U.S. experiences warmest 12-month period on record
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
Reader Comments
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Thank you for pointing that out. Fake is now ignored.
sorry if being an irksome blog cop gets annoying, but impersonating to smear is the lowest low i think.
Well, if you listen to the denialists, it's still coming. It just gets pushed back further and further. Bastardi and Corbyn are on the record with extreme global cooling later this year. I don't think that's very likely, especially with El Nino development likely by mid-summer.
* significant weather advisory for...
northeastern Palm Beach County
* until 430 PM EDT
* at 341 PM EDT... National Weather Service meteorologists detected a
strong thunderstorm 9 miles west of North Palm Beach general
Airport... and moving northeast at 30 mph.
* The storm will affect...
North County Airport...
Palm Beach Gardens...
Tequesta...
and surrounding communities.
Frequent to excessive lightning... gusty winds from 45 to 55 mph... up
to nickel-sized hail... torrential downpours... or a combination of
these are possible. Funnel clouds may also develop.
Lightning is the number one weather related killer in Florida.
Trees and open shelters offer no protection. These
winds can down small tree limbs and branches... and blow around
unsecured small objects. Seek shelter in a safe building until the
storm passes.
This storm is developing in an environment favorable for funnel clouds.
The low pressure area begins to develop around 216 hours. It appears to reach tropical depression strength at 264 hours. Tropical storm intensity by 288 hours.
Nice pic!
That's insane.
It's a Quadruple vortex water spout.
OMG.
Is that a BOAT out there, half way to the vortex?
I was just going to ask the same thing
That's not photoshop, there are several pictures of them from earlier today.
Thanks though.
Link
That's insane! Great pictures and thanks for sharing.
Please do us a favor and leave this blog. Not only are you acting like a troll by impersonating another blogger but you are spreading false information by saying this hurricane season will be a bust. How can you even state that when it hasn't began yet?
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN JUAN PR
400 PM AST WED MAY 9 2012
.SYNOPSIS...MID TO UPPER LEVEL TROUGHINESS WILL GENERALLY REMAIN
LOCATED WEST THROUGH NORTH OF THE LOCAL AREA FOR THE NEXT FEW
DAYS. A BROAD INVERTED SURFACE TROUGH EXTENDING NORTH ACROSS THE
NORTHEAST CARIBBEAN...WILL SLOWLY MIGRATE WEST NORTHWEST AND
CONTINUE TO MOVE ACROSS THE LOCAL AREA THE REST OF THIS AFTERNOON
THROUGH FRIDAY...INDUCING A MOIST SURGE ACROSS THE FA.
&&
.DISCUSSION...THE COMBINATION OF AFOREMENTIONED MID TO UPPER
LEVEL TROUGHINESS...SURGE OF MOISTURE AND LOCAL EFFECTS...WILL
RESULT IN A RATHER ACTIVE SPELL OF WEATHER ACROSS THE FA FOR
LATER TONIGHT THROUGH LATE THURSDAY OR EARLY THURSDAY NIGHT.
THEREAFTER...MODELS INDICATE AN AREA OF SOMEWHAT "DRIER" AIR FOR
LATER THURSDAY NIGHT AND FRIDAY...FOLLOWED BY MUCH DRIER AIR FOR
SATURDAY AND SUNDAY...WITH AN ATTEMPT AT MID LEVEL RIDGING. HAVE
NOT COMPLETELY BOUGHT THE MUCH "DRIER" SCENARIO...BUT FEEL THAT
THIS MOST LIKELY TRANSLATES INTO STILL RATHER ACTIVE CONDITIONS
FOR LATER THURSDAY NIGHT AND FRIDAY...BUT NOT QUITE AS BUSY AS
TONIGHT THROUGH THURSDAY AFTERNOON. THEN...MORE LOCALIZED
CLOUDINESS...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS FOR THE
WEEKEND. GIVEN ANTECEDENT WET GROUNDS AND ABOVE NORMAL RIVER
LEVELS IN MANY AREAS...AND THE CONTINUED LIKELIHOOD OF PERIODS OF
HEAVY RAINFALL...THERE REMAINS THE POSSIBILITY OF LOCALIZED FLASH
AND RIVER FLOODING...WITH URBAN AND SMALL STREAM FLOODING MORE
PREVALENT.
