3/12 Tornadoes

SGF NWSFO has several PNS statements out regarding several of the tornadoes in their CWA. I think a couple were F3, a couple were F2, and another was less. TSA/TUL NWSFO also has some info on an F3 that struck from Centerton to Carroll co. AR.

From http://kamala.cod.edu/offs/KTSA/0603132312.nous44.html
MAXIMUM INTENSITY: F1 (73-112 MPH)
MAXIMUM WIDTH: APPROXIMATELY 100 YARDS
TOTAL PATH LENGTH: APPROXIMATELY 5 MILES [/b]

From http://kamala.cod.edu/offs/KSGF/0603140054.nous43.html
MAXIMUM INTENSITY: F2 (113-157 MPH)
MAXIMUM WIDTH: APPROXIMATELY 1/4 MILE
TOTAL PATH LENGTH: APPROXIMATELY 8 MILES

MAXIMUM INTENSITY: F3 (158-206 MPH)
MAXIMUM WIDTH: SLIGHTLY LARGER THAN 1/2 MILE
TOTAL PATH LENGTH: APPROXIMATELY 31 MILES [/b]

From http://kamala.cod.edu/offs/KSGF/0603140020.nous43.html
MAXIMUM INTENSITY: F3 (158-206 MPH)
MAXIMUM WIDTH: APPROXIMATELY 1/2 MILE
TOTAL PATH LENGTH: 40 MILES [/b]

From http://kamala.cod.edu/offs/KSGF/0603132350.nous43.html
..F-2 TORNADO HITS THE GRAVOIS MILLS AREA SUNDAY EVENING

AT APPROXIMATELY 1020 PM CST SUNDAY...A 3/8 MILE WIDE TORNADO PATH
WAS NOTED EXTENDING FROM THREE MILES SOUTHWEST OF GRAVOIS
MILLS...ACROSS STATE HIGHWAY 5 JUST SOUTH OF THE INTERSECTION OF
CR-5-14...ACROSS THE GRAVOIS ARM OF THE LAKE OF THE OZARKS...TO FIVE
MILES EAST OF GRAVOIS MILLS BEFORE LIFTING. [/b]

From http://kamala.cod.edu/offs/KSGF/0603132257.nous43.html
A NATIONAL WEATHER SURVEY TEAM DETERMINED THAT A F-1 TO F-2 TORNADO
TRACKED FROM JUST NORTH OF VERONA TO JUST NORTH OF MARIONVILLE IN
SOUTHEAST LAWRENCE COUNTY WHERE THE TRACK WIDTH WAS FROM 100 YARDS
TO NEAR ONE HALF MILE. THE TORNADO CONTINUED EAST NORTHEAST INTO
CHRISTIAN COUNTY TO JUST SOUTHEAST OF BILLINGS. A BRIEF SWATH OF F-3
TORNADO DAMAGE WAS FOUND SOUTHEAST OF BILLINGS WHERE TWO HOMES WERE
DESTROYED. THE TORNADO THEN TRACKED ACROSS NORTHERN CHRISTIAN COUNTY
SOUTH OF TERRELL TO NEAR HIGHWAY EE AND 65 NORTH OF NIXA WITH A
PATH WIDTH NEAR ONE HALF OF A MILE. THE TORNADO CONTINUED INTO FAR
SOUTHEAST GREENE COUNTY...WEBSTER AND WRIGHT COUNTIES...THEN LIFTED
JUST NORTHEAST OF COMPETITION IN SOUTHEAST LACLEDE COUNTIES.

FARTHER NORTH ANOTHER SURVEY TEAM REVEALED THAT F-1 TO F-2 TORNADO
DAMAGE OCCURRED IN CEDAR COUNTY SOUTHEAST OF EL DORADO SPRINGS. [/b]

Anyone wanna compile a location/length/width/intensity list for the tornadoes like was done last fall? LOL...
 
