U.S. experiences warmest 12-month period on record

By: Dr. Jeff Masters , 6:09 PM GMT on May 08, 2012

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The past twelve months were the warmest twelve months in U.S. history, said NOAA's National Climatic Data Center (NCDC) on Tuesday, in their monthly "State of the Climate" report. Temperatures in the contiguous U.S. during May 2011 - April 2012 broke the previous record for warmest 12-month period, set November 1999 - October 2000, by 0.1°F. The past twelve months have featured America's 2nd warmest summer, 4th warmest winter, and warmest March on record. Twenty-two states were record warm for the 12-month period, and an additional nineteen states were top ten warm. NOAA said that the January - April 2012 period was also the warmest January - April period since record keeping began in 1895. The average temperature of 45.4°F during January - April 2012 was 5.4°F above the 20th century average for the period, and smashed the previous record set in 2006 by an unusually large margin--1.6°F.


Figure 1. The ten warmest 12-month periods in the contiguous U.S. since record keeping began in 1895. Image credit: NOAA/NCDC.


Figure 2. The average temperature of 45.4°F during January - April 2012 was the warmest on record: 5.4°F above the 20th century average for the period, and was 1.6°F above the previous record set in 2006. January - April temperatures have been rising at about 1.9°F per century since 1895. Image credit: NOAA/NCDC.

April 2012: 3rd warmest on record
April 2012 was the third warmest April in the contiguous U.S. since record keeping began in 1895. Ten states had a top-ten warmest April, and no states were cooler than average. But what's really remarkable about April was that eight states--Illinois, Indiana, Kentucky, Michigan, Wisconsin, Ohio, Pennsylvania, and West Virginia--had average April temperatures cooler than their March temperatures, even though their April temperatures were still above the long-term average for the month. These statistics show just how remarkably warm March 2012 was. Most extreme was Illinois, where April 2012 temperatures ranked in the top 20% for warmest Aprils, yet were cooler than March 2012 temperatures.


Figure 3. Temperature rankings for April 2012 in the Contiguous U.S. Ten states had a top-ten warmest April, and no states were cooler than average. Image credit: NOAA/NCDC.


Figure 4. NOAA's U.S. Climate Extremes Index (CEI) for January - April shows that 2012 had the most extreme weather on record.

Most extreme January - April on record
NOAA's U.S. Climate Extremes Index (CEI), an index that tracks the highest 10 percent and lowest 10 percent of extremes in temperature, precipitation, and drought, was 42% during the January-April period, over twice the average value, and the greatest on record. Remarkably, 82% of the contiguous U.S. had maximum temperatures that were in the warmest 10% historically, and 68% had warm minimum temperatures in the top 10%, with records going back to 1910. The previous records were 56% (2000) and 57% (1992) for maximum and minimum temperatures, respectively. The percentage area of the U.S. experiencing top-10% drought conditions during January - April was 19%, which was the 17th greatest since 1910. Extremes in precipitation as computed by the CEI were near average for the January - April period.

Jeff Masters

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1183. Patrap
Double waterspout in Grand Isle, tornado damage reported: Video







The National Weather Service says a waterspout hit land on Grand Isle Monday afternoon and damaged a path about a quarter mile long and 400 feet wide Wednesday afternoon.

Once a waterspout hits land, it is deemed a tornado. Two waterspouts were sighted, however, only one crossed onto land. The tornado crossed the island and dissipated into the Gulf of Mexico.

The area hit was around Boudreaux Lane in Grand Isle, where officials said debris was on the roadway and several light poles were knocked down, officials told New Orleans television station WWL-TV.

According to the National Weather Service, shortly before 3 p.m., trained weather spotters reported a tornado on the west side of Grand Isle, moving southeast at 15 mph.

Mayor David Camardelle told WWL-TV power out is for the entire island and there was extensive damage in the area around Raspberry and Boudreaux lanes off of La. Hwy. 1. In all, seven properties were damaged.

Copyright 2012 WAFB. All rights reserved.

Member Since: July 3, 2005 Posts: 426 Comments: 129089
Well there's something you don't see every day.

