• Monday AM

    Updated: 2011-02-28 15:02:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Monday , February 28, 2011 Monday AM The most extensive precip is south of the city , but some strong bands to the north . Light snow last hour at Sea Tac in the southern band , and Port Angeles and Friday Harbor in the northern features . Too warm for snow at sea level--Sea Tac is at 452 feet . In heavy precip , the snow level can descend to the surface . Hard to get snow to the surface in strong onshore flow . even cold flow like this . unless you have sufficiently intense . precipitation The mountains are just getting pummeled . Posted by Cliff Mass Weather Blog at 7:02 AM 3 comments : Ferdi said . We actually got a light lumpy covering in the wee

  • Severe Weather is Likely on this Monday… Updated at 4am Monday

    Updated: 2011-02-28 10:30:12
    Here’s the latest map from the Storm Prediction Center. They have placed all of Alabama under a slight risk of severe weather, where the threat of large hail, damaging winds and isolated tornadoes exist today. A moderate risk of severe weather is in place over the Tennessee Valley, where several tornadoes are likely. I think [...]

  • Sunday Night Update

    Updated: 2011-02-28 04:57:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Sunday , February 27, 2011 Sunday Night Update Tonight's run has pulled back on the lowland snow see graphic for 24-h snow ending 4 PM I wanted all of you to see how even this close in forecasts can vary when the atmosphere is on the edge in this case rain versus snow One thing that hasn't changed is the snow in the mountains . they are going to get hit very , very hard , with 2-3 feet in places . Note that the snow level is very low . some wet snow on the higher hills and if you are above 700-1000 ft be prepared for lots of white stuff . Bigger threat south of the city as this band of very heavy precipitation gets established after 1 . AM

  • Severe Weather Update – Sunday at 10:30 PM

    Updated: 2011-02-28 04:39:18
    I’ve got some better news in terms of our severe weather threat for tomorrow. The new soundings are out, and a strong cap is in place. A cap basically keeps convection from naturally forming, as it acts as a block in the atmosphere. Since the cap is a bit stronger than previously expected, we aren’t [...]

  • Sunday Afternoon Severe Weather Update – 12:30pm

    Updated: 2011-02-27 18:41:16
    We’re getting into our spring severe weather season, and it’s already beginning on an active note. After Thursday night’s severe weather, now more severe weather is possible on Monday; in-fact, the storm prediction center has placed most of Alabama under a slight risk of severe storms, with a moderate risk over the northern 1/4th of [...]

  • The Olympia Mystery

    Updated: 2011-02-26 03:56:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Friday , February 25, 2011 The Olympia Mystery You've heard of the Bermuda Triangle . Perhaps the Dragon's Triangle of the Pacific . But there is another mystery of science . the Olympia Cold Anomaly Its amazing and beyond our . understanding For some reason on cold , clear nights Olympia Airport is often the coldest location in western Washington . often by far . Last night Olympia dropped to startling 5F . You heard , right five degrees above zero It was the all time record low for the date at that site . At the same time most of the rest of western Washington only dropped into the lower twenties to mid teens . To illustrate , here are the regional

  • Friday Afternoon Weather Update – 3:30 PM

    Updated: 2011-02-25 21:31:55
    A good Friday to you! There’s no doubt many of you were woken up by strong winds, heavy rain and some lightning last night, as a line of powerful storms worked across the state. There were numerous reports of damage across our area, with the most extensive tree and power line damage coming from areas [...]

  • How much snow fell around the region?

    Updated: 2011-02-25 16:18:24
    The National Weather Service compiled a great list of snow totals from the Feb. 23 storm. We also had an unofficial reports of 36" n Darrington, 24" n Burlington and 12" in Sedro-Woolley.

  • Line is moving east fast! Update at 12 AM Friday

    Updated: 2011-02-25 06:10:40
    The squall line is through Tuscaloosa and downtown Birmingham. There are numerous severe thunderstorm warnings along the line, where there are all kinds of reports of wind damage. Winds will gust 50 to 70 MPH along the line across all of central AL. The line will be through Linden, Marion and Centreville by 1am. The [...]

