20:26 - Ohhoo... Alates 16:35 kuni keskööni täna eesti aja järgi. Lisaks on kehtivad veel kaks tornaadovalvet.
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 123
NWS STORM PREDICTION CENTER NORMAN OK
935 AM EDT THU APR 18 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
EASTERN ILLINOIS
CENTRAL AND EASTERN INDIANA
SOUTHERN LOWER MICHIGAN
NORTHWEST OHIO OHIO
LAKE MICHIGAN
* EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 935 AM UNTIL
500 PM EDT.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
* PRIMARY THREATS INCLUDE...
SEVERAL INTENSE TORNADOES LIKELY
SEVERAL SIGNIFICANT DAMAGING WIND GUSTS TO 80 MPH POSSIBLE
A FEW VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE
18:25 - Tunni eest:
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 125
NWS STORM PREDICTION CENTER NORMAN OK
925 AM CDT THU APR 18 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
* TORNADO WATCH FOR PORTIONS OF
CENTRAL AND EASTERN ARKANSAS
SOUTHERN ILLINOIS
SOUTHWESTERN INDIANA
WESTERN KENTUCKY
SOUTHEASTERN MISSOURI
* EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 925 AM UNTIL
500 PM CDT.
* PRIMARY THREATS INCLUDE...
SEVERAL TORNADOES LIKELY WITH A FEW INTENSE TORNADOES POSSIBLE
SEVERAL DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS
TO 75 MPH POSSIBLE
/--/
DISCUSSION...QUASI-LINEAR BAND OF TSTMS WITH EMBEDDED LEWP/BOW FORMATIONS IS EXPECTED TO PROCEED EWD 20-25 KT ACROSS WW AREA WITH EMBEDDED ELEMENTS MOVING MORE RAPIDLY NEWD...ROUGHLY 40 KT. GIVEN LACK OF CINH EVIDENT IN 12Z LZK RAOB...DEVELOPMENT OF SUPERCELLS AND/OR LINE SEGMENTS AHEAD OF INITIAL/PRIMARY CONVECTION CANNOT BE RULED OUT AS WELL. WARM SECTOR IS FCST TO DESTABILIZE STEADILY THROUGHOUT DAYLIGHT HOURS IN PRESENCE OF FAVORABLE DEEP SHEAR.
18:22 - Asi kisub natuke pahaendeliseks. Nashville's saadetakse 18Z üles erakorraline raadiosond.
14:22 - SPC'lt
PUBLIC SEVERE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 0602 AM CDT THU APR 18 2013 ...SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE MID MISSISSIPPI AND LOWER OH VALLEYS TODAY... THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE DEVELOPMENT OF WIDESPREAD DAMAGING WINDS AND A FEW TORNADOES OVER PARTS OF THE MID MISSISSIPPI AND LOWER OH VALLEYS TODAY.
/--/
A POWERFUL UPPER STORM SYSTEM OVER THE PLAINS WILL MOVE EASTWARD TODAY AND AFFECT THE MS AND OH VALLEYS. A FAST-MOVING LINE OF THUNDERSTORMS AHEAD OF THE STORM SYSTEM WILL SWEEP ACROSS THE RISK AREA TODAY INTO THIS EVENING. STRONG WINDS ALOFT COUPLED WITH A MOIST AND UNSTABLE AIR MASS WILL PROVIDE THE POTENTIAL FOR RATHER WIDESPREAD DAMAGING WINDS WITH THE LINE. ALSO...A FEW TORNADOES ARE POSSIBLE WITH STORMS WITHIN AND AHEAD OF THE LINE.
Peamiselt on ilmselt tegijateks pagituuled, radarpilti vaadates pole ka ime - äikesed on pigem liinile joondunud. Samuti pole välistatud ka mõned tornaadod.
18.04 13:15 - http://www.spc.noaa.gov/climo/reports/today.html - SPC'sse on tulnud paar teadet tornaadodest. Seni on valdavalt olnud pigem rahe- ning pagituulte sündmus. Läbi suurte Lagendike on moodustunud suur kvaasilineaarne konvektiivne süsteem. Muuhulgas võib varsti äikese saada Westi linn Texases, kus täna varahommikul eesti aja järgi oli karm tehaseplahvatus.
22:37 - Edela-Oklahomas on puhkenud tugevad äikesed.
20:46 Nii tänaseks kui ka homseks on SPC'lt Moderate Risk.
PUBLIC SEVERE WEATHER OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 1140 AM CDT WED APR 17 2013 ...A SIGNIFICANT SEVERE WEATHER EPISODE IS EXPECTED OVER PARTS OF THE SOUTHERN/CENTRAL PLAINS LATER TODAY AND TONIGHT... THE NWS STORM PREDICTION CENTER IN NORMAN OK IS FORECASTING THE DEVELOPMENT OF TORNADOES /SOME POTENTIALLY SIGNIFICANT AND LONG TRACKED/...LARGE HAIL AND DAMAGING WINDS OVER PARTS OF THE SOUTHERN/CENTRAL PLAINS LATER TODAY AND TONIGHT.
//--//
WARM MOIST AND UNSTABLE AIR AT THE SURFACE WILL ADVANCE NORTHWARD INTO OKLAHOMA...MISSOURI...AND KANSAS LATER THIS AFTERNOON AS SOUTHERLY WINDS STRENGTHEN IN ADVANCE OF AN UPPER DISTURBANCE OVER THE WESTERN UNITED STATES. SCATTERED TO NUMEROUS THUNDERSTORMS WILL FORM THIS AFTERNOON AND NIGHT ALONG THE LEADING EDGE OF THIS UNSTABLE AIR MASS FROM CENTRAL OKLAHOMA INTO EASTERN KANSAS AND WESTERN MISSOURI. THESE STORMS WILL BE CAPABLE OF PRODUCING VERY LARGE HAIL...DAMAGING WINDS...AND A COUPLE OF TORNADOES. FARTHER SOUTH OVER SOUTHERN PORTIONS OF OKLAHOMA AND NORTHERN TEXAS...ISOLATED THUNDERSTORM DEVELOPMENT IS EXPECTED TO OCCUR DURING THE LATE AFTERNOON AND EVENING. THE COMBINATION OF STRONG INSTABILITY AND INCREASING WINDS ALOFT WILL RESULT IN A THREAT FOR VERY LARGE HAIL AND A FEW TORNADOES...SOME OF WHICH MAY BE SIGNIFICANT AND POTENTIALLY LONG TRACKED INTO TONIGHT ALONG THE I-44 CORRIDOR OF OKLAHOMA. DURING THE OVERNIGHT...STORMS ACROSS THE ENTIRE REGION WILL MERGE INTO A SQUALL LINE WITH A CONTINUED THREAT FOR DAMAGING WINDS AND ISOLATED TORNADOES.
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