Magnitude 2.3 Earthquake Appling Georgia April 23 2012

At first this recent earthquake in Georgia was not reported by the USGS due to it’s low magnitude, below 2.5. It was also not widely reported for that reason. Initial reports on April 24 2012 rated the Georgia earthquake at magnitude 2.1, since upgraded to a magnitude 2.3 by the USGS.

I came across this on twitter from Vicki Graf WRDW Weekend Meteorologist in Augusta Georgia. Here is the tweet, My reply, and Vicki’s reply confirming the earthquake:

Here’s the Initial report from WRDW TV 12 Augusta

Tuesday, April 24, 2012

APPLING Ga– Columbia County EMA Director Pam Tucker says after much research by the SRS Seismologist today, he confirms that there was 2.1 magnitude earthquake at 9:26 p.m. last night.

They found t was generally located near the intersection of the Appling-Harlem Highway and Columbia Road.

She says because all of his stations are located to the southeast, azimuthal coverage is not the best, meaning that the location is not completely accurate. However, it is probably within 1 -2 miles. The small tremor was not listed on the USGS map due to its small size. This would explain the loud boom and shaking that many residents felt.

Here’s the information from the United States Geological Survey [USGS]

Earthquake Details

This event has been reviewed by a seismologist.

Magnitude 2.3

Date-Time
Tuesday, April 24, 2012 at 01:26:29 UTC
Monday, April 23, 2012 at 09:26:29 PM at epicenter


Location 33.577°N, 82.257°W
Depth 0.1 km (~0.1 mile) (poorly constrained)
Region GEORGIA, USA

Distances
13 km (8 miles) NW (304°) from Evans, GA
13 km (8 miles) SW (224°) from Clarks Hill, SC
15 km (10 miles) NNW (339°) from Grovetown, GA
27 km (17 miles) NW (306°) from Augusta, GA
200 km (124 miles) E (95°) from Atlanta, GA

Location Uncertainty
horizontal +/- 2.1 km (1.3 miles); depth +/- 4.3 km (2.7 miles)
Parameters NST= 7, Nph= 10, Dmin=65 km, Rmss=0.49 sec, Gp=212°,
M-type=duration magnitude (Md), Version=A

Source
Southeast U.S. Seismic Network

Event ID se042512a

Read about other Earthquakes in Georgia

April 27 2011 – Before, During, and after Tornado Outbreak in Georgia and Alabama

Like others, I have a lot of stuff in files from April 27 2011. Here is what I have on this blog beginning on April 22 2011 and ending on May 2 2011. These are excerpts from the linked post where more information and images can be found.

Friday, April 22, 2011 – My first post hinting of what was to come – Easter and beyond

Next week there looks to be another round of storms by Wednesday. Haven’t narrowed down the specifics yet as to whether they will be severe or not.
Current Bufkit soundings hint at the possibility Wednesday evening and night, with high cape helicity values and shear. At this time it appears the further north, the stronger these storms will be.

We’ll know more as time goes as that system is still 5 days away.

Saturday, April 23, 2011Midwest possible flooding next week

I’ll be watching this system for impacts on the local area as it develops. It’s still looking to be a strong one.

Sunday, April 24, 2011Severe weather probable Wed. April 27 Thurs. 28

Models still indicating probable severe weather heading for our area Wednesday PM into Thursday AM. The exact timing is still in question, so keep abreast of the situation.

Best guess at this time:

Latest run of the GFS shows the brunt of activity around 11 pm ET Wednesday, indicating strong possible damaging wind and potential hail as main features. Cape and helicity values are highest at this time with cape:1338, Helicity:418, a Cins of 8, and an energy helicity index of 3.495525. Due to these factors, and a looping hodograph, a rogue tornado at this time can not be ruled out entirely with the passage of this system, which will spawn supercells ahead of the approaching cold front.

Monday, April 25, 2011Severe storms still on track for Wed. April 27 Thurs. 28

This past Friday I mentioned “it appears the further north, the stronger these storms will be”, this still appears to be the case for the local area. However … this does not mean the local area will not see strong to severe storms. Models are still showing this system has the potential of damaging winds, hail, and the capability of spawning a tornado.

None of this is set in stone as we are still 48+ hours away from the occurrence of this event. We are right on the fringe as models show areas to the south of the local area having a more stable environment as the front moves closer to the area. This does not mean those areas wont see strong storms. So don’t let your guard down.

