|Routine Public Forecast Text Products|
|Regional Weather Summary||Issued twice daily around 4 AM/PM, providing a brief weather summary and forecast for our local forecast area.|
|Zone Forecast Product||A county-by-county forecast written in plain text for the next 7 days. Includes any long-term watches, warnings, and advisories.|
|Area Forecast Discussion||A technical discussion of the meteorological reasoning behind the forecast.|
|Hazardous Weather Outlook||Used for communicating the potential for hazardous weather, and preparedness for spotter activation.|
|Point Forecast Matrices||Point forecasts for selected locations that covers the next 7 days in matrix format.|
|Area Forecast Matrices||An area averaged forecast for the next 7 days in matrix format.|
|Coded Cities Forecast||A coded forecast for select cities in our forecast area. Information includes high and low temperatures, and 12-hour probability of precipitation.|
|Event-Driven Hazardous Weather Text Products|
|Short Term Forecast||An overview of weather trends during the next 1 to 6 hours. Normally issued only when precipitation or hazardous weather is occurring.|
|Special Weather Statement||Product issued to provide information on upcoming hazardous weather events or near term events that, while not severe, may cause inconveniences to public and other interests.|
|Watch County Notification||Product lists counties in the Jackson Forecast Area included in Severe Thunderstorm or Tornado Watches. This product also communicates removal of counties and cancellation/expiration of watches.|
|Tornado Warning||Typically issued for single counties or a small group of adjacent counties for 15 to 45
Criteria for Issuance: Issued when a tornado is sighted or indicated by National Weather Service Radar.
|Severe Thunderstorm Warning||Issued when a severe thunderstorm is imminent or occurring. Typically issued for single
counties or a small
group of adjacent counties for 15 to 60 minutes in duration.
Criteria for Issuance: A thunderstorm is considered severe when it contains winds of 58 mph or greater and/or hail 3/4" in diameter or larger.
|Severe Weather Statement||Issued as a follow-up to severe weather warnings. Used to relay urgent information about ongoing severe weather, such as damage reports and up-to-the-minute storm location updates. Also used to cancel or expire severe weather warnings.|
|Hydrologic Outlook||Issued when conditions appear favorable for possible flooding from 36 hours and beyond in the future. Drought statements are also issued using this product when conditions warrant.|
|Flood Watch||Issued when conditions are favorable for flooding during the next 36 hours.|
|Flash Flood Warning||Issued when flash flooding is imminent or occurring. Typically issued for single counties
or a small
group of adjacent counties for 2 to 6 hours in duration.
Criteria for Issuance: Flash flooding occurs when water levels rise rapidly to inundation within a period of 6 hours of the causative event. The flood waters must be 6 inches deep when flowing or 3 feet deep when standing to qualify for a flash flood event.
|Flood Warning||Issued when river levels are expected to rise to potentially damaging levels. Flood
Warnings can also
be used when overland flooding is expected to persist for many hours.
Criteria for Issuance: Flood Warnings are issued when flooding is expected to occur more than 6 hours after the causative event and are issued for river forecast points, areas along rivers and streams and for counties or portions of counties.
|Flash Flood Statement||Issued as a follow-up to Flash Flood Warnings and contains the latest flooding reports and radar trends.|
|Flood Statement||Flood statements may be issued as a follow-up to Flood Warnings, Flood Watches, or for high water in urban areas and along small streams (formerly the Urban and Small Stream Flood Advisory).|
|Winter Weather Product||Provides watches, warnings, and advisories for winter precipitation events.
Criteria for Issuance:
Snow Advisory: Issued for snow accumulations more than 1 inch but less than 4 inches.
Blowing Snow Advisory: Issued for localized blowing snow reducing visibilities to 1/4 mile or less with winds less than 35 mph.
Snow and Blowing Snow Advisory: Same criteria as Blowing Snow Advisory, except snow is falling in addition to blowing around.
Freezing Rain Advisory: Ice accumulation less than 1/4 of an inch with rain or drizzle freezing on contact.
Sleet Advisory: Sleet accumulation of less than 1/2 of an inch.
Wind Chill Advisory: Wind chills of 10 below to 24 below are expected. In most cases a minimum wind speed of 10 mph or more should be occurring or forecast before an advisory is issued.
Winter Weather Advisory: Issued when more than one predominant type of hazard is expected, one of which must meet advisory criteria described above.
Heavy Snow Warning: Snow accumulation is expected to be 4 inches in 12 hours, or 6 inches in 24 hours.
Ice Storm Warning: Ice accumulation of 1/4 inch or more.
Heavy Sleet Warning: Sleet accumulation of 1/2 inch or more.
Wind Chill Warning: Wind chills of 25 below or colder are expected. In most cases a minimum wind speed of 10 mph should be occurring or forecast before a warning is issued.
Winter Storm Warning: More than one predominant hazard is expected, one of which must meet warning criteria described above.
Blizzard Warning: Sustained wind or frequent gusts greater than or equal to 35 mph is/are expected, accompanied by falling and/or blowing snow, frequently reducing visibility to less than 1/4 mile for three hours or more.
|Non Precipitation Product||Provides watches, warnings, or advisories issued for a wide variety of hazardous weather
phenomena, such as
high winds, dense fog, extreme heat, or low wind chills.
