Weather Forecast Information

Here is some weather forecast information you might find useful.

20 hour forecasts updated every 3 hours (temperature, dewpoint, windspeed, etc.):
http://tgsv5.nws.noaa.gov/tdl/lamp/bullform.html

2 day forecasts updated twice daily (temperature, dewpoint, windspeed, etc.):
http://tgsv5.nws.noaa.gov/tdl/forecast/ngm/bullform.htm

weekly forecasts updated twice daily (min/max temperature, windspeed):
http://tgsv5.nws.noaa.gov/tdl/forecast/mrf/bullform.htm



PROJ - Projection in hours.

UTC - The Coordinated Universal Time. We are 4 hours behind UTC in the EST time zone. 00 UTC = 8pm Eastern Daylight Savings Time

TEMP -Temperature in Fahrenheit.

DEWPT - Dewpoint in Fahrenheit.

POPO - Probability of precipitation occurring on the hour. The precipitation need not be measurable.

PRECIP - Whether or not precipitation is expected. A "P" indicates that precipitation is expected on the hour.

POP06 - Probability of measurable precipitation in a 6-hr period.

PTYPE - Precipitation type. One of five types: pure freezing, frozen, liquid, a mix of rain and snow, or a mix of snow and freezing.

POZR - Probability of freezing rain.

POSN - Probability of snow.

OBVIS - Obstruction to vision. One of five types: none, haze, smoke, blowing phenomena, or fog.

VIS CAT - Visibility category.

HTc - Cloud heights in hundreds of feet where "c" is the layer reported. The variable "c" can be of the value 1 through 3.

CVRc - Cloud cover where "c" is the layer reported. The variable "c" can be of the value 1 through 3.

WNDDIR - Wind direction in tens of degrees.

WNDSPD - Wind speed in knots. (knots to mph factor = 1.15 (mph) / (knots)

Eric Bish
Extension Associate / Small Fruit & Viticulture
North Carolina State University
256 Kilgore Hall / Campus Box 7609
Raleigh, NC 27695-7609
919-515-3705 (office&mobile)
919-515-2505 (fax)
eric_bish@ncsu.edu