Argentina Severe Weather Outbreak Possible in Next 18hrs< cal. from 18:00 GMT

METD Int
Argentina

concerning for severe weather

The GFS forecast shows that a massive mid range trough is just off the
shore of Chile.
This trough is a good which can create many things
The first feature will be it will not be a zonal flow that is the
trough digs in argentina-chile border.The jet at present is situated
behind it and will move to areas near Catamarca,Ar and interestingly
the pressure is expected to be 990mb only. in next 18hrs
THIS MEANS IT IS INTENSE LOW PRESSURE SYSTEM.
The jet will be near catamarca and as there will be availability of
CAPE chance of severe weather outbreak increases.Also Humidity will be
present which helps in strengthining of thunderstorm. I don't have any
update on HELICITY as There are no models within my range showing
them.
This system will cause heavy rains as well in there areas. Tornado
chances might be there as everything is good.....

another powerful system is digging in slowly in the outlook of RIDGE
for N.hemisphere but is actually a trough as i always say.
This is to the very south of argentina near puerto natales,CHILE.
This is weaker than the one mentioned above as the central pressure
would be 996mb
But this is unfavourable as the position would be in lower 40s. The
temperatures there are low and dewpoint is less. so we can just expect
rains and no thunderstorm

So METD now aims to catch the action from the system of pressure
gradient 990mb which knocks very soon in argentina-chile border.
It will be exciting to see what a system of 990mb does as last day a
system of 996mb created supercells!!!!

Stay tuned for updates only on METD Int

METD
Akshay

METD STARTS TRACKING ARGENTINA WEATHER

METD Hq,

 

With the already onset of tornadoes with hails in southern hemisphere, TVN's Reed Timmer my teacher in this field has set out to Argentina to catch tornadoes. Likewise METD also desires to catch the science of tornadoes in southern hemisphere on internet.

SO we have decided that We will track argentinas weather and inform you about Severe WEather outbreaks.

Argentina is famous for tornadoes as We have Tornado alley in usa.This is a peak time for tornadoes like we have april-may in USA.

 

AS on the prelimenary track day,WE have discovered that Argentina today was subjected to Low pressure.

The pressure over North-eastern and south western argentina was low to 998mb but it was higher in north of the country to 1007mb apx.

There has been clouds since last few hours and they have warm core<thunderstorm core> but now it looks it has lost it.

Though the GFS forecasting for severe weather in argentina looks good we dont have someone to tell the RUC model and also to provide datas like twisterdata.com does. I have found some links which can help us to track. But still would be challenging.......

 

encl- CLouds over argentina and pressure of 996mb in southern argentina

 

For akshay's gyaan readers I am sorry I am unable to give time but you can see the discussions on facebook.com/astrophysics

we have opened a Facebook METD weather fan page face

 

http://www.facebook.com/pages/METD-WEATHER/375172700693?ref=mf#/pages/METD-WEATHER/375172700693

 

you can get to see all actions right here

 

I WILL BE BACK ON AKSHAY'S GYAAN WITH SOME NEW IDEA VERY SOON

TILL THEN HAPPY HOLIDAYS AND HAPPY NEW YEAR

Akshay

Blizzard warning once more in Northern USA after Getting to Oklahoma and Tornado watches

METD WEATHER,USA
Akshay Deoras,LEAD Weather investigator

Yesterday there was a severe weather outbreak in USA as whole.
First there were record breaking tornadoes in southern side in
Lousiana. A total of 25 tornadoes happened in 2 days and they were
quite destructive.
At present 300mb forecast shows intense jets of 100 knots which will
progress as the day progresses to the south. This system will settle
over Dakotas and will bring heavy snow, Also Heavy winds 35-45mph and
low visibility will add to blizzard conditions and NWS has already
issued BLIZZARD WARNING.

snow depth model which has been newly introduced on twisterdata.com (c) TVN
shows that within 24 hours more than 24" of snow is likely to be
accumulated in parts of WIsconsin and will be 8-15" in south dakota.

BLizzard warnings have been issued for North-south
Dakota,Nebraska,North-east Kansas.

At the same time, NWS has issued tornado watches for Florida,South
carolina,Georgia.
Tornado watches are no. 810,811.
Tornadoes will happen very soon probably in next 5 hours at the warned areas.
For Blizzard in Oklahoma,
The blizzard produced impressive snow totals of 4 to 10 inches from
Amarillo to Wichita Falls to northwest Dallas to 12 to 15 inches
across southwest to central Oklahoma.
These snow totals smashed existing records for northwest Texas to
Oklahoma City with a white Christmas now guaranteed.
The heavy snow will be accompanied by winds gusting in excess of 50
miles per hour creating whiteout conditions throughout the Central and
Northern Plains through the day today.
Freezing rain will result starting this morning in western North
Carolina and southwest Virginia expanding northward into the interior
portions of the Northeast today.
As the day moves forward, rain will invade the eastern portions of the
Mid-Atlantic reaching Southeast New York by this afternoon.
The rain is expected to come down moderately to heavy at times
combining with melting snow to produce localized flooding problems
from Washington D.C. to New York city tonight into Saturday.
Saturday, the change from wintry mix to freezing rain to rain will
continue northward across the remainder of Upstate New York and New
England.