Criteria for Issuance:
Wind Advisory: Sustained speeds between 30 and 39 mph for at least one hour, or wind gusts of 45 to 57 mph for any duration. Advisories are used for winds not associated with thunderstorms.
Lake Wind Advisory: Sustained speeds between 20 and 29 mph for at least one hour, or wind gusts of 35 to 44 mph for any duration. Lake Wind Advisories are used for winds not associated with thunderstorms and only from April 1 to October 30.
Dense Fog Advisory: Fog reducing visibility to 1/4 mile or less over a widespread area.
Heat Advisory: Heat index of 105 or higher for at least 3 hours or more with a minimum heat index around 75 during a 24 hour period.
Frost Advisory: Issued only during the growing season when widespread frost is expected with temperatures remaining above freezing.
Smoke Advisory: Smoke reducing visibility to 1/4 mile or less over a widespread area.
Blowing Dust Advisory: Visibility is greater than 1/4 mile, but less than one mile in blowing dust.
High Wind Warning: Issued for sustained speeds of at least 40 mph for an hour or more, or wind gusts of at least 58 mph regardless of duration. A High Wind Warning is used for winds not associated with thunderstorms.
Excessive Heat Warning: Issued when the Heat Index is expected to be at least 110 for 3 hours or more with a minimum heat index around 75 during a 24 hour period.
Freeze Warning: Issued when temperatures are forecast to be 32 degrees or less over a widespread area during the growing season.
Blowing Dust: Issued when visibilities are 1/4 mile or less due to blowing dust.
|Local Storm Report||Used to disseminate weather information. Includes the time and date of the event, its location, and any other pertinent information.|
|Fire Weather Text Products|
|Fire Weather Forecast||Issued twice daily during the Fire Season (Feb 1st thru May 15th and Oct 1st thru Dec 15th) and once daily otherwise. Contains weather elements of critical importance to fire managers, such as relative humidity, precipitation duration and amounts, smoke mixing heights, and transport winds.|
|Fire Weather Point Forecast||Issued daily during the fire season. Contains a coded forecast of weather elements critical to fire behavior for specific forest sites in our fire weather forecast area.|
|Fire Weather Watch/Red Flag Warning||Issued when extreme burning conditions are forecast.
Criteria for Issuance: Red Flag conditions are defined in eastern Kentucky as 1) Sustained 20-foot wind speeds of 15 mph or greater, 2) Minimum relative humidity of 25% or less, 3) and 10-hour fuel moisture values of 8% or less.
|Aviation Text Products|
|Terminal Aerodrome Forecast||An aviation forecast containing METAR-coded forecast data for a designated airport and its immediate vicinity. Valid for 24 hours in duration, issued 4 times daily.|
|Routine Hydrologic Text Products|
|Hydrologic Summary||Issued daily around 10 AM LST. Contains observed river stages and precipitation reports.|
|River and Lake Summary||Issued daily around 10 AM LST. Contains a 3 day river stage forecast for select locations in our hydrologic service area.|
|Climate Text Products|
|Daily Climate Summary||Issued around 1 AM LST and 4 PM LST each day. Contains climatological observed values, along with normals, records, and monthly, seasonal, and yearly accumulations.|
|Preliminary Local Climate Data||A summary of the daily climate statistics for the current month for a location, updated daily.|
|Monthly Climate Summary||Contains climatological observed values for the previous month, along with normals, records, and monthly, seasonal, and yearly accumulations.|
|Seasonal Climate Summary||Contains climatological observed values for the meteorological season. The meteorological seasons are defined as follows; Winter- December through February, Spring- March through May, Summer- June through August, Fall- September through November.|
|Record Event Report||Issued when a daily or monthly temperature or precipitation record has been tied or broken.|
|Regional Temperature & Precipitation Summary||Details maximum and minimum temperature along with 24 hour precipitation for select locations within our forecast area.|
|Supplemental Climate Data||A coded message sent at the 6 hour synoptic times (00 UTC, 06 UTC, 12 UTC, 18 UTC), around 08 UTC (for sunshine minutes only) and local midnight. The message includes details on cloud cover, precip measurements, snowfall measurements and sunshine minutes observed at the Jackson, KY Weather Forecast Office.|
|Supplemental Data Observation||A coded message sent only when certain weather events are observed at the Jackson, KY Weather Forecast Office, such as hail or ice pellets.|
|Miscellaneous Text Products|
|Hourly Weather Summary||Summary of hourly conditions from weather stations located in and around eastern Kentucky.|
|Public Information Statement||Issued to inform the public of non-routine events of interest. May contain weather safety advice, observed rain or snowfall reports, or storm damage survey results.|
|Civil Emergency Message||Issued at the request of an emergency manager when a large-scale evacuation or other public action is necessitated by a disaster, either man-made or natural.|
|Free Text Message||This message is to inform NWS offices, vendors, and users of WSR-88D data that the Jackson radar (KEPZ) has experienced an outage (either planned or unexpected). It includes reasons for the outage if known, expected outage time, and a statement of which surrounding radars can be used for radar information in eastern Kentucky.|