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April Pattern Disco -2016


Damage In Tolland

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Chris posted the ensemble guidance that showed about equal chances of very warm and very cold weather. So the current trend toward cold end of month was as likely as the warm one that Kevin was locking in.

In short, there was no real reason to be locking in big warm departures.

Yeah...we had been on that battleground on guidance. I was hoping the ridging over greenland would trend weaker with time like it has all winter, but of course it's mid April so now we'll get the blocking to verify or even trend stronger.
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Yeah...we had been on that battleground on guidance. I was hoping the ridging over greenland would trend weaker with time like it has all winter, but of course it's mid April so now we'll get the blocking to verify or even trend stronger.

did any model show the cold spell at the start of April 3 weeks out?
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Yeah...we had been on that battleground on guidance. I was hoping the ridging over greenland would trend weaker with time like it has all winter, but of course it's mid April so now we'll get the blocking to verify or even trend stronger.

 

Solid +3 SD on the EPS.

 

The colors are decidedly not pretty on the mid level maps. You know if you're into spring weather and all.

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Op looked less cold overall than 12z was yesterday..At least there was a warm day that wasn't there yesterday..which generally is a signal the model is starting to back off. We'll see

 

The problem is that this time of year, you can't go by pretty colors. The boundary is closer now so instead of sun and cool temps aloft, it's cold NE winds and precip. The former, despite colder temps aloft, is warmer at the surface due to sunshine. Get clouds and NE winds this time of year....and it's disaster. I don't care what the temp is at 850.

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The problem is that this time of year, you can't go by pretty colors. The boundary is closer now so instead of sun and cool temps aloft, it's cold NE winds and precip. The former, despite colder temps aloft, is warmer at the surface due to sunshine. Get clouds and NE winds this time of year....and it's disaster. I don't care what the temp is at 850.

The -KFS knows this...the +KFS, naso much.

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The problem is that this time of year, you can't go by pretty colors. The boundary is closer now so instead of sun and cool temps aloft, it's cold NE winds and precip. The former, despite colder temps aloft, is warmer at the surface due to sunshine. Get clouds and NE winds this time of year....and it's disaster. I don't care what the temp is at 850.

It's like mets have been saying..Euro being Euro in long range

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red flag issues don't really pertain to soil moisture content, per se - though soil moisture certainly helps.

 

it's mostly low RH in air, along with warm temperatures, accelerating the drying of dead material lane over from the previous winter. Being in said ultra dry environment, becomes a tinder-keg. red flag issues happen more frequently at this time of year then at any other time because this is the mostly likely tandem occurrence of warming temperatures with dry air. 

 

A month from now, green-up will be passe, and evapotranspiration from here to Timbuktu will mean the ambient RH will rarely fall below 50 % save for any brief incursions of polar air that only bounce back to 50% within 24 or so hours; otherwise, humid days will be arriving anyway, which limits the effectiveness of most fuel sources.

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