The long standing high over the eastern United States:
http://weather.unisys.com/images/sat_sfc_map_loop.htmlhas finally
pushed off into the sea and looks set to be replaced by another high
once a storm has passed through.
Only it is now the 19th and the next spell starts on the 20th: 10:25,
one that is remarkably similar to the spell for 14th to 21st March:
10:46.
I wonder what cyclogenesis the USA had then.
Here is a record of British weather that month:
http://www.climate-uk.com/monthly/0803.htm
A depression developed in the southwest approaches on the 14th, thence
travelling slowly across southern England on the 15th and 16th; the
temperature climbed to 15.4°C at Gravesend (Kent) on the 15th before
the rain set in, then most central and southern parts of England and
Wales had 18 hours of continuous rain amounting to 25-45mm, and to
60mm at Raunds (Northants).
At several places this was the heaviest March fall in a single day on
record.
In the wake of the depression a northerly flow became established but
a temporary rise in pressure meant that the period 17th-19th was cold
and quite sunny with night frosts, while snow and hail showers were
confined to eastern counties.
Ronaldsway (Isle of Man) measured 11.1h of bright sunshine on the
17th, while Tulloch Bridge (Lochaber) fell to -7.0°C early on the
19th.
A deepening depression tracked from Iceland past Shetland to Denmark
during the 20th bringing some rain, strong winds, and temporary rise
in temperature (up to 15.0°C at Leuchars), but in the rear of the
depression northerly winds returned with renewed vigour.
From my records of that Unisys map there is a lot of cyclogenesis
going on for this spell. A lot of it related to that Pacific High.
There was a tropical storm down toward Madagascar at the time. I don't
have a clue where there would be one this time, if any.
Last month a tornado struck the heart of down town Atlanta on Friday
14th. The other places were in South Carolina, Georgia and Texas. Not
that I am saying the next ones will hit the same place. That would be
unusual.
Those things tend to thwart my predictions if that's any consolation.
(More like adding fear and uncertainty to any doubt in my humble but
then... -well I suppose we did invade Iraq too...)
At least we don't actively (or at least, publicly) support Israel.
There wasn't that much going on seismically too neither, until
Xinjiang, that is.