One thing the models [that I use] have done as they get a better handle on this system, they show it coming through the local area earlier that previously forecast. It’s looking more likely the worst of the weather will move through the local area late Wednesday afternoon into the evening, clearing the area early Thursday morning. Thats not to say we wont be seeing any severe weather before the front pushes through, or after with the unstable atmosphere around capable of some regeneration.

Tuesday, April 26, 2011Entering Storm Mode for April 27 – Possible Southeast Tornado Outbreak

At this time it still appears the worst of the storms will stay to our north, as mentioned on Monday. That doesn’t mean we are out of the woods. Hopefully we will not see any tornadoes in the local area, but we all know all it takes is strong wind upwards of 50mph to down trees and power lines causing damage to structures. You may know them as straight line winds, or down burst winds.

Our biggest concern tomorrow will be the development of ‘supercells’ capable of producing tornadoes and severe thunderstorms. We will also have to watch for ‘squall line’ development ahead of the cold front the closer it gets to the area. A ‘squall line’ is also capable of spinning up a tornado, along with severe thunderstorms containing heavy precipitation, hail, frequent lightning, and strong straight line winds.

I can not stress the severity of this situation or adequately without fearmongering.

Wednesday, April 27, 2011Update 1 – Live Blogging: Southeast Severe Weather Outbreak 4/27/2011

Original Post – Jumping right in … Already reports this morning out of North Georgia of Widespread Wind Damage, trees down as well as power lines and damage to structures. The worst report at this time:

8:41 AM – “DADE COUNTY EMA RELAYED A REPORT OF POSSIBLE TORNADO DAMAGE IN TRENTON. DADE ELEMENTARY SCHOOL HAD PART OF ITS ROOF LIFTED UP.”

Tornadoes have not been confirmed yet in any of the reports, including the above. We’ll know for sure in a day or two.

The storms that caused the damage in North Georgia is the first round. The Second round will come later today and impact a larger portion of Georgia through tomorrow morning, the local area included. The national weather service has revised the time in which these storms will arrive and depart areas of Georgia.

++++++++

Update: 6:06 PM 4/27/2011 – Just a quick update showing current Weather Warnings, Watches and radar. All of this is moving east and will be affecting the local area later this evening and through the early morning hours.

Severe Weather Warnings as of 5:58 PM EDT
Severe Weather Warnings and Radar as of 5:58 PM EDT

Thursday, April 28, 2011 – at 5:59 PM EDTSevere Weather Outbreak April 27-28 2011 Aftermath

First, let me apologize for not ‘live blogging’ the event. I became overwhelmed by the destruction and death that occurred in Alabama, as the storms headed for Georgia.

Here in the local area, we were not left untouched by the powerful storm system that moved across the nation causing death and destruction. My home county [ Harris Co Georgia ] had what is yet to be confirmed as a tornado move through. Many areas in Georgia felt the wrath, and many on the east coast are still feeling it.

This tornado outbreak will go down in history as one of few that has claimed so my lives. As it stands at this time, it may be ranked as the second most destructive in the past 50 years. In the coming days, it may find itself being placed as number one ahead of the Super Outbreak of 1974.

I’ll be gathering a few videos and links of damage around the local area in the coming day, and post them here on the blog.

For now, heres a couple radar screen captures showing the storms and tornadoes as they headed for, impacted, and left the area.

Preliminary Tornado Tracks in Georgia

Thursday, April 28, 2011 – at 10:06 PM EDTTornado Death toll stands at 292; likely to rise

204 fatalities in Alabama

via: ema.alabama.gov – this is a pdf file

FROM THE OFFICE OF THE ALABAMA EMERGENCY MANAGEMENT AGENCY
FOR IMMEDIATE RELEASE, April 28, 2011, 8pm

Number of weather related fatalities climbs

Clanton – The Alabama Emergency Management Agency has confirmed 204 fatalities in Alabama from
the tornadoes and severe weather yesterday. The fatalities are as follows (listed by county):

Friday, April 29, 2011 – at 3:15 PM EDTStorm Surveys: Georgia Tornado Outbreak April 27-28 2011

Here are a images from the completed Georgia storm surveys from the National Weather Service.
All of this information can be found here- http://www.srh.noaa.gov/ffc/?n=20110427_svrstorms, as well as more text &images, and future updates from storm surveys still being conducted.

