Tipton, Oklahoma Mesonet Observation Site Records Tornado Passover

In an amazing coincidence of right place right time, a tornado moved over a Mesonet observation weather station in Tipton, Oklahoma on November 7th. Thanks to the Mesonet network, this plot spanning a few hours before the tornado shows what happened as the tornado struck. The reason the plot says 'Station knocked down by debris is because the debris associated with the Tipton tornado hit the Mesonet site and knocked it over, therefore ceasing recording.
This is quite an amazing glimpse into the midst of a tornado and may help NOAA researchers with tornado research in the future.

Some stats from this graph:
-Maximum wind gust is estimated (by looking at the graph) at 85 MPH.
-Minimum central pressure was recorded at 913.47 millibars- the equivalent of a Category 5 hurricane.

One-Day Snowfall Amounts Top 6 Inches in Iowa; Snow Currently Falling in Wisconsin

Notes: This does not involve today's Wisconsin snowfall amounts. That data will not be calculated until tomorrow.

Check out the snowfall a low pressure system moving north from the Southern US has put down. It looks like Iowa has come down with a maximum snowfall amount of 7 inches, as seen below.

Today's Snowfall Amounts (not counting snowfall for NE Iowa in recent hours)

It appears that the maximum snow axis set up in southwest Iowa, unsurprisingly some distance from the rain/snow line, but enough so that it was all snow. We can definitely see the cutoff for where rain fell and where snow fell. So the question now is, where is the most snow falling now?

The heaviest snow is currently falling in Green Bay northward into Marquette, Michigan. This snow comes on the cold side of a 996 millibar low pressure currently moving northward. This snow ought to tone down as we move into the nighttime hours, and tomorrow we will be able to see how much snow has accumulated. So why snow instead of rain for them?

The regions currently receiving snow did not have to go through the warm front currently draped across the Canada/US border along the Great Lakes, sweeping up milder air from the Florida region. With the lowest pressure also centered over Lake Michigan, it made for a 'perfect snow' scenario for the East Wisconsin region, with the colder atmospheric levels in place.

Hotel Pool Security Camera Records 2010 7.2 California Earthquake

Mesoscale Discussion #2310- Heavy Snow- Wisconsin/NE Iowa

MESOSCALE DISCUSSION 2310
   NWS STORM PREDICTION CENTER NORMAN OK
   0441 AM CST WED NOV 09 2011
   
   AREAS AFFECTED...PARTS OF NERN IA/SERN MN NORTHEASTWARD THRU MUCH OF
   CNTRL WI
   
   CONCERNING...HEAVY SNOW 
   
   VALID 091041Z - 091415Z
   
   HEAVY WET SNOW AND GUSTY STRENGTHENING WINDS ARE EXPECTED TO DEVELOP
   ACROSS THE REGION THROUGH MID MORNING.
   
   AS A VIGOROUS SHORT WAVE IMPULSE AND ASSOCIATED MID/UPPER JET STREAK
   LIFT NORTHEASTWARD ACROSS THE MIDDLE MISSISSIPPI VALLEY TOWARD THE
   UPPER GREAT LAKES...RAPID DEEPENING OF AN ASSOCIATED SURFACE CYCLONE
   IS NOW UNDERWAY.  LATEST SURFACE DATA SUGGEST THAT THIS IS OCCURRING
   FASTER THAN PERHAPS MOST MODEL GUIDANCE HAS INDICATED...AND FURTHER
   INTENSIFICATION IS EXPECTED AS THE LOW TRACKS FROM WEST CENTRAL
   ILLINOIS INTO THE VICINITY OF SOUTHERN LAKE MICHIGAN BY 18Z.  
   
   LATEST RUC GUIDANCE SUGGESTS THE DEVELOPMENT OF A NEW DEFORMATION
   ZONE...WITH SUBSTANTIAL STRENGTHENING OF MID-LEVEL FRONTOGENETIC
   FORCING EXPECTED DURING THE 12-16Z TIME FRAME ALONG AN AXIS NEAR OR
   JUST NORTH OF NORTHEASTERN IOWA TOWARD CENTRAL UPPER MICHIGAN.
   THERMODYNAMIC PROFILES ACROSS THIS REGION ARE ALREADY MOSTLY BELOW
   FREEZING...AND MELTING OF SNOW IS EXPECTED TO CONTRIBUTE TO COOLING
   OF THE BOUNDARY LAYER CLOSER TO FREEZING.  COUPLED WITH INCREASING
   LIFT IN THE FAVORABLE MIXED PHASE LAYER FOR DENDRITIC ICE CRYSTAL
   GROWTH...HEAVY SNOW RATES IN EXCESS OF 1 INCH PER HOUR APPEAR
   POSSIBLE IN THE PRESENCE OF RELATIVELY HIGH PRECIPITABLE WATER
   VALUES AROUND OR ABOVE .5 INCHES.