  • Storm Reports updated at midnight

    Updated: 2011-02-25 06:04:17
    Reports from the NWS in Birmingham… Report of roof blown off building on 171 north of Fayette 1 Wnw Hackleburg [Marion Co, AL] public reports TSTM WND DMG at 10:20 PM CST — two large trees down along old hackleburg rd. Report: winds gusting to 65mph at my location 7 miles North of Jasper along [...]

  • Severe Thunderstorm Warning for Dallas, Greene, Hale, Marengo, Perry and Sumter Co until 12:45 AM

    Updated: 2011-02-25 05:45:59
    BULLETIN – IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 1138 PM CST THU FEB 24 2011 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR…  WEST CENTRAL DALLAS COUNTY IN SOUTH CENTRAL ALABAMA…   SOUTHERN GREENE COUNTY IN WEST CENTRAL ALABAMA…  HALE COUNTY IN WEST CENTRAL [...]

  • Severe T-storm Warning for Tuscaloosa, Pickens, Bibb, Greene, Jefferson, Hale, Sumter Co until 12:30 AM

    Updated: 2011-02-25 05:27:01
    BULLETIN – IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 1124 PM CST THU FEB 24 2011 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR…BIBB COUNTY IN CENTRAL ALABAMA…   NORTHERN GREENE COUNTY IN WEST CENTRAL ALABAMA…  NORTHERN HALE COUNTY IN WEST CENTRAL ALABAMA…  JEFFERSON COUNTY [...]

  • Tornado Warning, Jefferson, Cullman, Walker until 12 am

    Updated: 2011-02-25 05:25:11
    BULLETIN – EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 1121 PM CST THU FEB 24 2011 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * TORNADO WARNING FOR…   SOUTHWESTERN BLOUNT COUNTY IN CENTRAL ALABAMA…   NORTHERN JEFFERSON COUNTY IN CENTRAL ALABAMA…   EAST CENTRAL WALKER COUNTY IN CENTRAL ALABAMA… * [...]

  • Severe T-storm Warning for Tuscaloosa, Pickens, Jefferson and Greene Counties until 11:30PM

    Updated: 2011-02-25 05:17:31
    SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 1057 PM CST THU FEB 24 2011 ALC057-063-073-107-125-127-250530- /O.CON.KBMX.SV.W.0012.000000T0000Z-110225T0530Z/ GREENE AL-PICKENS AL-TUSCALOOSA AL-JEFFERSON AL-FAYETTE AL-WALKER AL- 1057 PM CST THU FEB 24 2011 …A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN WALKER…SOUTHEASTERN FAYETTE…WEST CENTRAL JEFFERSON… TUSCALOOSA…SOUTHERN PICKENS AND NORTHERN GREENE COUNTIES UNTIL 1130 PM CST… AT [...]

  • Rain..Rain..

    Updated: 2011-02-24 17:57:41
    Highlights: -Major rainmaker on tap for Thursday -Cooler temperatures on Friday -Active pattern setting up for next week Forecast: Warm front will move north past Bowling Green early Thursday Morning, bringing warmer temperatures and raising dew points. Moisture will be streaming northward in front of a center of low pressure that will deeping in Oklahoma. By noon this front will [...]

  • Rain..Rain..

    Updated: 2011-02-24 17:57:41
    Highlights: -Major rainmaker on tap for Thursday -Cooler temperatures on Friday -Active pattern setting up for next week Forecast: Warm front will move north past Bowling Green early Thursday Morning, bringing warmer temperatures and raising dew points. Moisture will be streaming northward in front of a center of low pressure that will deeping in Oklahoma. By noon this front will [...]