Friday, April 29, 2011 – at 10:06 PM EDTApril 27 tornado outbreak storm rotation tracks image

National Severe Storms Laboratory has released an image documenting the rotation tracks of the devastating tornadoes on April 27.

Saturday, April 30, 2011EF2 Tornado Harris County Georgia April 27 Confirmed

A National Weather Service survey team determined that an EF2 tornado with winds of 130 MPH crossed Harris, Meriwether, and Upson Counties Wednesday night.

Path of Tornado

Sunday, May 1, 2011Social Media and Severe Weather

This is one example of why I use this blog, twitter and Facebook[here & here] for reporting / relaying information on extreme weather.

Monday, May 2, 2011Before After Tuscaloosa, Ala. Tornado Aerial Imagery

These are reduced images available via ZIP File from noaanews.noaa.gov in Hi Res. There is also a PDF available at the aforementioned link with Low-Res images.

Georgia Drought Update – April 23 2012

As we begin to move into the Warmer Spring and Hotter Summer months, it’s time once again to monitor the drought situation in Georgia and the south more closely.

Since my last drought update on February 2, the situation in Georgia has not improved. In fact, only 4.39 percent of the state is without drought at this time compared to 14.41 percent 2 months ago.

Due to lack of rainfall this winter we are seeing ‘abnormally dry’ conditions creep back into North Georgia quite early this year. In central and south Georgia drought conditions overall have not improved greatly, except in the southeast corner where a small area is now in ‘severe drought’ down from ‘extreme’.

Here are some rainfall totals for select areas in Georgia from the National Weather Service Peachtree City GA.:

LOCATION   TOTAL RAINFALL    NORMAL    DEPARTURE     PERCENT
LAST 365 DAYS VALUE FROM NORMAL OF NORMAL

ATLANTA 32.93 49.76 -16.83 66%
ATHENS 30.14 46.39 -16.25 65%
COLUMBUS 38.39 46.78 -8.39 82%
MACON 28.66 45.72 -17.06 63%

Across the southeast and the rest of the nation we see some improvement in Texas north to Kansas, while Florida and the northeast remain dry.

The areas in Florida and the northeast this past weekend continuing today in the northeast have seen some much needed rains due to a Low pressure developing in the Gulf of Mexico. The LP moved over areas of the Florida Panhandle and up the east coast where it has joined with another low bringing rains and April snow to the northeast. How much drought relief in these areas is yet to be calculated.

Here is a graphic showing Percentage of Normal precipitation in the Southeast since the beginning of 2012 through April 19 2012. Notice the darker RED shaded areas, which have seen much below normal rainfall since the beginning of 2012.

Here is a graphic showing Departure from Normal Precipitation April 2011 through March 2012. Again, the darker shaded RED areas show area that have seen little rainfall. Some areas are 16 to 20 inches below normal for the lats 12 months.

If all this was not bad enough concerning drought in the higher impacted areas across the U.S., the seasonal drought outlook for April through June of 2012 paints a dry picture, where drought is to persist or intensify.

Concerning the drought situation in the southeast; the National Weather Service / Southeast River Forecast Center released and assessment on April 17 2012. Here’s an excerpt of what was stated in the release. Needless to say, it’s not looking good for the southeast….

National Weather Service
Southeast River Forecast Center
Hydrologic Vulnerability Assessment – Drought
4:00 p.m. Tuesday, April 17, 2012

… Lack of rainfall during the month of March over much of the Southeast has helped to intensify the drought in parts of Alabama and South Carolina, and much of Georgia and Florida …

Typically each year the Southeast usually sees significant improvement in its water resource situation during the month of March. Climatologically, March can produce flooding as well as beneficial recharge to reservoirs, rivers, and groundwater. This has not been a typical year, and therefore, a variety of factors have led to the deterioration of water resource conditions.

Looking Ahead

The forecast for the May, June, and July time frame looks similar to what the Southeast is experiencing now. With no large-scale weather pattern, there is still a great deal of uncertainty in the forecast. With initial conditions being so dire right now, below-normal precipitation would produce significant problems across many of the areas already dealing with drought conditions, causing reservoirs to fall more quickly than in the past. Even normal rainfall will not help conditions significantly. Above-normal rainfall will be needed to improve conditions.

You can read the whole report with graphics here. This is a PDF – http://content.govdelivery.com/attachments/USNWS/2012/04/17/file_attachments/106813/HVA_apr1612.pdf