&&
.AVIATION...SHOWERS AND THUNDERSTORMS WILL AFFECT MOSTLY THE
VICINITY OF TJMZ AND TJBQ UNTIL 09/23Z WITH A FEW SHOWERS
AFFECTING THE TAF SITE. AFTER 09/23Z...EXPECT MOSTLY VFR
CONDITIONS ACROSS ALL OF THE LOCAL TERMINALS WITH CLOUDINESS AND
SHOWER ACTIVITY INCREASING IN AND AROUND TISX AND TKPK FOR TONIGHT
CAUSING POSSIBLE MVFR CONDITIONS. WINDS WILL BE MOSTLY FROM THE
EAST SOUTHEAST AT ABOUT 10 TO 15 KNOTS.
&&
.MARINE...GENERALLY EXPECT WINDS OF 17 KNOTS OR LESS AND SEAS OF
5 FEET OR LESS ACROSS THE REGIONAL WATERS THROUGH AT LEAST FRIDAY.
&&
.PRELIMINARY POINT TEMPS/POPS...
SJU 77 86 77 86 / 40 70 50 50
STT 76 86 77 85 / 50 60 60 60
Didnt we have El Nino in 2004? One of the most devastating years of the 2000s. For FL at least.
Posts like these are the reason i dont even bother with WU anymore.
LAC051-057-092045-
/O.NEW.KLIX.TO.W.0039.120509T2019Z-120509T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NEW ORLEANS LA
319 PM CDT WED MAY 9 2012
THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A
* TORNADO WARNING FOR...
EXTREME SOUTHEASTERN JEFFERSON PARISH IN SOUTHEAST LOUISIANA...
* UNTIL 345 PM CDT
* AT 312 PM CDT...NOAA NOS EMPLOYEE ON GRAND ISLE REPORTED A FUNNEL
CLOUD OVER CENTRAL GRAND ISLE...MOVING SOUTHEAST AT 15 MPH.
* THE TORNADO WILL OTHERWISE IMPACT MAINLY RURAL AREAS OF THE
INDICATED PARISHES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS FUNNEL CLOUD WILL LIKELY EXTEND TO THE GROUND OVER GRAND ISLE
AND CONTINUE TO MOVE OFFSHORE AS A WATERSPOUT SOUTH OF THE ISLAND.
TAKE COVER IMMEDIATELY IF YOU ARE ON GRAND ISLE.
&&
LAT...LON 2920 9012 2925 9009 2922 9006 2925 8999
2927 8999 2929 9001 2925 9005 2925 9008
2926 9008 2931 9003 2929 8999 2935 9000
2932 8996 2928 8995 2930 8993 2929 8992
2917 9007
TIME...MOT...LOC 2017Z 299DEG 31KT 2921 8996
$$
24/RR
You are correct. It is funny that a little while ago he made a comment about the trolls are out. He needs to look in the mirror.
You know its getting to be that time when all the trolls start coming out. Despite having to work your way through a multitude of troll posts, Weather Underground is a good place to be during the hurricane season.
Your input, as well as everybody elses, is highly valued here.
FLC086-092045-
/O.NEW.KMFL.SV.W.0012.120509T2005Z-120509T2045Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
405 PM EDT WED MAY 9 2012
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EXTREME NORTHEASTERN MIAMI-DADE COUNTY IN SOUTH FLORIDA.
* UNTIL 445 PM EDT
* AT 403 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED NEAR MIAMI BEACH...AND MOVING
EAST AT 15 MPH.
* THE STORM WILL AFFECT...
MIAMI BEACH...
AND SURROUNDING COMMUNITIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS CAN PRODUCE VERY STRONG WINDS IN EXCESS OF 58
MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
&&
LAT...LON 2576 8013 2573 8014 2567 8015 2566 8016
2568 8018 2573 8017 2574 8018 2577 8015
2580 8015 2584 8014 2585 8016 2588 8015
2588 8016 2590 8012 2585 8011
TIME...MOT...LOC 2005Z 263DEG 12KT 2581 8012
$$
60
It's been pouring over here on the northside of orlando. Atleast the lightning isn't like it was about 45 minutes ago.
So you have made 6 comments on this blog and not one of them are of any value.
Thank WU for the ingore feature because you are now on mine.
BTW, great forecast by telling us to expect the rainy season in FL soon. That is like telling the folks in in October who live in Aspen to expect the snow season to start soon.
There already is one for non-paying members...12 hours.
It'd be effective for trolls but would probably drive away new members considering they would have to wait that long to post.
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