Skip to main content
26 votes
Accepted

With all the rain Seattle gets, why is widespread flooding relatively rare?

Regarding climate, it does not rain in Seattle as much as people think; Seattle is in the snow shadow of the Olympic Mountains. It doesn't rain much in summer at all. Seattle gets rather dry in July ...
David Hammen's user avatar
  • 23.7k
19 votes

With all the rain Seattle gets, why is widespread flooding relatively rare?

Catastrophic flash flooding is usually a sign of poor city/road planning in flat areas or due to torrential downfall of rain. The reality is that all the terrain in Washington allows water to drain, ...
f.thorpe's user avatar
  • 13.8k
7 votes

With all the rain Seattle gets, why is widespread flooding relatively rare?

We do get flooding in the Puget Sound lowlands, but it actually happens most often when a mid-winter warm front brings a moderate amount of rain to higher elevations, causing sudden, extensive ...
juliaseid's user avatar
5 votes

With all the rain Seattle gets, why is widespread flooding relatively rare?

To add some concrete data to some of the great answers already here: Seattle is actually not particularly rainy, especially compared to other parts of WA, but also compared to other cities in the US. ...
stef's user avatar
  • 51
5 votes
Accepted

How are lightning and thunderstorm intensity linked?

Is the ratio of IC to CG lightning relevant? Yes. Primarily, severe storms tend to have very few cloud-to-ground (CG) strikes. Thus, the ratio of IC:CG is likely going to be very high.1 2 However, ...
hichris123's user avatar
  • 1,920
5 votes
Accepted

Why do hurricanes hitting the US East Coast seem to go north once hitting land?

It is mostly due to the Coriolis effect (aka Coriolis Force). (Another reference here) Because of the Coriolis Effect, parcels of air (think of boxes of air) in the northern hemisphere are deflected ...
BarocliniCplusplus's user avatar
4 votes
Accepted

Does the Columbia Basin, North Cascades and Idaho Panhandle/Clearwater get a lot of violent, rotating supercellular thunderstorms?

Note: These inputs are of a meteorologist who has quite actively tracked severe weather around the US for a couple decades... but also hadn't spent as much time in or attention on the west and ...
JeopardyTempest's user avatar
4 votes

With all the rain Seattle gets, why is widespread flooding relatively rare?

Because soil drainage would be higher and the ground would take long to saturate Floods don't always happen in Rainy weather all the time because first the soil needs to be saturated (the point where ...
Tardy's user avatar
  • 574
3 votes

Does a weather authority rate/measure floods after they happen?

I'm not sure whether anyone officially evaluates it (consistently), but here are a few ideas for checking it yourself (for the US, since you mentioned the NWS): On the precipitation end, you could ...
damp_civil's user avatar
3 votes
Accepted

What makes a typhoon suddenly turn by 90 degrees? (e.g. 2021 In-fa/Fabian)

My first observation upon looking at the picture was that Typhoon In-fa (the southernmost one in the picture) nearly stalled prior to making the right angled turns in its path. There is a clustering ...
Fred's user avatar
  • 24.7k
3 votes

Tornados from landspouts or gustnados

Although there is a superficial resemblance between tornados and dust devils, they are very different. There is no connection between the two. I have seen lots of dust devils in reality, but tornados ...
Michael Walsby's user avatar
2 votes
Accepted

Why do tropical cyclones get more attention than extratropical cyclones?

Extratropical cyclones are relatively well understood. They often follow the Norwegian Cyclone model, which was developed in the 1910's and 1920's. Because of their spatial extent, extratropical ...
BarocliniCplusplus's user avatar
1 vote

Average Snowfall for Snowy Places?

Here are some cities and locations Average Annual Snowfall for the Following Cities and Locations (in inches) Asheville, North Carolina: 9.9” Waynesville, North Carolina: 14.1” Milwaukee, ...
Ryan Amalfitano's user avatar
1 vote

Tornados from landspouts or gustnados

I think what you are asking is there a way to do a research project that would look for a correlation between number of dust devils and tornadoes. Dust devils, being very local phenomena, are not ...
verisimilidude's user avatar
1 vote

Could a firestorm create a hurricane-like cyclone?

I don't think so. A large fire could generate a circulation with strong low-level convergence and upper level divergence that would cause subsidence as the air radiatively cooled. If the fire were ...
brian's user avatar
  • 47
1 vote
Accepted

How can I learn to make mesoscale/synoptic analyses of major weather events?

You're definitely on the right path with wanting to dig into raw data yourself. RAP has always been a pretty solid source of useful basic data. But in terms of making sense of the data, it indeed ...
JeopardyTempest's user avatar
1 vote
Accepted

Why is it so important to gather data from inside tornadoes?

Generally speaking, the types of data gathered outside a tornado can also be measured inside the tornado. Currently, forecasters try to estimate an area where tornadoes usually are. The forecasting ...
BarocliniCplusplus's user avatar

Only top scored, non community-wiki answers of a minimum length are eligible