Latest report from Silver spring is showing 0 deg celcius and freezing
rains are due there from 10 am EST also there w'd be winds upto 35mph
there.
Keep tracking METD for details

DECEMBER IS DEFINATELY HISTORIC FOR WEATHER

CAN BE ANOTHER HISTORIC DAY IN USA WITH REFRENCE TO WEATHER.TORNADO CHANCES NOW MODERATE

METD WEATHER

ALERT FOR SEVERE STORMS CAPABLE OF PRODUCING TORNADOES

AT PRESENT SPC HAS SHIFTED TO MODERATE RISK FOR SEVERE STORMS.

THIS LOW PRESSURE SYSTEM INDEED IS A BIG ONE AS THE AIR PRESSURE CENTERED OVER NORTH-EAST OKLAHOMA IS OVER 996mb. 

Intense low pressure jets more than 50 knot jet are present. Actually a lot of moisture is being provided by this system from the atlantic which is actually helping the thunderstorm to split into supercells. 

SPC has issued Mesoscale discussion and watches for tornadoes and it has to be a historical day. 

AS the day progresses, this system will move in the missourie valley and a shifting warmfront will help in some more severe outbreak. the chance of Hails also is there and might be as large as 1 inch golf ball..The EHI but natural also good and positioned over coast. So there has to be a coastal flood warning

This system will deactivate only when the cold front arrives that is expected by evening

Keep tracking us and for another 12 hours turn to spc.noaa.gov as it is time for shut down for METD due to a night here.

A TORNADO WATCH ALSO HAS BEEN ISSUED

#807 UNTIL 100 PM CST

THE NWS STORM PREDICTION CENTER 

HAS ISSUED A    TORNADO WATCH

 FOR PORTIONS OF             

   SMALL PART OF SOUTH-CENTRAL

 AND SOUTHEASTERN ARKANSAS  

         LOUISIANA EXCEPT FAR

 NORTHWEST AND FAR SOUTHEAST 

PORTIONS           PORTIONS OF 

WESTERN MISSISSIPPI          

 PORTIONS OF EAST TEXAS     

      COASTAL WATERS      

  EFFECTIVE THIS THURSDAY

 MORNING AND AFTERNOON FROM

 450 AM UNTIL    100 PM CST. 

       TORNADOES...HAIL TO 1

 INCH IN DIAMETER...THUNDERSTORM

 WIND GUSTS    TO 75 MPH...AND 

DANGEROUS LIGHTNING ARE POSSIBLE

 IN THESE AREAS.

METD 

AKSHAY

Tornadoes happening in southern section and heavy snows and blizzards up in the north

Tornadoes dominating in the south

A severe weather alert is still on after the southern USA was
dominated by more than dozen of tornado. METD has missed little in
this forecasting as we were dealing with some local problems. The RUC
forecast showed a drastic change in The CAPE and EHI values which
facilated over 12 tornadoes in Texas east,Lousiana.
The day has begun again and so shall the action. The RADAR is showing
that thunderstorm in lousiana is splitting into supercells and they
are surely capable of producing tornadoes.
Tornado warnings are in effect.
It is a squall line system

The countries which might be affected from hails,high winds and tornadoes are
catahoula,franklin,west
caroll,concordia,ashley,richland,tensas,morehouse,chicot.

These warnings are upto 1 pm.A warm front and cold front together are
helping in developement of tornadoes

Keep up with ur tornado preparedness things and keep tracking
spc.noaa.gov for details

HEAVY SNOW STORM AND THUNDERSTORM IN USA IN 48 HRS

 METD WEATHER STATION 

ALERT DEPT ALERT FOR WINTER STORM AND THUNDERSTORM A powerful low pressure system is moving in the country from the north western side. This is bringing snowfall on its way. At present The RUC forecast for 300mb shows trough is digging in from Washington state,There is another one digging in directly from south-western states. SO infact, we w'd be having a joint effect of this two troughs over central and southern areas. At first this trough will enter and mix with the southern trough. There will be low level jets of 50 knots over south dakota which will bring rains in the form of heavy snowfall. By the time the snow ends on

Version:1.0 StartHTML:0000000168 EndHTML:0000003251 StartFragment:0000000471 EndFragment:0000003234

Christmas Day, significant accumulations will have occurred. Present indications are that 7 to 10 inches of total snow will fall across far western Nebraska, with 8 to 14 inches in the Imperial, North Platte, and Valentine areas. In the Broken Bow and O'Neill areas, 12 to 18 inches are expected. Significant blowing and drifting snow is also expected Thursday into Christmas as a result of strong winds. The combination of wind and snow in the Plains could lead to blizzard or near blizzard conditions in parts of Kansas and Nebraska, possibly into other areas as well SO travellers during christmas must set out early as if they want to travel west, Then These snowy conditions will prevent them from doing so. THUNDERSTORM IN SOUTH The Powerful low level system with 120 knot jet will bring heavy rains in the south. Actually there will be a thunderstorm which might be capable of producing isolated thunderstorms.However the chance of Tornadoes will be less as the CAPE is limited for tornadoes. though there would be extreme wind shears..The EHI are also down. The low level jets of 50 knot will bring heavy rains in southeast texas and southwest lousiana also in pensacola . NWS has issued Flood Warnings across southern states like lousiana,southeast texas.Some thunderstorms are possible in the Desert Southwest. NWS has also issued winter storm warning for Nebraska areas. MERRY X'MAS TO ALL METD READERS.

Stay tuned for Updates  

METD 

Akshay

CURRENT PHOTOS OF WINTER STORM IN WASHINGTON DC AREA 2009