Showing posts with label bomb cyclone. Show all posts
Showing posts with label bomb cyclone. Show all posts

Wednesday 8 December 2021

Storm Warning

The eyewall Storm Barra
The eyewall of Storm Barra

Yesterday, we experienced a weather bomb. A fast developing system that hit hard and stayed around for a while. Our sailing club recorded wind gusts of more than 77 knots (143 kph or 89 mph) which is hurricane force. Lucky for us, the storm veered a bit more south than forecast, so we had a light easterly quadrant in the morning and northwesterly in the afternoon and overnight. Once again as with Lorenzo, the eye passed directly over us in Clew Bay. 

The white dot in the middle is over Clew Bay

We went to Westport in the morning and got our booster vaccinations then did our food shopping all in light E wind and showers. Then we braced for the worst as they had us in the Red Storm Warning zone for the evening. We are protected from the NW by the hill behind our house and it appears there was no damage.


By mid-afternoon, we had lashing rain and intense winds out of the NW, Our barometer bottomed out at 956 hPa. A 'weather bomb' is an unofficial term for a low-pressure system whose central pressure falls 24 millibars in 24 hours in a process known as explosive cyclogenesis. In the case of Storm Barra, the pressure dropped from around 1,006 millibars on Monday morning to 956 millibars 24 hours later, according to surface weather analysis by the NOAA's Ocean Prediction Center. So I looked at our barometer precisely at the centre of the storm. 

More than 24 hours later the wind is still blowing pretty hard at around 30 knots but gusting only into the 40s. It is bitterly cold even though it's 7.5 C but the wind chill really bites. Thankfully it's dry. We took a walk around the property to survey and saw no damage on the south-facing land. The polytunnel is fine as is the vineyard. No trees down but lots of kindling. Most of the leaves have been stripped from the vines but the vines did well after being tied up last month thank goodness. I still have lots of work to do up there. 

Met Eireann reported that Newport had 31 mm of rain yesterday but the land is not sopping wet as it was last week. The wind must have blown a lot of moisture away. They recorded gusts of 120 kph but they are further inland. Overall it was an interesting day. It started with a blanket of snow but I missed that. By the time I got up, it was melted as the temperature rapidly increased. By the end of the day, some 60,000 homes were without power. A violent gust of 156km/h was recorded off the coast of West Cork where scores of fishing vessels were anchored riding it out in Bantry Bay. 

Here are a few pictures from RTE. Here's a video from the lighthouse maintenance workers who got stuck out at Fastnet when the chopper couldn't pick them up. 

Apparently, Bantry was the worst hit with flooding. The promenade in Galway at Salthill was flooded at high tide - a high spring in tandem with the storm.  It was a pretty wild day. 


                    Met Eireann WEATHER DATA FOR 07-DEC-2021

Station                 Rain Max Min Sun     Wind         Gust Soil     Global Gmin

                        mm         oC oC hr Kts (Km/h)    Kts (Km/h)    oC J/cm^2 oC

Belmullet         16.8         7.0 1.5 0.0 20.3 (38)         55 (102)     5.9     88 0.6

Knock Airport         22.8         5.5 0.0 18.4 (34)         57 (106)     4.2         -0.1

Newport Furnace 31.0         6.9 0.8 22.5 (42)         65 (120)     4.4     81 0.0










Beautiful morning 8-12-21



Vineyard in good shape

Very few leaves remaining

Most leaves stripped by wind

Orchard is a fun playground

My assistant, Ghostie, likes to climb high

French and Spanish trawlers seeking shelter in Bantry Bay


Monday 25 October 2021

Could the West coast drought be over?

https://twitter.com/i/status/1452473186012983297 


Torrential rains and high winds pummeled the west coast from Oregon to central California dumping record rainfall in an 'atmospheric river' causing flooding and massive problems. Sonoma and Santa Rosa counties had more than 7 inches of rain in a 24-hour period. Mt. Veeder had a whopping 10 inches of rain in 24 hours - most in #NapaValley according to the official tally. Record rainfall after record drought. Climate change is definitely here. The “bomb cyclone” is a rare meteorological event. 

I wonder what effect it will have on the vineyards. At least they had already harvested the grapes. 

One good thing, the #DixieFire has been declared 100% contained @ 963,309 acres.


Yosemite Falls roared back to life. 

But the drought ain't over yet.