Apr 17, 2018

April Snowstorm

A very late season snowstorm produced up to 33" of snow in central Wisconsin from April 13-15.
Some snow totals:

14.3" Sioux Falls, SD
15.8" Minneapolis - St Paul
24.2" Green Bay, WI
21.2" Appleton, WI
28.0" Stevens Point, WI
31.6" Carlsville, WI (Door County)
33.0" Amherst, WI (Portage County)

At Green Bay, the 24.2" that they received was the largest April snowstorm on record. The previous record was only 11.0" on April 4 - 5 in 1977. Incredibly, it was the 2nd largest snowstorm on record. The largest had been 29.0" on March 1 -2 1888. There have been numerous roof collapses in the Green Bay Area. Green Bay has had 36.7" of snow in just April alone. The previous snowiest April was just 15.1" in 1907.

The first half of April has been up to 16F below normal for the Midwest:
NWS Des Moines reports that temperatures for the April 1 - 15 period have been 11.5 - 16.0F below normal, and the coldest since 1881:

Estherville, Mason City, Waterloo, Ottumwa and Lamoni currently 
rank as the coldest start to April on record /April 1-15/. Des 
Moines is currently 2nd coldest, behind 1881, as it is the only of
the sites with records dating back that far.

Jan 12, 2018

First Week of January

The first week of January was more than 20F below normal from Illinois to West Virginia.

May 3, 2017

Full Unedited Video of Greensburg Tornado

Tomorrow is the ten year anniversary of the F5 Greensburg tornado. On the night of May 4, 2007 a tornado grew to a width of 1.7 miles and destroyed most of Greensburg, KS, where 11 people were killed. It was the first F5 in 8 years.
 

May 2, 2017

Texas Snow and Tornadoes


On April 29th, six tornadoes hit eastern Texas, including an EF4, an EF3, an EF2, and three EF0s. Four fatalities were confirmed.


The April 29th 12Z (7 AM CDT) sounding for Fort Worth showed that there was already 2,500 CAPE:
As dew points rose into the mid 70s in the afternoon east of Dallas, CAPE values exceeded 5,000 by 21Z (4PM CDT) according to NAM:
There was strong low level wind - greater than 40 knots at the 1 km level - and a clockwise turning wind field with height, producing sufficient shear and helicity for tornadoes.
On April 29 and 30, heavy snow fell across the High Plains as far south as the Texas Panhandle. Amarillo received 3" and Dalhart had 9". There were over 50,000 power outages in the Texas Panhandle caused by high winds. At Amarillo, winds gusted to 54 mph and visibility dropped to 1/2 mile.

Garden City, KS had blizzard conditions on the 30th and 11" of snow, causing three structures to collapse. 14" fell in the southwest corner of Kansas at Elkhart. One farmer near Sublette estimated that he had lost 80% of his crop. At Wallace in northwest Kansas, 28" of snow fell, with drifts of 8-10 feet. 33" fell at Lander, WY and 39" fell at San Isabel, CO.

Flooding has killed 7 in Arkansas and 3 in Missouri. In southern Missouri, the town of Houston received 11.15" of rain.

Apr 20, 2017

Minimum Maintenance Road

Yesterday when we were storm chasing in southeastern Nebraska, we came across a "minimum maintenance road". We decided to take a different route.

Mar 14, 2017

Chicago's Winter

It's been a weird winter for Chicago. December had 17.7" of snow - all of which fell before the 18th. The 19th had low temperature of -13. But the day after Christmas had a high 54. Only 0.6" of snow fell in January. February had just a trace. The normal for January and February combined is 19.9". In mid-February, there were six days in a row with a high temp in the 66 - 70 range. Now on March 14th, Chicago just received 7.5" of snow. December had 9.5" above normal snowfall, January was 10.2" below normal, February was 9.1" below normal, and March will be 2.2" above normal even if there isn't any more snow for the rest of the month.