I've got 20 confirmed tornadoes so far beginning on the 9th.

Below is the list of confirmed tornadoes from the 3/12 event only -- accurate as of 145am EST on Tues.
Format is date -- time (UTC) -- state -- counties -- rating -- path length -- path width -- deaths -- injuries
  • 3/12 2205z MO Benton F1 5 miles UNK 0 0
  • 3/13 0220z IL Sangamon F2 (120mph) 6.5+ miles 900 yards 0 19
  • 3/13 0225z IL Sangamon F2(120mph) 4 miles 300 yards 0 0
  • 3/13 0400z MO Lawrence/Christian/Greene F3 40 miles 880 yards 0 0
  • 3/13 0420z MO Morgan F2 ~6 miles 660 yards 0 3
  • 3/13 0500z IL Ford F0 2 miles 30 yards 0 0
  • 3/13 0500z MO Webster F2 8 miles 440 yards 0 0
  • 3/13 0510z MO Webster/Wright/Laclede F3 31 miles 900 yards 0 0
Click the following link for more information: Confirmed Tornadoes of 2006

I'll update this list as more results come in during the next couple days.
 
Here's what I have so far... Click on the tornado for the PNS regarding that tornado, and click on the NWSFO for that office's website on this event. Note that many offices have pictures, radar images, and maps. Tulsa NWSFO even has some Google Earth images of the track overlayed with the satellite/visible view...

Tulsa NWSFO:
Cherokee Co (OK) [(9:09-9:42PM] -- F3. Length: 29 miles; Width: 0.25 miles (8 injuries)
Benton Co. (AR) [9:49-10:08PM] -- F3. Length: 15 miles; Width: 0.4 miles (12 injuries)
Benton Co. (AR) [10:11pm - 10:20] -- F2. Length: 5 miles; Width: 250 yards
Carroll Co. (AR) [10:50pm - 10:55pm] -- F1. Length: 3 miles; Width: 200 yards.

Springfield NWSFO:
(Benton Co. (MO) [~4:05pm] -- F1. Length: 5 miles; Width: 200 yards * Middle part of EAX tornado)
Vernon Co. (MO) to Cedar Co. (MO) to St. Clair Co. (MO) [8:47pm - ] -- F2. Length: 38 miles; Width: 1/4 miles
Vernon Co. (MO) [8:55pm] -- F1. Length: 1 mile; Width: 200 yards
Barton Co. (MO) to Dade Co. (MO) to Cedar Co. (MO) to Polk Co. (MO) to Hickory Co. (MO) [9:18pm - ] -- F0 (low-end). Length: 40 miles; Width: 30 yards (Yes, those are correct)
Newton Co. (MO) [9:22pm] -- F1. Length: 7 miles; Width: 1/8 mile
Newton Co. (MO) [9:38pm] -- F0. Length: 0.1 miles; Width: 1/8 mile
Larwence Co. (MO) to Christian Co. (MO) to Greene Co. (MO) [10:08pm-10:50pm] -- F3. Length: 40 miles; Width: 1/2 mile
Hickory Co. (MO) [10:17pm] -- F3. Length: 9 miles; Width: 1/4 miles (1 injury)
Morgan Co. [10:25pm] -- F2. Length: 6; Width: 3/8 mile
(Stone Co. (MO) [10:57pm] -- F1. Length: 3 miles; Width: 100 yards * Continued from AR)
Webster Co. (MO) [~11:03pm - 11:15pm] -- F2. Length: 11 miles; Width: 1/4 mile
Webster Co. (MO) to Wright Co. (MO) to Laclede Co. (MO) [11:20pm - 11:50pm] -- F3. Length: 31 miles; Width: Slightly larger than 1/2 mile
# 3-4 more tornado tracks possible

