Chinook

Just a few minutes ago, I saw the first nearby lightning bolts I've seen all year, with low rumbles of thunder. Several severe storm warnings were issued for NE Colorado this evening. Edit: my place had another thunderstorm at 11:00PM (previous was at about 10:00PM) with light to moderate rain, better thunder, and at several distinctive lightning bolts!! My rain totals are 0.30" and 0.26" for the last 2 days.

These are the narrowest storms I have ever seen a 12km model produce

SPC's web page is breaking all over the place.

Radar base velocity shows up to 75 knots aloft heading for Nashville

There have been about 9 recent severe wind reports with this line of storms, nearing the Mississippi River.

Severe cell in SE Illinois near Shelbyville - radar data showed that 60dBz went up to 30,000 ft. Hail was estimated to be 3", but no hail of that size was reported.

We have had a couple of sub-severe storms out east of me today. The last 12 days have been above 60 here, with a high of 78, yesterday, a high of 81 on 4/27 and roughly 80 degrees today. Edit: the cold front has come in. In combination with some rain showers, the cold front has increased the dew point to 48 degrees. Summertime! Edit: my place has had some rain showers and distant thunder today.

I downloaded Nexrad level-2 data to make this 3-d image of the Moore tornado, 5/20/2013

Three possible tornadoes in southeast Oklahoma

High winds of 60-70mph have been reported west of Springfield MO, and also high winds detected by radar in this area.

Here is what I found for the MRMS calculated hail swath across DFW (one-hour only). Color bar is in millimeters, so 25mm = 1"

Is that from the MRMS web site?

I am pleased to announce that we will have a new thread for the summer. Today, it was 80 degrees here. The snow from several days ago is long gone. We probably will have above normal temperatures for several days. I hope we will have a summer with normal to above-normal rainfall.

Eastern Iowa could get several severe storms, with a chance for tornadoes. The SBCAPE may only reach 1000-1800 J/kg, which is generally kind of low, considering the SHARPpy-based soundings seem to have high CAPE numbers a lot of times.

Central to northeast Texas may have a loaded-gun type sounding, with 72 dew points, and some 850mb winds of 30-35 kt in some areas. This could be a situation for isolated or scattered severe storms that are slow-moving with just enough 0-6 km shear for mesocylones. Otherwise, I expect widespread storms from Missouri southward to Texarkana and possibly Oklahoma City. These storms may be facing a situation that the better 500 mb wind/ 0-6 km shear is trying to catch up to the storms, and/or catch up to the higher 0-3km SRH.

This was perhaps the best rotational velocity near Charlotte 10:30PM EDT (02:30z)

I guess this is the TDS for the confirmed tornado near Rome, TN. it's possible the tornado went over I-40

You would think that 2-3" hail with 40-60mph wind was likely with that big cell. It may have had a tornado near Linden TX, but I have heard no reports on that. It was a wide circulation.

There is a possible rain-wrapped tornado at Argo, TX. There is also a possibility that there is a tornado near Mt. Pleasant TX, or generally on the southwest side of these storms.

Three updrafts near Okmulgee, OK. The north and south storms are roughly mirror images

I wonder if this was a QLCS waterspout at Carrabelle/ St Teresa

KJAX radar has shown reflectivity up to 78 dBz with hail up to 3.5". I think their radar is running a little hot.

There was a tornado report 4 mi southeast of Moultrie, and around Ellenton.

And just think, this used to be just a slight risk day that nobody was talking about.

I think the possible anticyclonic tornado moved into Effie or dissipated.