M3.7 - 2km W of Timpson, Texas 2012-05-10 15:15:38 UTC

Summary
Location and Magnitude contributed by: USGS National Earthquake Information Center
General

Texas
31.901°N, 94.422°W
Depth: 5.0km

Texas
31.901°N, 94.422°W
Depth: 5.0km
Toggle Map Size
Event Time

2012-05-10 15:15:38 UTC
2012-05-10 10:15:38 UTC-05:00 at epicenter
2012-05-10 10:15:38 UTC-05:00 system time

Nearby Cities

2km (1mi) W from Timpson, Texas
39km (24mi) NNE from Nacogdoches, Texas
45km (27mi) SE from Henderson, Texas
68km (42mi) NNE from Lufkin, Texas
350km (217mi) WNW from Baton Rouge, Louisiana



Member Since: Posts: Comments:
1181. nigel20
Eastern East Pacific

Eastern Atlantic
Member Since: November 6, 2010 Posts: 11 Comments: 8314
Quoting RitaEvac:


You're now included in Severe Thunderstorm Watch
Tornado Warnings for Southeast and South of San Antonio, they have had severe weather all morning with tornado warnings and large hail in that areas.
Member Since: Posts: Comments:
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
112 PM CDT THU MAY 10 2012

TXC311-101845-
/O.CON.KCRP.TO.W.0018.000000T0000Z-120510T1845Z/
MCMULLEN-
112 PM CDT THU MAY 10 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR
NORTHEASTERN MCMULLEN COUNTY...

AT 111 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LARGE AND DAMAGING TORNADO JUST EAST OF TILDEN...MOVING
NORTHEAST AT 30 MPH. PLEASE TAKE COVER NOW!

* LOCATIONS IMPACTED INCLUDE...
CROWTHER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS
STORM IS CAPABLE OF PRODUCING STRONG TO VIOLENT TORNADOES. IF YOU ARE
IN THE PATH OF THIS TORNADO...TAKE COVER IMMEDIATELY!

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT THURSDAY EVENING
FOR SOUTH TEXAS.
Member Since: Posts: Comments:
1178. nigel20
Quoting DDR:

Hey i'm good,extremely wet especially the northern interior,yea we are about 600-800 percent above average,March and April were like June and July,this month you guessed it like August.

Yeah, I know that JJA is generally the peak of the rainy season in Trinidad, as the ITCZ moves northward...you could have a very long rainy season this year.
Member Since: November 6, 2010 Posts: 11 Comments: 8314
1177. DDR
Quoting Tropicsweatherpr:


Hi to both fellow Caribbean friends. It has been a wet Eastern Caribbean in general during the past week an a half to two weeks Puerto Rico has been thru rainy episodes with flooding events during this period. Here is information from Guadeloupe.

Link

Thanks Tropics
I heard that in one of the islands their major Dam is overflowing,i can't remember which island though.Got to run,peace!
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1176. nigel20
Quoting sunlinepr:

Some significant wave heights just below my location
Member Since: November 6, 2010 Posts: 11 Comments: 8314
1175. DDR
Quoting nigel20:

What's up DDR? Very wet over there in Trinidad.

Hey i'm good,extremely wet especially the northern interior,yea we are about 600-800 percent above average,March and April were like June and July,this month you guessed it like August.
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Speaking of DOOM... does anyone have the original list of what each DOOMCON level means?
Member Since: August 3, 2008 Posts: 16 Comments: 5890
Quoting aspectre:
Drats! Archeologists have discovered a room in a ruin in which Mayan scribes used the walls as a "blackboard" to calculate future astronomical positions of the Sun, Moon, and visible planets against the starscape. Unfortunately those calculations include positions up to 6000years into the future, totally kiboshing all plans to hold an End of Days later this year.


Well of course.....the sun,moon, and planets in space will still be there after 2012
Member Since: Posts: Comments:
Quoting DDR:

Hi pottery good to see you as well.Real crazy weather lately,have you ever seen it like this?


Hi to both fellow Caribbean friends. It has been a wet Eastern Caribbean in general during the past week an a half to two weeks Puerto Rico has been thru rainy episodes with flooding events during this period. Here is information from Guadeloupe.

Link
Member Since: April 29, 2009 Posts: 75 Comments: 14551
What if the GFS shifted it westward? Then the DOOM would shift from Florida to NOLA. I'd hate to see NOLA get any more bad weather.

