 52 57
VSBY                   10 10 10 10 10 10 10 10 10 10 10 10                     
POP 12HR                     10           0           0           0           0
RAIN SHWRS                                                                     
MIX HGT                 5  4  4  5  6  7  2 <1 <1  1  1  3  4  4  1            
T WIND DIR             NW NW NW  W  W  W NW NW NW NW  S  S  S  S  S            
T WIND SPD             33 27 20 19 18 20 13 10  8  5  5  9 11 16  5            
DISPERSION             PR PR             VP VP VP VP             VP VP VP VP   
ADI                    22 12 89111 83 98  6  5  4  3 10 35 57 78  3            
MAX LVORI               2  2  1  1  1  1  2  2  3  3  2  1  1  1  2            
STABILITY               E  F  B  B  C  C  G  G  F  F  A  B  B  B  F            
CEILING                    None  None  None  None  None  None  None  None      
STA PRES                  28.01 28.12 28.15 28.27 28.30 28.35 28.28            


Date           03/19Fri 03/20/26Sat 03/21/26Sun 03/22/26Mon 03/23/26
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       60      37      69      45      73      48      75      43      66
TEMP          57 53 42 39 66 60 50 48 70 65 54 50 72 65 51 44 61 55
DEWPT         37 39 37 37 43 43 43 43 47 47 46 45 45 43 38 34 35 32
RH            47 59 82 92 43 53 77 83 44 52 74 83 38 45 61 68 38 41
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 SC FW FW SC SC SC B1 B1 B1 SC SC SC FW FW SC SC SC
POP 12HR            5       5       5      10      10      10       5      10      10

$$


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