Purplish Picture Present Promising Precipitation

 Models, Northern Arizona Weather, Winter Storms  Comments Off on Purplish Picture Present Promising Precipitation
Jan 292016
 

I’ve looked at a new site for computer model data. I think the pictures are prettier than the US Government site. No surprise there. The snow fall pictures are purple and orange for this weekend. It looks like the Flagstaff groundhogs will have a bit of digging to do to get to above the snow on Groundhog Day. In the image below, Flagstaff has a big 12 printed on it.

Three day total snow accumulation, ending midnight Monday night, February 1, 2016. (From TropicalTidbits.com)

Three day total snow accumulation, ending midnight Monday night, February 1, 2016. (From TropicalTidbits.com)

The colors are definitely more dramatic. The reaction to this storm from the National Weather Service hasn’t been until tonight. This storm is going to be big. It has shown up in the computer models as a big storm for a while. Just on Friday evening did they get excited.

There could be local effects causing the total to be more or less than the forecast. This is especially true with the windy start to the storm.

 Posted by at 10:11 pm

I’m confused, or not…

 Northern Arizona Weather, Winter Storms  Comments Off on I’m confused, or not…
Jan 052016
 

I’m looking at Wunderground‘s, the National Weather Services and Accuweather‘s precipitation forecasts. (The National Weather Service updated theirs while I wrote this post, it was roughly half of what it is now) Here’s how precipitation through Friday Morning looks:

National Weather Service 9-23 inches
Accuweather 8-20 inches
Wunderground 16-25 inches

The Wunderground forecast has been on the high-end. Maybe there isn’t a big difference. Does 8 inches feel much different from 16 inches? Does 25 inches look more wintry than 20 inches? The biggest forecast difference is probably tonight through Wednesday. Basically, plenty of snow is on the way.

One more note, Wunderground calls for rain on Friday.

 Posted by at 6:15 am

Easily 1 foot, possibly more…

 Northern Arizona Weather  Comments Off on Easily 1 foot, possibly more…
Jan 042016
 

I think Flagstaff is easily going to receive a foot of snow this week. I’m not sure I buy the NWS’s forecast for the majority of it showing up at the end of the week. I think there will be two serious rounds of precipitation. First between today and Wednesday. Second, at the opposite end of the week. Depending on temperatures, we could get over two feet this week.

 Posted by at 11:49 am

Month’s precipitation in one week

 Northern Arizona Weather  Comments Off on Month’s precipitation in one week
Jan 022016
 
GFS model precipitation forecast for January 2-9, 2016. (Climate PRediction Center)

After a drier than normal December, El Niño will get 2016 off to a wet start. The average monthly precipitation for Flagstaff in January is about 2 inches. Next week’s outlook from the GFS model at the Climate Prediction Center forecasts that amount to arrive between today and next Saturday. Multiple storm systems will move through the area over the next week.

GFS model precipitation forecast for January 2-9, 2016. (Climate PRediction Center)

GFS model precipitation forecast for January 2-9, 2016. (Climate Prediction Center)

In the 7-day total precipitation image above, Flagstaff is in the 2-3 inches of water range. After warmer temperatures this weekend, it will cool off and the precipitation will show up as snow. It could be heavy, wet snow at times. This is just the first week of the month.

Although December was dry, the total precipitation for 2015 was over 27 inches. This was 5 inches above average.

 

 Posted by at 8:13 am

Winter hits hard next week.

 Northern Arizona Weather, Winter Storms  Comments Off on Winter hits hard next week.
Dec 282015
 

December has been low on moisture compared to normal, and near normal for the average temperature. Low precipitation in an El Niño December probably is not very unusual. I’ll have to look. But, it all changes in the start of January. A series of storms is due next week. Arizona will get plenty of moisture with seasonal normal temperatures. Enjoy this week’s sun while it’s here.

6-10 and 8-14 day precipitation outlooks from the Climate Prediciton Center. (12-28-2015)

6-10 and 8-14 day precipitation outlooks from the Climate Prediction Center. (12-28-2015)

 Posted by at 3:32 pm

Will Bing’s dream come true?