  • NOWCAST 4:45 PM: SHOWTIME

    Updated: 2011-02-24 00:46:00
    : : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Wednesday , February 23, 2011 NOWCAST 4:45 PM : SHOWTIME Folks . the big threat for central Puget Sound . the one suggested by the model's last night is coming up . now So far things have gone pretty much on track . we started with rainshadowing over Seattle and the southern Sound . The as the flow turned more southwesterly the rainshadow shifted northward and the southern Sound had increased snow showers . As the northerly wind picked up a convergence line developed over NW Washington the brought snow to the San Juans to Skagit County . and then the northern Olympic Peninsula here is a shot from Port Townsend to . illustrate But now things are

  • Live snow event blog

    Updated: 2011-02-23 17:38:31
    The National Weather Service compiled a great list of snow totals from the Feb. 23 storm. We also had an unofficial reports of 36" n Darrington, 24" n Burlington and 12" in Sedro-Woolley.

  • A crazy day among the heavens

    Updated: 2011-02-23 17:38:31
    February 22 featured snow, rain, hail, lightning, graupel, sleet, and even a funnel cloud. The funnel cloud (above) was captured by Jesse Noll of Puyallup. Most of the fireworks were due to a raging Puget Sound Convergence Zone, which features a collision of north and south winds that wrap around the Olympic Mountains. Lucky for us, on Tuesday the zone's playground was right over the time lapse camera situated at the University of Washington's Atmospheric Sciences building. This camera is facing south toward Montlake and the Arboretum. Watch as the clouds both roll north and south -- at the same time! There are some west winds in there too. Crazy day to go flying!

  • Late season snow statistics for Seattle

    Updated: 2011-02-23 17:38:31

  • Cloudy Monday(2/21)….Showers?

    Updated: 2011-02-21 19:01:11
    Highlights: -Warm air and southwesterly flow bringing in higher temperatures -Chance of showers increasing through the day on Monday. -Cooler temperatures on Tues. Discussion: After warm frontal passage on Sunday, southwesterly flow will continue into Monday bringing with it some Gulf of Mexico moisture and a good chance of showers. A low pressure system will move across Indiana Monday night, [...]

  • Snow Mirage

    Updated: 2011-02-19 06:10:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Friday , February 18, 2011 Snow Mirage You have seen it many times . Driving down a hot road during the summertime you see some water on the road and when you get there . it is gone . The road is perfectly dry . The famous water on the road mirage due to the bending of light from sky by the heating roadway Well , we have had a wintertime mirage the past few weeks . the Snow Mi rage Home many times--3, 5, 7 days out--the models suggest a major cold spell with the flow amenable to snow . And then as we get closer it falls apart , often due to a trough moving westward of the initially forecast . position And its . back The model forecasts for next

  • Coastal Snow

    Updated: 2011-02-18 19:25:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Friday , February 18, 2011 Coastal Snow So close and yet so far . The latest visible satellite photo says it all . the low center is spinning offshore of our coast , too far to bring precipitation into the Puget Sound and Northwest WA lowlands . As a result it is sunny over much of the WA interior but precipitating and even snowing along the coast . Here is : Forks Or Cosmopolis , : WA Not a huge snowstorm , of course . This weekend will be sunny and dry over the entire region , but cooler than normal . By the way , the models were telling this tale of coastal snow . here is the 24-h snowfall ending 4 PM this afternoon from the UW WRF : model You would

  • How can forecasts vary among different sources?

    Updated: 2011-02-16 23:38:35
    With the crazy weather this week between thunderstorms to kick off the week and chances of lowland snow in the latter half of the week, one person asked how come forecasts from different vary when "we're all looking at the same charts?"

  • Hydrology Data Specialist - Bureau of Meteorology (Canberra)

    Updated: 2011-02-16 23:12:35
    $69,729 to $78,157 per annum, plus 15.4 % superannuation APPLICATIONS CLOSE: THURSDAY 3rd March 2011 For an experienced Hydrographic Data Analyst who likes to work in the office reviewing and editing Time Series data this is an outstanding opportunity to work with the Bureau of Meteorology validating data that has been provided under the Water Regulations. You [...]

