National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu May 1 2025

NCZ018-020800-
RAWS 311941
36.22N  81.63W Elev. 3254 ft
131 AM EDT Thu May 1 2025

Date           04/30/25      Thu 05/01/25            Fri 05/02/25            Sat
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                 58          74          56          73          54
TEMP                   60 58 60 68 71 73 64 62 59 57 58 67 72 70 64 60 57 55 56
DEWPT                  56 55 56 56 54 56 55 54 53 53 54 55 54 56 55 54 53 53 54
MIN/MAX RH                   89          55          88          54          93
RH                     87 90 87 65 55 55 73 75 80 86 86 65 53 61 73 81 86 93 93
WIND DIR                S SW SW  S  S  S  S SW SW  W  W SW SW SW SW  W  W  W SW
WIND SPD                1  2  2  9 13 12  6  5  4  3  3  6  8  5  2  2  2  2  3
WIND GUST                          24    19 16 16 13 13          12            
CLOUDS                 B1 SC B1 SC B1 B1 SC B1 SC B1 B1 B1 B1 B1 SC SC SC B1 B1
CLOUDS(%)              63 42 53 37 52 69 48 64 46 53 57 59 56 61 45 45 40 55 61
VSBY                   10  9  9 10 10 10 10 10 10  9  7 10 10 10 10            
POP 12HR                     50          40          30          70          40
RAIN SHWRS                      IS IS SC SC SC SC SC SC SC SC NM SC SC SC SC NM
TSTMS                           IS SC SC IS IS          IS SC SC SC SC IS IS   
MIX HGT                <1 <1 <1  3  4  3 <1 <1 <1 <1 <1  3  5  2 <1            
T WIND DIR             SW  W SW SW SW SW  S SW SW  W SW SW SW SW  S            
T WIND SPD              2  4  3 14 17 20  4 11  8  5  5 11 11 11 10            
DISPERSION             VP VP             PR PR VP VP             VP VP VP VP   
ADI                     1  2  4 63 49 47  3  8  5  3  6 39 48 31  5            
MAX LVORI               5  5  5  1  1  1  3  4  4  6  5  1  1  1  3            
STABILITY               F  F  B  B  D  D  E  E  E  F  B  C  C  C  F            
CEILING                    None  None  1300  None  None  None  None  None      
STA PRES                  26.95 26.95 26.89 26.89 26.88 26.88 26.86            


Date           05/03Sun 05/04/25Mon 05/05/25Tue 05/06/25Wed 05/07/25
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       67      47      64      44      63      46      67      48      70
TEMP          64 60 50 49 64 57 49 50 60 58 50 51 65 60 52 53 68 63
DEWPT         53 49 47 46 43 44 44 45 46 46 46 46 46 46 46 47 47 49
RH            67 67 89 89 46 62 83 83 60 64 86 83 50 60 80 80 47 60
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC FW FW SC SC SC
POP 12HR           80      40      40      30      40      30      30      20      30
RAIN SHWRS    NM  O SC SC SC SC SC SC SC SC SC IS SC SC IS IS IS SC
TSTMS         IS SC 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