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The Tornado Damage Scale In Images | OurAmazingPlanet.com
Heart Attack Deaths Spike in Winter - ABC News
Tropical rainfall patterns varied through time
HIPPO Data (Atmospheric Gas And Aerosol Study) Now Available
WEATHER HAZARDS (During The Next 24 Hours)
SEVERE WEATHER OUTLOOK
(potential for tornadoes, damaging winds, and large hail within the next 24 hours)ISOLATED Severe Thunderstorms
(Microbursts, Large Hail, Isolated Tornadoes)
E TX....LA....AR....C, E MO....IL....IN....W, C KY....W, C TN....W, C AL....MS
STRONG WINDS
(Pressure Gradient Derived)
MI....WI....N, C MN....W ON....S MB....ND....SD....NE
STRONG WINDS
(Pressure Gradient Derived)
NL (Newfoundland Island)
HEAVY RAINFALL OUTLOOK
(potential for an inch or more total rainfall within the next 24 hours)
Scattered Locations In
E TX....LA....AR....C, E MO....IL....IN....W, C KY....W, C TN....W, C AL....MS
(QPF 1 - 3")
WINTER WEATHER OUTLOOK
(potential for maximum temperatures below 25 deg F within the next 24 hours; snowfall in excess of 4 inches over a 24 hour period; or other frozen precipitation exceeding trace amounts)
Scattered Locations In
NL (Newfoundland Island)
(Snow; Blizzard; 4 - 16")
Scattered Locations In
NE CO....E WY....E MT....SE SK....S MB....W ON....Upper MI....extreme NW WI
N, C MN....ND....SD....W, C NE
(Snow; Blizzard; 4 - 16")
Isolated Locations In
NV....N AZ....NW NM....W CO....UT....SE ID....MT....W, C WY
(Snow; 4 - 12")
GLOBAL WEATHER SUMMARY
(a review of important weather features around the world)
IODC
Dundee University
The IODC satellite view shows three important features critical to weather forecasting. One is the expansion of convection through the Indian Ocean theater, which tells us that predictions of the Madden-Julian Oscillation coming into "Phase 8" (and with bringing hope to those wanting cold weather in the eastern two-thirds of the U.S.) will not verify (the MJO is incoherent but active). Another is the intense tropical wave below Sumatra. This feature will likely restore threats for severe thunderstorms,extremely heavy rain and flooding through portions of Malaysia and Indonesia as it lurches eastward. Third, it needs to be pointed out that cold air signatures on the infrared satellite spectrum are still very dominant across all of Russia, the Central Asian Republics and western China. Therefore, another rogue snow and Arctic intrusion for the orient should not be ruled out.
MTSAT
Digital Typhoon
The powerful winter storm southwest of the Aleutian Islands brought unusually heavy snowfall to the central and northern portions of Japan, and may help to pump up warmth/heights across Alaska and the Arctic Ocean during the next week or two. Notice, however, that linkage of the tropical convection fields to the polar westerlies is very tepid, and the MJO is not likely to be a factor in promoting cold advection into the lower 48 states through the remainder of February. The vaunted heat ridge over Australia is breaking down; note the thunderstorms scattered across the northern half of the continent.
GOES WEST
NASA
While there is a subtropical jet stream on view over the lower latitudes of the northern Pacific Ocean, there are still no real signs of a contribution from convective areas to the polar westerlies. Hence this is a progressive 500MB longwave pattern, NOT a blocking type, and cold intrusions with the amplified troughs and shortwaves into the U.S. are unlikely to last very long. That said, the remainder of February and March will be quite stormy, with severe weather/heavy rainfall an increasing threat from higher dewpoint fields and mesoscale disturbances emerging from west of Mexico.
GOES EAST
NASA
You cannot miss the monster New England blizzard as it drifts off toward Newfoundland, replete with a classic eye structure common to intense cold-core mid-latitude cyclones in the mature stage. Note the trough expanding through western North America, with the Arctic cold dome expanding south and west from Canada. This southern hemisphere summer has been characterized by very impressive heat ridge formations across Chile and Argentina, with broad and intense tropical waves constantly linking with frontal structures traversing Brazil (hence the widespread heavy rainfall and thunder across the nation). Incredibly, in February, an ITCZ wave will impact the eastern leg of the Amazon Basin shortly!
METEOSAT
SMHI
The character of weather across Europe seems to be milder outside of Russia. The menacing storm complex near Iceland is drawing up warm advection from the Mediterranean Sea. But showers and thunderstorms are expanding across the European Union, and the meeting of cold and moist will allow for significant snow fall in Poland and the Ukraine into the Ural Mountains.
You can make out the now-faint signature of the subtropical jet stream across the Sahara Desert. Moisture remains concentrated in the equatorial regions and has begun to build across South Africa and Zambia. The westward building and motion of convection is another possible hint at an active, and early, tropical cyclone season in the Atlantic Basin in coming months.
SHORT RANGE OUTLOOK
(Through The Next 72 Hours)
After The "Great New England Blizzard Of 2013", Strong Warm-Up Indicated As Intense Midwest Storm Triggers Severe Weather And Heavy Rains From Lower Great Plains To The East Coast
NOAA/NWS
NASA (2)
Plymouth State University Weather Server (2)
University Of Wisconsin Weather Server (2)
TwisterData.Com (2)
WEATHERAmerica
The powerful blizzard that struck New England is now fading into history (tracking toward Newfoundland). The incredible snow cover left behind by this storm (which, by the way, never had a sustained tropical connection but had awesome upper dynamics in play) will likely fall victim to warm advection processes over the next 72 hours, largely as a result of another impressive mid-latitude cyclone moving through the Upper Midwest into the Great Lakes and Quebec. Even with extensive melting snow, temperatures in CT....RI and MA may make a run at 50 degrees (F) before a cold frontal passage settles in on Tuesday night.
As for the deep, broad low pressure in the center of the U.S., this feature may have broader impacts than the system which affected the Northeast. Heavy to severe thunderstorms will expand out of the lower Great Plains through the Ohio Valley and Old South (possibly involving the Mid-Atlantic region. One limiting factor: instability within the warm sector appears to be marginal. The potent dynamics aloft, however, are supportive of calls for impressive convection in association with the frontal passages. Strong winds with heavy snowfall and areas of sleet and freezing rain are likely to harass the north central states, with ground blizzards followed by a wave of intense (though short-lived) Arctic cold into much of the national heartland and the Intermountain Region.
"Hang Back" Cold Trough Over The Intermountain Produces New Storm In Texas By Tuesday
NASA
ECMWF
University Of Wisconsin Weather Server
TwisterData.Com
NOAA/NCEP
There are actually two separate components to the broad 500MB trough now edging out of the western states. A portion of the trough complex is expected to "hang back" across the Desert and Intermountain Regions. Besides bringing unusually cold air into the Southwest and across northern Mexico, the parcel of vorticity and cold/unstable air will slowly eject into Texas by Tuesday morning, instigating wave cyclogenesis on a trailing frontal structure along the western Gulf Coast. For that reason, another round of heavy rainfall and strong thunderstorms is likely along the Interstate 10 corridor, expanding quickly through the Deep South into the Carolinas
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