Current Weather Conditions-March 2008

kerry1960

temp 4.6c pressure 986 mb light s/se ,everything falling slowly , can anyone confirm pressure readings , my w/s has never been calibrated at sea level .

Paddy.1

Pressure is now 985.4 mb, falling more quickly.

Temp 5.0c
Dewpoint 1.9c.

Clouds lowering and looking very ominous.

Snowbie

Cirrostratus has enveloped here and lowering clouds to my west
988.1mb thats 0.4 drop in 15mins falling much quicker now also.

kerry1960

next stupid question , would pressure be much lower than sea level ,at my slight altitude .

Snowbie

kerry1960 wrote: »

next stupid question , would pressure be much lower than sea level ,at my slight altitude .

Yes, pressure is generally recorded at sea level. ie: pressure charts etc. At height it decrease's so the difference be lower where you are than at sea level but not so vast the difference.

Paddy.1

984.5 mb. A fall of 0.9mb in less than 15 mins. Here it comes, (for whoever gets it..;))

kerry1960

Snowbie wrote: »

Yes, pressure is generally recorded at sea level. ie: pressure charts etc. At height it decrease's so the difference be lower where you are than at sea level but not so vast the difference.

would we be talking less/more than 1 mb ?

Weather BOFH

Temp down to 3.9C here now, RH stopped rising, now at 79%, DP 0.6C.

Pressure dropping very quickly, 998.1mb here too, down 1.9mb in the last hour.

Looks like the first of the rain is pushing into the south west now.

Weather BOFH

kerry1960 wrote: »

would we be talking less/more than 1 mb ?

My station is reading and absolute pressure of 970.5mb with a relative of 988.0mb which I set using Casement (about a mile from here) as a reference.

I'm guessing the 970mb is what I'm actually reading here and the 988mb is adjusted to sea level. I'm about 500ft above sea level like yourself. I'm probably way wrong though!

Edit: Just found this, looks like around a 15 mmHg drop per 500 feet.

Paddy.1

983.6 mb in Tuam now. Oddly, the clouds seem to be thinning out. Most unusual.

Supercell

Currently 3.8°C and falling slowly, dp is -1.1°C , wonder if I'll see some transient snow tonight before it turns back to rain.

Paddy.1

982.6 mb
4.7c.
Dewpoint 1.6c

Some moderate gusts. Sky looks blue/black.

kerry1960

nemonoid wrote: »

My station is reading and absolute pressure of 970.5mb with a relative of 988.0mb which I set using Casement (about a mile from here) as a reference.

I'm guessing the 970mb is what I'm actually reading here and the 988mb is adjusted to sea level. I'm about 500ft above sea level like yourself. I'm probably way wrong though!

Edit: Just found this, looks like around a 15 mmHg drop per 500 feet.

got that mate , thanks , i guess there is no point in me issuing pressure readings then , having said that pressure has dropped 4mb in past hour , 4.3c , a very low temp for this loc with an approaching front .

Paddy.1

You can set up barometer Kerry to give yourself sea level readings even as high up as you are. Pressure is around 984/3 for your area right now. There should be some altitude setting on it that will allow you to adjust to this figure.

Supercell

Dew point here now -2.0°C, this is some crazy ass weather front on the way.

Trogdor

temp 6.4C dp -1.3C here
986.5mb falling rapidly

kerry1960 wrote: »

got that mate , thanks , i guess there is no point in me issuing pressure readings then , having said that pressure has dropped 4mb in past hour , 4.3c , a very low temp for this loc with an approaching front .

If you know how high up you are you could use this.
http://www.srh.noaa.gov/elp/wxcalc/altimetersetting.shtml

Paddy.1

980.8 mb
Wind picking up now, with short, impressive gusts.

Edit: Make that 980.3 mb. Now dropping at a rate of 0.1 mb a minute.

SpitfireIV

Carlow town:

Air: 5.8c
DP: 1.3c
Humidity: 73%
Pressure: 985.9

S'ly wind gusting up to 8/10mph

rc28

3.2c here, calm.

Sierra Oscar

Starting to get very windy here at the moment.

Snowbie

984.9mb and falling rapidly
6.1c and dp -0.9c
Wind now SSE at 7mph gusting to 14mph.

Saibh

when was the last time we had a storm like this can anyone tell me

Snowbie

Saibh wrote: »

when was the last time we had a storm like this can anyone tell me

If the storm was positioned off the north coast it would have made hurricane Charley in 1987 look like a breeze but we will never know now.So Charley is still up there.

kerry1960

thanks for the assist everyone ,

light rain
temp 4.1c
s/se nothing more than a strong breeze
pressure drop another 4mb in 65mins

Paddy.1

978.8 mb Wind is only coming in shortlived gusts. Calm in between.

4.5c.

Snowbie

983.9mb that is 1mb fall since last post which is quick. Rate of fall now at 2.8mb p/hr which is increasing.

6c dp up to -0.3c
Wind unchanged.

kerry1960

mods ........would it be a good idea to merge the rest of this thread with the severe storm alert thread .

only a suggestion, a lot of crossposting .

Snowbie

kerry1960 wrote: »

mods ........would it be a good idea to merge the rest of this thread with the severe storm alert thread .

only a suggestion, a lot of crossposting .

Well as the title suggests this is current weather conditions. The other thread is concerned with the storm itself.In extreme events like this the two threads will clash untill the thread or storm passes and that thread dies off while this remains.
I have no problem with that.
If it comes down to that i will just move posts but everyone is heeding the threads titles imo.

Snowbie

Snowbie wrote: »

983.9mb that is 1mb fall since last post which is quick. Rate of fall now at 2.8mb p/hr which is increasing.

6c dp up to -0.3c
Wind unchanged.

Rate of fall here is only 1.7mb/hr.
983.2mb
South at 10mph gust 20mph
5.5c
Dewpoint 2.1c

Snowbie

982.6mb and rate at -2.6mb p/hr down from -2.9mb p/hr
5.9c and as expected dp climbing to +0.5c

Wind avg gone up so breeze is consistent,gusting low still at 14mph.