P.S. Am I too new to say DOOM? If so I'm sorry.
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Quoting GeorgiaStormz:
i see 60k foot tops on the TX storms.
Nice.

Might also be a debris ball:

Not a debris ball. There was some lower-level rotation with the storm, but the apparent debris ball is another storm merging into it. You can see it develop just to the SE of the "hook", and grow/stream into the larger storm.
Member Since: August 3, 2008 Posts: 16 Comments: 5890
Quoting bohonkweatherman:
I agree with you, raining pretty good here now, Lake Travis area received 4 inches of rain last Saturday night but Lake only went up a few inches, just shows you how dry it was. This system looks very impressive on satellite just south of El Paso.


You're now included in Severe Thunderstorm Watch
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Drats!
Archeologists have discovered a room in a Mayan ruin in which scribes used the walls as a blackboard to calculate future astronomical positions of the Sun, Moon, and visible planets against the starscape.
Unfortunately those calculations include positions up to 6000years into the future, totally kiboshing all plans to hold an End of Days later this year.
Member Since: August 21, 2007 Posts: 0 Comments: 4860
I'm hoping the GFS does verify however, wishcasting if you will, because this would be a great drought buster for Florida, which is in a bad drought.
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1165. nigel20
Quoting DDR:
Good afternoon
This is probably the wettest May on record in Trinidad,i have recorded over 10 inches of rain in the past 10 days.Just imagine the monthly average is just 4 inches.

What's up DDR? Very wet over there in Trinidad.
Member Since: November 6, 2010 Posts: 11 Comments: 8314
Yikes! some nasty hooks with these S TX cells.

Member Since: October 26, 2011 Posts: 0 Comments: 2651
Quoting StormTracker2K:


Ok I stand corrected.

don;t worry bout it we do that all the time
Member Since: June 13, 2009 Posts: 2 Comments: 12376
Quoting wunderkidcayman:

no wrong it is the first time for it to go gulf bound but yes you are right it is not the first time it is to go to S Fl yesterday the run took it over W-central cuba after that making it way to S Fl so
fist time for gulf bound
not first time for S Flbound


Ok I stand corrected.
Member Since: October 26, 2011 Posts: 0 Comments: 2651
1161. DDR
Quoting pottery:

Good to see you DDR.
Thunder and Heavy stuff here this morning. AGAIN !

Hi pottery good to see you as well.Real crazy weather lately,have you ever seen it like this?
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Quoting unf97:
StormTracker2k (post 1142), this is exactly the set-up we need up here in north Florida to put a major dent in the severe drought conditions in this region. All I want is for a TD or weak TS to scome into the Eastern GOM and move slow to bring some relief to the parched areas of the peninsula.

This is still 10-12 days out, so I won't get to hyped about these model runs yet. But, if some consistency with the model runs continue over the next 5 days or so, then my interest will start to get brewing for sure.


Yeah this would be great for sure!
Member Since: October 26, 2011 Posts: 0 Comments: 2651
Quoting BobWallace:


I suspect it to be political more than anything else.

If you belong to the 'team of the right' then you must support your team, declare that you've got the best quarterback ever even when the guy can't throw more than 20 yards.

To be a good team member you've got to deny climate change and, in general, say stupid things because that's your self-assigned role.

Facts presented by the other side must be dismissed and ignored. That's how the game is played.


I usually do not even give a second thought about politics. It is absolutely absurd that this is even happening. A debate based on beliefs is logical (but also never-ending) because, obviously, not everyone has the same beliefs. However - when discussing climate change - the "team of the right" as you mentioned, shouldn't even exist. They have absolutely no real power. No facts, no truths, nothing. Why are they even there? Money? So they have false power. I'm now venturing into something that is impossible to comprehend. To me, it's inconceivable how money can be allowed to get in the way of climate change when our very survival is on the table. We need to start voting for politicians who will truthfully put the planet's goals ahead of theirs - and even their own countries.
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Quoting StormTracker2K:


It's actually not the first time. One run yesterday had it going across S FL. I agree though expect lots of fluctuations over the coming days and heck this may never turn out. It could just be tropical rains streaming north toward the gulf and merge with this ULL over the C or E Gulf.

no wrong it is the first time for it to go gulf bound but yes you are right it is not the first time it is to go to S Fl yesterday the run took it over W-central cuba after that making it way to S Fl so
fist time for gulf bound
not first time for S Flbound
Member Since: June 13, 2009 Posts: 2 Comments: 12376
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1236 PM CDT THU MAY 10 2012


UPDATE...
MORNING FORECAST UPDATE.

