Weather Warnings

NATIONAL WARNINGS


Status Yellow - Weather Advisory for Ireland

Potential for severe weather on Saturday 15th December. Hazardous conditions may result from heavy rain, and possibly wind also.

Issued: Thursday 13 December 2018 10:00

Updated: Thursday 13 December 2018 10:00

Valid from Saturday 15 December 2018 00:01 to Saturday 15 December 2018 23:59

This weather advisory has been issued by Met Eireann


MEANING OF WEATHER WARNINGS

Republic of Ireland

YELLOW WEATHER WARNING

RAIN – A yellow weather warning will be issued when there is a chance of rainfall amounts exceeding 20mm to 50mm in the space of 6 hours or more within a 24 hour period.

SNOW - A yellow weather warning will be issued when there is a chance of snow accumulations between 0cm to 3cm in the space of 6 hours or more within a 24 period.

WIND  - A yellow weather warning will be issued when there is a chance of mean wind speeds exceeding 50km/hr to 70km/hr (30mp/hr to 43mp/hr) and gusts exceeding 80km/hr to 110km/hr (50mp/hr to 68mp/hr)

FOG/FREEZING FOG -  A yellow weather warning will be issued when there is a chance of fog/freezing fog causing Limited travel disruption on roads.

LOW TEMPERATURE - A yellow weather warning will be issued when there is a chance low temperatures by day or night falling between -2C to -4C

HIGH TEMPERATURE - A yellow weather warning will be issued when there is a chance of high temperature by day rising between 25C to 29C.

THUNDERSTORMS - A yellow weather warning will be issued when there is a slight chance of isolated Thunderstorms affecting small areas of Ireland.

COASTAL AND MAIN LAND FLOODING - A yellow weather warning will be issued when there is a slight chance of coastal flooding or flooding to the mainland due to high seas or heavy rainfall.

UV WARNING - UV levels between 1 and 2 on the UV index no warning will be issued has it is safe to be outdoors.

 

ORANGE WEATHER WARNING

RAIN – A orange weather warning will be issued when there is a chance of rainfall amounts exceeding 30mm to 70mm in the space of 6 hours or more within a 24 hour period.

SNOW - A orange weather warning will be issued when there is a chance of snow accumulations between 3cm to 10cm in the space of 6 hours or more within a 24 period.

WIND  - A orange weather warning will be issued when there is a chance of mean wind speeds exceeding 60km/hr to 80km/hr (37mp/hr to 50mp/hr) and gusts exceeding 110km/hr to 130km/hr (68mp/hr to 80mp/hr)

FOG/FREEZING FOG -  A orange weather warning will be issued when there is a chance of fog/freezing fog causing widespread difficult driving conditions and delays to ferry and air traffic at airports.

LOW TEMPERATURE - A orange weather warning will be issued when there is a chance low temperatures by day or night falling between -5C to -10C.

HIGH TEMPERATURE - A orange weather warning will be issued when there is a chance of high temperature by day rising to +30C or more for a period of one day.

THUNDERSTORMS - A orange weather warning will be issued when there is a chance of widespread thunderstorms affecting large areas leading which could lead to spot & flash flooding and power outages.

COASTAL AND MAIN LAND FLOODING - A orange weather warning will be issued when there is a moderate chance of coastal flooding or flooding to the mainland due to high seas or heavy rainfall.

UV WARNING - A orange warning will be issued when there is a chance of warmer spell of weather leading to UV levels rising between between 3 and 7 on the UV index. Protection from the sun is needed during midday hours.

 

RED WEATHER WARNING

RAIN – A red weather warning will be issued when there is a chance of rainfall amounts exceeding 40mm to 70mm or more in the space of 6 hours or more within a 24 hour period.

SNOW - A red weather warning will be issued when there is a chance of snow accumulations between 10cm or more in the space of 6 hours or more within a 24 period.

WIND  - A red weather warning will be issued when there is a chance of mean wind speeds exceeding 60km/hr to 80km/hr (37mp/hr to 50mp/hr) and gusts exceeding 130km/hr 160km/hr or more (80mp/hr to 100mp/hr or more)

FOG -  There is no red warning for fog

LOW TEMPERATURE - A red weather warning will be issued when there is a chance low temperatures by day or night falling between -10C or lower.

HIGH TEMPERATURE - A red weather warning will be issued when there is a chance of high temperature by day rising to +30C or more for period past 24 hours or more.

THUNDERSTORMS - A red weather warning will be issued when there is a chance of severe thunderstorms affecting large areas which could lead to severe spot & flash flooding and power outages. Thunderstorms may form into a supercell.

COASTAL AND MAIN LAND FLOODING - A red weather warning will be issued when there is a high chance of coastal flooding or flooding to the mainland due to high seas or severe rainfall.

UV WARNING - A red warning will be issued when there is a chance of warmer spell of weather leading to UV levels rising between between 7 and  11+ on the UV index. Extra protection from the sun is needed during midday hours and people should stay indoors. Sun cream, a shirt and hat must be wore. 

NOTE – that all warnings issued by Donegal Weather Channel have nothing to do with the national forecaster and government run agency Met Eireann. All decisions on closing schools are based on the Met Eireann warnings and not Donegal Weather Channel.

Donegal Weather Channel has its own warning system and is there to help members of the public on a daily basis. Donegal weather channel aim is the provide early warnings to the public so the can prepare for adverse weather condations,