  • Lowland Snow Chances Fading on Thursday

    Updated: 2011-02-16 18:05:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Wednesday , February 16, 2011 Lowland Snow Chances Fading on Thursday Forecasting snow over the western Washington and Oregon lowlands is a subtle game . To get snow , everything needs to set up right . and as I have noted before , it is easy for us to be mild and wet or cold and dry , but to be cold and wet takes some doing around . here The models on Monday looked like we had a significant shot at lowland snow , particularly above a few hundred feet and away from the water . But the trend of the recent runs has been a westward shift of a key feature--a trough coming out of the north--which could leave us with too little . moisture Here is the

  • Channel Differencing and Cloud Phase for GOES-R Imagery

    Updated: 2011-02-15 17:28:55
    Louie Grasso and Jeff Braun 8.5 um channel will be new in the upcoming GOES-R ABI.  Channel differencing between 8.5um and 12.3um, for example, can be used to differentiate between thin cirrus and low level liquid water clouds.  Because this … Continue reading →

  • Hold On to Your Hats

    Updated: 2011-02-15 01:33:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Monday , February 14, 2011 Hold On to Your Hats A very powerful front is now moving through the region and the associated low is stronger than forecast . Winds have gusted to 60-70 mph on the coast and 40-50 mph gusts in the interior are probable . My god . debris is flying off the new building next to me and precipitation is very intense . Just pounding against my window . The lights are flickering and my uninteruptable power supply is clicking on . I better finish this before I lose it . Here is the latest satellite picture . you can see the strong front making landfall . And the curl of clouds into the low center is . clear And here is the Camano

  • Cold and Snow Give Way to Major Warmup

    Updated: 2011-02-14 21:47:46
    Last week proved to be a very cold and snowy one in the Bowling Green area, with near-record lows and two separate accumulating snowfall events. First, on Monday, morning rain quickly changed to wet snow as a surface low passed just southeast of the area. This event produced 2.1 inches of snow in Bowling Green, [...]

  • Synthetic Imagery for Severe Weather Forecasting

    Updated: 2011-02-09 23:29:24
    For this blog entry, we’ll consider applications of the NSSL 4-km WRF-ARW model synthetic imagery towards a severe weather event that occurred on June 22, 2010.  Synthetic imagery is model output that is displayed as though it is satellite imagery.  … Continue reading →

  • Rotating Clouds in a Strong Convergence Zone

    Updated: 2011-02-08 02:27:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Monday , February 7, 2011 Rotating Clouds in a Strong Convergence Zone There was lots of excitement in my department around 4:45 PM today A strong convergence zone had set up this afternoon in cool , unstable air--in fact , there were multiple convergence zones evident in the radar at 4:47 PM as shown : here One convergence zone extended from the mountains of Vancouver Island and a double feature was downstream of the Olympics . The precipitation was highly convective with ice pellets observed at some locations and heavy rain at . others I was looking out the window and saw complex tendrils extending down out of the convective cloud and a lowering and

  • The Seesaw

    Updated: 2011-02-05 05:30:00
    : skip to main skip to sidebar Cliff Mass Weather Blog This blog provides my latest forecast or comments on current weather or other topics Friday , February 4, 2011 The Seesaw East and West Coast weather is very much a meteorological see saw--when we are warm they tend to be cold and snowy . And vice . versa Take a look at the minimum temperatures ending at 5 PM today click to expand Highs into the 60s and low 70s over coastal California . and 50F here in Seattle , while east of the Rockies , 30s extended way south into Texas and the deep . south The minimum temperatures on Thursday morning see below were amazing , with record-breaking cold hitting Arizona , New Mexico , Texas and the high . plains There has been a lot of media attention to the snow back east , but it is the cold that has

  • If Gizmodo talks about it, it must be a big weather event

    Updated: 2011-02-01 20:36:51
    After all, they did leak the iPhone4 months before it was officially announced by Steve Jobs. Maybe they know something about this storm meteorologists dont know. Today they are talking about the big weather event that is affecting much of the central US today and will affect the northeast US tomorrow. As of this morning [...]

  • forecast through mid week

    Updated: 2011-01-31 17:07:54
    An arctic cold front will be in place over the upper Ohio valley into the Ozarks. We will be in the warm sector as a result mild air will continue to stream into the region with highs in the low 50’s with the threat for a stray shower. Also low pressure will develop along the [...]

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