DISCUSSION...
UPPER LOW CONTINUES TO CHURN AWAY IN THE S ROCKIES NEAR EL PASO
THIS MORNING AND GETTING DEEP CONVECTION ALL THROUGH THE NORTHERN
PORTIONS OF THE RIO GRANDE VALLEY INTO W TX. WEAK SFC LOW WAS
LOCATED OVER THE EDWARDS PLATEAU WITH A WARM FRONT STRETCHING FROM
NEAR JUNCTION TO GALVESTON THIS MORNING. WARM FRONT SHOULD SLOWLY
MOVE NORTHWARD THIS AFTERNOON SO INCREASED POPS A TOUCH FOR ISO
ACTIVITY ALONG THE WARM FRONT. THINK INITIAL CONVECTIVE ACTIVITY
WILL APPROACH WESTERN PORTIONS OF SE TX INTO THE BRAZOS VALLEY
LATE THIS AFTERNOON AND EVENING. THE MAIN SHOW LOOKS TO BE ON
TRACK FOR LATE TONIGHT FRI MORNING AS EXPECTING ORGANIZED
CONVECTION TO MOVE INTO THE AREA BY 12Z FRI. FLASH FLOOD THREAT
WILL BE MARGINAL FOR MUCH OF THE AREA BUT STILL CONCERNED FOR
AREAS MAINLY SOUTH OF A BRENHAM...THE WOODLANDS...BEAUMONT LINE.
THINK THIS WILL BE THE AREA FOR HIGHEST QPF ALTHOUGH AREAS NORTH
OF THAT LINE MAY STILL HAVE SIGNIFICANT RAINFALL BUT HAVE NOT HAD
MUCH IN THE WAY OF RECENT RAINFALL. WILL CONTINUE TO EVALUATE 12Z
MODEL GUIDANCE AND LOOK FOR POSSIBILITY OF FLASH FLOOD WATCH
LATER THIS AFTERNOON.
Member Since: Posts: Comments:
1156. pottery
Quoting DDR:
Good afternoon
This is probably the wettest May on record in Trinidad,i have over 250 mm or 10+inches.This has fallen in the past 10 days.Just imagine the monthly average is just 4 inches.

Good to see you DDR.
Thunder and Heavy stuff here this morning. AGAIN !
Member Since: Posts: Comments:
Quoting wunderkidcayman:
from 12Z twd carib section

HIGH MOISTURE
VALUES ARE EXPECTED TO REMAIN OVER THE ERN CARIBBEAN AND
GRADUALLY SHIFT WWD OVER THE NEXT SEVERAL DAYS.

this is what will help the gfs system to to come to reallity


That could be out ignitor.

Member Since: October 26, 2011 Posts: 0 Comments: 2651
Quoting RitaEvac:


You have much more to go, get ready
I agree with you, raining pretty good here now, Lake Travis area received 4 inches of rain last Saturday night but Lake only went up a few inches, just shows you how dry it was. This system looks very impressive on satellite just south of El Paso.
Member Since: Posts: Comments:
1153. LargoFl
Member Since: August 6, 2011 Posts: 4 Comments: 40845
Quoting LargoFl:
Would be wonderful if it just sat out there, dumping its rain on us for a few days


Yeah but usually when the GFS shows this in the long range it never happens. Like I said it could just be tropical moisture merging with a trough in the eastern Gulf. Either way though this could end up being a very wet end of May here in FL. Similar to May 2009 if you ask me.
Member Since: October 26, 2011 Posts: 0 Comments: 2651
1151. DDR
Good afternoon
This is probably the wettest May on record in Trinidad,i have recorded over 10 inches of rain in the past 10 days.Just imagine the monthly average is just 4 inches.
Member Since: Posts: Comments:
1150. unf97
StormTracker2k (post 1142), this is exactly the set-up we need up here in north Florida to put a major dent in the severe drought conditions in this region. All I want is for a TD or weak TS to scome into the Eastern GOM and move slow to bring some relief to the parched areas of the peninsula.