 Northern Arizona Weather  Comments Off on Will Bing’s dream come true?
Dec 192015
 
Bing Crosby, White Christmas
Bing Crosby, White Christmas

Bing Crosby, White Christmas

I haven’t seen any forecasts that without a high likelihood of a white Christmas for Flagstaff. As it is often the case, the exact timing and total snowfall amounts are changing in the forecast, but several inches in or around Christmas Day are very likely. The 6-10 precipitation outlook is below. I don’t see a huge storm coming to Northern Arizona. Precipitation will be strong to the north and east. Travel across the Southwest could be difficult.

Precipitation outlook for December 24-28, 2015, from the Climate Prediction Center.

Precipitation outlook for December 24-28, 2015, from the Climate Prediction Center.

 Posted by at 5:26 am

Cold temperatures, wet weather…oh yeah, it’s winter time

 Northern Arizona Weather  Comments Off on Cold temperatures, wet weather…oh yeah, it’s winter time
Dec 072015
 

2 or 3 storms are on their way to Arizona. The next two weeks will be mostly, seriously, cold with occasional snow. It looks like the storm track is shifting to the south and splitting, as we expect for an El Niño winter.

More later…

 Posted by at 2:48 pm

The Blob Vaporizes

 Northern Arizona Weather  Comments Off on The Blob Vaporizes
Nov 242015
 

The sea surface temperature and temperature anomaly animation from the Climate Prediction Center shows 3 interesting features. First, the current strong El Niño conditions in the Equatorial Pacific are clear. Second, the North Atlantic cold conditions between the UK and Canada are persisting. Last, the blob off the West Coast is slowly disappearing. Interesting animation.

Global sea surface temperatures and anomaly animation from the Climate Prediction Center. (November 18, 2015)

Global sea surface temperatures and anomaly animation from the Climate Prediction Center. (November 18, 2015)

 Posted by at 1:36 pm

Is the GFS model struggling with El Nino and the Blob?

 Northern Arizona Weather, Outlooks  Comments Off on Is the GFS model struggling with El Nino and the Blob?
Nov 222015
 

I keep looking at the longer range forecasts, the GFS computer model and the Climate Prediction Center outlooks. It seems like the 6-10 day outlooks have a huge amount of variability. Last weeks snow was never clearly in any of them. One day the 6-10 would be dry. The next day it would be wet. Nothing solid. Yesterday everything had next weekend looking very wet. Today, Thanksgiving weekend looks dry.

I bet it is harder to run the models with the current conditions. There isn’t a great analog available between the Blob, El Nino and the very cold North Atlantic. So, hang on, it could be a rough ride with unexpected storms and dry periods.

The 3-month outlook from the Climate Prediction Center seems to have Flagstaff in the greater than 50% chance of above average precipitation. Southern Arizona could be even wetter.

 

Three month precipitation from the Climate Prediction Center for December, 2015 - February, 2016.

Three month precipitation from the Climate Prediction Center for December, 2015 – February, 2016.

And now, news from Munich, DE. We had our first snow on Saturday night. No real accumulation. We had an early dinner, then we went to an organ concert at Saint Peter’s Church near Marienplatz. When we came outside, huge flakes were falling. We walked across Marienplatz and went up to the Café Glockenspiel and watched the snow fall as we had dessert. It was beautiful.

The Christbaum on Marienplatz isn’t very healthy. It had a very dry summer that weakened it. It will be hard for it to make it through Christmas. The needles are falling off.

 

 Posted by at 2:15 am

Wet, cold…wintry

 Climate, El Nino/La Nina, Northern Arizona Weather  Comments Off on Wet, cold…wintry
Nov 032015
 

Today will start wet in Northern Arizona. Around night fall, maybe a  bit later, the rain should change to snow and start our El Nino winter. Almost an inch of water could fall from the skies in various forms. As it is often the case for these early winter storms, timing of the switch to snow is everything. A fairly dry period will follow as the winter storm pattern continues to develop.

60-hour total precipitation (North American Mesoscale Model) from the Climate Prediction Center.

60-hour total precipitation (North American Mesoscale Model) from the Climate Prediction Center.

 Posted by at 2:57 am
7 visitors online now
2 guests, 5 bots, 0 members
Max visitors today: 7 at 12:55 am UTC
This month: 18 at 02-03-2016 03:26 pm UTC
This year: 41 at 01-29-2016 07:29 pm UTC
All time: 1611 at 04-27-2012 06:53 pm UTC

Social Widgets powered by AB-WebLog.com.