Kansas City / Pleasant Hill:
Leavenworth Co. (KS) [8:25am] -- F0
Jackson Co. (MO) to Ray Co. (MO) [9:12am] -- F1
Carroll Co. (MO) [9:50am] -- F0
Randolph Co. (MO) [10:46am - 10:50am] -- F0
Bates Co. (MO) [2:27pm - 2:42pm] -- F0
Pettis Co. (MO) [3:50pm] -- F0
Henry Co. (MO) to Pettis Co. (MO) to Cooper Co. (MO) [3:50pm - 4:30pm] -- F2 (Fatal)
Saline Co. (MO) [4:10pm] -- F0
Howard Co. (MO) [4:37pm] -- F0
Bates Co. (MO) to Henry Co. (MO) [7:52pm - 8:11pm] -- F2 (Fatal)
Johnson Co. (MO) to Pettis Co. (MO) to Saline Co. (MO) [7:54pm - 8:30pm] -- F3
Johnson Co. (MO) to Pettis Co. (MO) [8:40pm - 8:55pm] -- F2
Howard Co. (MO) [8:45pm] -- F2
Randolph co. (MO) [9:10pm - 9:33pm] -- F2 (Fatal)

St. Louis:
(Randolph Co. (MO) to Monroe Co. (MO) -- F2. Length: -- ; Width: 1/4-1/8 mile. * Continued from EAX Survey)
Monroe Co. (MO) -- F?. Length: 6.5 miles; Width: 200 yards ("AT THIS TIME A SECOND TORNADO FORMED APPROXIMATELY 300 YARDS SOUTHEAST OF THE FIRST TORNADO AND SEVERELY DAMAGED A HOME. BOTH TORNADOES TRAVELED PARALLEL FOR ABOUT 100 YARDS UNTIL THE FIRST TORNADO (NORTHERN-MOST) LIFTED. THE DAMAGE PATHS OF EACH TORNADO WAS APPROXIMATELY 200 YARDS WIDE. THIS TYPE OF TORNADIC EVOLUTION APPEARED TO BE SIMILAR TO FINDINGS DISCOVERED BY DR TED FUJITA WHEN SURVEYING THE APRIL 15 1965 PALM SUNDAY TORNADIC OUTBREAK NEAR ELKHART INDIANA.")
Monroe Co. (MO) -- F4. Length: (8.5 miles); Width: 1/4 mile
Monroe Co. (MO) -- F2. Length: (2 miles); Width: 75 yards
Calhoun Co. (IL) to Greene Co. (IL) to Scott Co. (IL) [7:04pm - ] -- F2. Length: 22 miles; Width: ~100 yards (it "skipped" up and down several times)
Scott Co. (IL) [7:20pm] -- F1. Length: 3.5 miles; Width: 100 yards (on the ground at same time as the one above)
Scott Co. (IL) [7:20pm] -- F1. Length: 2 miles; Width: 75 yards
Callaway Co. (MO) [11:40pm - ] -- F1. Length: ?; Width: 150 yards
Callaway Co. (MO) to Montgomery Co. (MO) [?] -- F0. Length: ?; Width: 200 yards
Montgomery Co. (MO) to Warren Co. (MO) [~12:00am - 12:15am] -- F3. Length: 6 miles; Width: 300 yards
Pike Co. (MO) [?] -- F0. Length: 1 mile; Width: ?
Pike Co. (MO) [6:30pm] -- F1. Length: 5 miles; Width: 125 yards
Pike Co. (MO) [6:35pm] -- F0. Length: 2 miles; Width: ?
Montgomery Co. (MO) to Lincoln Co. (MO) to Pike Co. (MO) [1:20am - 1:55am] -- F3. Length: 37 miles. Width: 300 yards
Callaway Co. (MO) [12:30am] -- F2. Length: 13 miles; Width: 100 yards

Some lengths are estimates based on the start/end locations given in the PNS, as LSX did not explicity give a length.


