Menu
Week in Review 36: September 2-8, 2012

Precipitation for Week 36 (September 2-8, 2012)

Week in Review 36: September 2-8, 2012

September 10, 2012 |  by

Week 36: September 2-8, 2012

Temperatures & Precipitation

A fairly warm week last week with a majority of the continental United States being at or above normal for the week. The Central U.S. was quite warm during the day, with the average high temperature running 8 degrees above normal across Oklahoma and adjacent locations.  Many other areas were at or a few degrees above normal as well, including the rest of the Plains, the Northeast and parts of the Western U.S. too.  Low temperatures were also dominated by above normal conditions, with some average lows well above normal over the East Coast and Southwest.  Late week cold air did allow areas of the Northern Plains and Northwest to drop below normal by a few degrees, that cool Canadian air is still across the area today.

Week 36 Temperatures

Temperatures & Anomalies for Week 36

The Western half of the U.S. was fairly dry last week with no significant precipitation noted anywhere on the map below.  A series of troughs was able to give the Eastern half of the U.S. some significant rains, with showers and thunderstorms traversing parts of the Plains and especially the East Coast and Ohio Valley.  Portions of Alabama and the Florida panhandle took on some of the heaviest rain last week, with over 10 inches observed in some locales.

Precipitation for Week 36

Precipitation for Week 36

 

Records/Extremes (NCDC Preliminary Data)

Record Daily Monthly All-Time
Maximum Temperature 521 30 0
High Minimum Temperature 1,486 154 0
Low Maximum Temperature 50 0 0
Minimum Temperature 67 1 0
Daily Precipitation 812 21 4
Daily Snowfall 0 0 0

Four all-time precipitation records were set last week across the nation, including N E Philadelphia Airport who measured 5.2″ on September 4; Pittsburgh Reservoir in New Hampshire with 3.4″ on September 5; Enosburg Falls, VT tallied 6.5″ on September 5; and 2 N of Tunica, MS recorded 9.1″ on September 7.

 

Severe Weather

NWS Warnings for Week 36

NWS Warnings for Week 36

SPC Preliminary Storm Reports
Date Total Tornado Wind Hail
September 2, 2012 86 0 83 3
September 3, 2012 61 1 49 11
September 4, 2012 239 3 176 60
September 5, 2012 120 0 104 16
September 6, 2012 219 0 149 70
September 7, 2012 392 0 336 56
September 8, 2012 299 3 296 0
A more active week than previous with numerous warnings from the Central Plains to the Northeast, in fact this past week totaled 80 tornado warnings and 1030 severe thunderstorm warnings!  Despite the 80 tornado warnings that were issued only 7 tornado reports were received last week by local NWS offices.  Wind damage was the primary threat with most of the thunderstorms last week, accounting for over 84% of the storm reports received.  A large majority of those reports came in the final two days last week as a strong trough traversed the Plains and Northeast in just 48 hours.
Jayson Prentice (41 Posts)