This is still 10-12 days out, so I won't get too hyped about these model runs yet. But, if some consistency with the model runs continue over the next 5 days or so, then my interest will start to get brewing for sure.
Member Since: Posts: Comments:
1149. LargoFl
Member Since: August 6, 2011 Posts: 4 Comments: 40845
from 12Z twd carib section

HIGH MOISTURE
VALUES ARE EXPECTED TO REMAIN OVER THE ERN CARIBBEAN AND
GRADUALLY SHIFT WWD OVER THE NEXT SEVERAL DAYS.

this is what will help the gfs system to to come to reallity
Member Since: June 13, 2009 Posts: 2 Comments: 12376
Quoting wunderkidcayman:
as I said this is the first time for this forecasted system to move gulf bound wait for the next few runs to really determine if gfs has really changed to gom bound


It's actually not the first time. One run yesterday had it going across S FL. I agree though expect lots of fluctuations over the coming days and heck this may never turn out. It could just be tropical rains streaming north toward the gulf and merge with this ULL over the C or E Gulf.
Member Since: October 26, 2011 Posts: 0 Comments: 2651
1146. LargoFl
Quoting StormTracker2K:
Man the Tampa Shields!

Would be wonderful if it just sat out there, dumping its rain on us for a few days
Member Since: August 6, 2011 Posts: 4 Comments: 40845
i see 60k foot tops on the TX storms.
Nice.

Might also be a debris ball:
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as I said this is the first time for this forecasted system to move gulf bound wait for the next few runs to really determine if gfs has really changed to gom bound
Member Since: June 13, 2009 Posts: 2 Comments: 12376
OMG FLORIDA STORM ON THE LONG RANGE!!!

RAISE THE DOOM CON!!!
BUY PLYWOOD, MILK, BREAD, AND WATER!!!
RESTOCK FRESCA!!!
MANDATORY EVACUATIONS!!!

SARCASM FLAG: ON
Member Since: Posts: Comments:
Looks like this tropical energy in the Caribbean will merge with this upper level energy that's over TX now late next week and start moving north toward FL. This could very well pan out.

This is day 10 and you can see what appears to be a cut off low developing.


As a result of the cut off that tropical moisture (maybe Alberto) comes north into the eastern Gulf.
Member Since: October 26, 2011 Posts: 0 Comments: 2651

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Quoting hydrus:
GFS is definitely interesting to look at..


in the same way water boarding can be said to be 'interesting'
Member Since: August 13, 2007 Posts: 0 Comments: 10492
1139. nigel20
Quoting wunderkidcayman:

hey yeah i'm good
recovery well I haven't heard anything for a long time about it

some how I don't think that it will really be gulf bound for the past I don't know how may runs it has been ever so consistent with tracking it from Hon/Nic coast moves N turns NE to the Caymans then to W-Central Cuba the NW Bahamas

You could be right, but lets see if the forecast pans out
Member Since: November 6, 2010 Posts: 11 Comments: 8314
re: #1108, apparently we have some FEROCIOUS shower curtains deployed here in SW Florida. I wouldn't wager too much money on that GFS scenario playing out as depicted ....

On the other hand, it actually RAINED here last night!!!! (Hey, it was for less than 10 minutes, but after the last six months' weather, that was GREAT!!)
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1137. KEEPEROFTHEGATE (Mod)
Quoting nigel20:

The atlantic is warming quite steadily
warming faster than expected
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1135. hydrus
GFS is definitely interesting to look at..
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Quoting nigel20:

What's up wunderkid...how's the recovery in Little Cayman and Cayman Brac following Paloma 2008?

hey yeah i'm good
recovery well I haven't heard anything for a long time about it
Quoting nigel20:


It's now gulf bound

some how I don't think that it will really be gulf bound for the past I don't know how may runs it has been ever so consistent with tracking it from Hon/Nic coast moves N turns NE to the Caymans then to W-Central Cuba the NW Bahamas
Member Since: June 13, 2009 Posts: 2 Comments: 12376

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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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