Chicago/Romeoville:
Ford Co. (IL) -- F0. Length: 2 miles; Width: 30 yards (85-100mph RFD winds nearby as well)

Lincoln:
[8:20pm - 8:26pm]Sangamon Co. (IL) -- F2 (~120 mph). Length: 5.5 miles; Width: slightly larger than 1/2 mile
[8:25pm - 8:30pm]Sangamon Co. (IL) -- F2 (~120 mph). Lenght: 4 miles; Width: 300 yards

Tornado Counts:
F0: 13
F1: 8
F2: 14
F3: 8
F4: 1
F4: 0
Not given: 1 (LSX)
TOTAL: 45

UPDATED: 12:15am 3-18-06
 
I've been working slowly but steadily on a web site for the tornado outbreak across SW Missouri.

Tornado Outbreak 3/12/06

Included is a link to the latest update from the SGF NWS.

This was an amazing outbreak for us. May 4th, 2003 used to be the "storm of the century" for us but this outbreak definately beats it at least in terms of number and strength of tornadoes.

The NWS keeps finding more detail and the surveys should be mostly wrapped up by Thursday. I will continue to work on radar loops for this event including an overlay of tornado tracks. Many more photos will be added as my schedule permits.
 
Jeff, im putting together the radar data, soundings with the information you and Sam are providing on the tornadoes. Specifically to see which tornadoes where associated with which cell. I hope to have it done by this weekend. I'll start a thread tonight and start build it up through the weekend.
 
In this video grab of the the Centerton and Bentonville tornado I am facing south southwest driving down hwy 72.
It appears to me there might be another bigger(main?) tornado and a better defined wall cloud to the right at the edge of the picture. Any thoughts? Besides pay better attention. :rolleyes:
March12th2006chase0345.jpg
 
As a note, I've updated the tornado count with the latest from LSX (St. Louis), who released a slew of PNS statements / damage surveys yesterday (I drove from OUN to MN today, so I'm just getting to it).

Regarding the large number of "strong" tornadoes (>=F2 I presume)... Remember that many of these storms were moving at 50-70mph, which certainly adds to the ground-relative wind speeds on the right flank of a tornado. This certainly doesn't account for the relatively high number of F2 and F3 tornadoes, but it probably impacts it to a degree. Interestingly enough, only one F4 has been determined...

Here's the latest from LSX NWSFO:
...PRELIMINARY TORNADO COUNT FOR MISSOURI REGARDING THE MARCH
11 - 12...2006 SEVERE WEATHER OUTBREAK...

...UPDATED INJURY TOTAL...

PRELIMINARY DAMAGE SURVEYS HAVE BEEN COMPLETED ACROSS MISSOURI
REGARDING THE SEVERE WEATHER OUTBREAK OF MARCH 11-12...2006. HERE
ARE THE TOTALS AS OF TODAY.

TORNADOES: 42

DEATHS: 9

INJURIES: 90

AS MORE INFORMATION IS GATHERED...THESE NUMBERS MAY CHANGE.
[/b]
--> http://www.srh.noaa.gov/printable.php?pil=...=20060316221043

I'm not sure what the average number of tornadoes is for the LSX CWA, but I'd imagine that 42 is pretty close to it... If this is the case, the LSX NWSFO matched its average number of tornadoes per year in a 2-day span in (which is technically, though not meteorologically) still WINTER!
 
I was wondering if anyone saved hires radar imagery of the supercell over Jonesburg, Missouri (Montgomery County). This was the second tornadic supercell to affect Montgomery county during the outbreak. I'm interested in images (level 3 if possible) of the storm as it was producing the F3 tornado at Jonesburg. The supercell was small and had an interesting 'discontinuous' hook echo with a ball of reflectivity detached from the parent storm.

All of the archived loops I've found end just as the supercell is approaching Jonesburg. If anyone could point me to this info I'd be appreciative.
 
Here's one more where it's a little closer to Jonesburg. It is at 0607z or 12:07 CST
 
Back
Top