The National Weather Service is shouting again:

Winter Storm Warning
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
331 PM PST TUE FEB 22 2011

A DEEPENING UPPER LEVEL LOW COMBINED WITH ARCTIC HIGH PRESSURE THAT WILL BE MOVING INTO THE AREA FROM THE NORTH WILL GIVE SNOW LATE TONIGHT THROUGH THURSDAY TO ALL OF WESTERN WASHINGTON...INCLUDING THE LOWLANDS. OVER WESTERN WHATCOM COUNTY AND THE SAN JUANS...STRONG NORTHEAST WINDS OF 25 TO 40 MPH WITH GUSTS TO 60 MPH WILL DEVELOP BY WEDNESDAY AFTERNOON AND WILL CONTINUE THROUGH WEDNESDAY NIGHT BEFORE SLOWLY EASING.

HEAVIEST SNOWFALL TOTALS WEDNESDAY THROUGH WEDNESDAY EVENING WILL BE ALONG THE STRAIT OF JUAN DE FUCA...WHERE COLD NORTHEAST WINDS MOVE UPSLOPE INTO THE OLYMPICS. ELSEWHERE IN THE LOWLANDS...SNOWFALL TOTALS ARE EXPECTED TO REACH 2 TO 6 INCHES...WITH LOCALLY HEAVIER AMOUNTS.

SNOWFALL WEDNESDAY MORNING WILL BE RATHER WET AND SLUSHY IN NATURE. TEMPERATURES WILL FALL INTO THE 20S FROM NORTH TO SOUTH LATER WEDNESDAY AFTERNOON AND WEDNESDAY EVENING. THEREFORE...A FLASH FREEZE WILL LIKELY AFFECT THE AFTERNOON OR EVENING COMMUTE OVER MUCH OF WESTERN WASHINGTON.

THE AIR MASS ALOFT WILL BE QUITE COLD AND UNSTABLE. SO EXPECT THE SNOWFALL TO BE BANDED IN NATURE WITH QUITE A BIT OF LOCAL VARIABILITY. THERE IS A CHANCE THAT SNOW OVER CENTRAL PUGET SOUND LOWLANDS COULD BE ACCOMPANIED BY A CLAP OF THUNDER.

MOISTURE MOVING OVER THE TOP OF THE ARCTIC AIR MAY RESULT IN ADDITIONAL ACCUMULATIONS LATER WEDNESDAY NIGHT INTO THURSDAY.

Not your best prose, National Weather Service. I expect better turns of phrase from you!

We turn to Cliff Mass:

Tuesday Update

Folks...this is serious. So serious that Ivar's is canceling my presentation tomorrow night at their Mukilteo Landing Restaurant....looks like we will try March 9th.

There has been plenty of snow already in the convergence zone.....

Mr. Mass goes on with enough graphics, video, etc. to merit that extra long ellipsis—feel free to then turn to Cliff Mass TLDR.