Dr. Jeff Masters' WunderBlog

Dangerous tornado outbreak expected Saturday; Gulf of Mexico SSTs warmest on record

Posted by: Dr. Jeff Masters, 14:57 GMT le 13 avril 2012

+47

A dangerous tornado outbreak is expected on Saturday over the Plains, says NOAA's Storm Prediction Center (SPC). Warm, moist air flowing northwards from a Gulf of Mexico that has record-warm waters will collide with cold air funneling down from Canada, creating a highly unstable air mass capable of creating strong thunderstorm updrafts. An impressive upper-level low, accompanied by a jet stream with 105 - 125 mph winds at middle levels of the atmosphere, will create plenty of wind shear, giving the air the spin it needs to form tornadoes. SPC has has issued their highest level of alert, a "High Risk," for much of Oklahoma, Kansas, and Nebraska for Saturday. Included in the "High Risk" area are the cities of Wichita, Oklahoma City, and Lincoln. This is the second time SPC has issued a "High Risk" forecast this year; the first "High Risk" forecast came for the March 2 tornado outbreak, which killed 41 people and did $1.5 - $2 billion in damage. It is very unusual for SPC to issue a "High Risk" forecast more than a day in advance of a suspected tornado outbreak; according to Wikipedia, today's "High Risk" forecast is only the second time SPC has ever done this. The other instance was for the April 6 - 8, 2006 tornado outbreak focused over Tennessee, which generated 73 tornadoes that killed 13 and did $1.5 billion in damage. People living in the threatened area need to pay close attention on Saturday to this dangerous severe weather situation.

Figure 1. Severe weather risk for Saturday, April 14, 2012, from NOAA's Storm Prediction Center.

Gulf of Mexico water temperatures the warmest on record
Temperatures in the states bordering the Gulf of Mexico were the 3rd - 7th warmest on record during the first three months of 2012, according to NOAA's National Climatic Data Center. This allowed Sea Surface Temperatures (SSTs) in the Gulf of Mexico (25 - 30°N, 85 - 90°W) to climb to 1.4°C (2.5°F) above average during March 2012, according to a wunderground analysis of the Hadley Centre SST data set. This is the warmest March value on record for the Gulf of Mexico, going back over a century of record keeping. During the first two weeks of April, Gulf of Mexico waters remained about 1.5°C above average, putting April on pace to have the warmest April water temperatures on record. Only one year in the past century has had April water temperatures in the Gulf of Mexico more than 1.1°C above average; that year was 2002 (1.4°C above average.) All that record-warm water is capable of putting record amounts of water vapor into the air, since evaporation increases when water is warmer. Because moist air is less dense than dry air, this warm, moist air flowing northwards from the Gulf of Mexico into the developing storm system over the Plains will be highly unstable once it encounters cold, dry air aloft. The record-warm waters of the Gulf of Mexico are a key reason for the high risk of severe weather over the Plains this weekend.

Figure 2. Departure of Sea Surface Temperature (SST) from average for April 12, 2012, as computed by NOAA/NESDIS. SSTs in the Gulf of Mexico are at their warmest levels on record for this time of year.

Follow Weather Underground on twitter for the latest on this potential severe weather outbreak.

Jeff Masters

April Storms (llpj04)

this storm greeted me as I came out of the grocery store, chased me home and got to my driveway the same time I did.

Lightning Up the Pond - Oklahoma (mbryan777)

Last night we had a pretty spectacular lightning storm. I put the camera on the tripod in time-lapse mode and laid on my back on the hillside above the pond taking in an amazing show. When it got more exciting than I was comfortable with, I ran for the house.

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751. hydrus 15:03 GMT le 14 avril 2012
Member Since: 27 septembre 2007 Posts: 1 Comments: 14315

752. Thundercloud01221991 15:04 GMT le 14 avril 2012
storm initiation just west of Dodge City, KS Member Since: 1 août 2006 Posts: 28 Comments: 3673

753. hurricanehunter27 15:06 GMT le 14 avril 2012
Quoting Thundercloud01221991: storm initiation just west of Dodge City, KS Looks like we will get an early start to things today. Member Since: 22 juillet 2010 Posts: 1 Comments: 3474

754. Thundercloud01221991 15:08 GMT le 14 avril 2012
This is crazy ... if it starts now we could see close to 18 hours of craziness Member Since: 1 août 2006 Posts: 28 Comments: 3673

755. Tropicsweatherpr 15:11 GMT le 14 avril 2012
Here we go with the flood advisories in PR. FLOOD ADVISORY NATIONAL WEATHER SERVICE SAN JUAN PR 1103 AM AST SAT APR 14 2012 PRC005-013-027-065-071-099-115-131-141800- /O.NEW.TJSJ.FA.Y.0123.120414T1503Z-120414T1800Z/ /00000.N.ER.000000T0000Z.000000T0000Z.000000T0000 Z.OO/ HATILLO PR-MOCA PR-SAN SEBASTIAN PR-ARECIBO PR-AGUADILLA PR- ISABELA PR-CAMUY PR-QUEBRADILLAS PR- 1103 AM AST SAT APR 14 2012 THE NATIONAL WEATHER SERVICE IN SAN JUAN HAS ISSUED AN * URBAN AND SMALL STREAM FLOOD ADVISORY FOR MINOR FLOODING OF POOR DRAINAGE AREAS IN FOR THE FOLLOWING MUNICIPALITIES... IN PUERTO RICO HATILLO...MOCA...SAN SEBASTIAN...ARECIBO...AGUADILLA... ISABELA...CAMUY AND QUEBRADILLAS * UNTIL 200 PM AST * AT 1057 AM AST...DOPPLER RADAR ESTIMATED MODERATE TO LOCALLY HEAVY SHOWERS AND ISOLATED THUNDERSTORMS ACROSS THE ADVISORY AREA. ABOUT ONE INCH OF RAIN PER HOUR IS BEING OBSERVED WITH SOME OF THESE SHOWERS AND ARE CAUSING URBAN FLOODING IN SOME AREAS AS WELL AS QUICK RIVER RISES. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN. && LAT...LON 1849 6691 1850 6678 1848 6674 1851 6660 1847 6658 1836 6658 1833 6661 1832 6672 1835 6674 1832 6677 1832 6682 1835 6683 1837 6690 1841 6716 1850 6716 1851 6699 $$ JJA Member Since: 29 avril 2009 Posts: 64 Comments: 8273

756. MAweatherboy1 15:13 GMT le 14 avril 2012
Quoting Thundercloud01221991: This is crazy ... if it starts now we could see close to 18 hours of craziness Actually this could hurt the chances of a big event today because these storms do not have very much daytime heating which will prevent them from being very strong and this could work to stabilize the atmosphere for storms that form later, potentially limting their intensity... Just an idea though Member Since: 11 février 2012 Posts: 67 Comments: 6379

757. Thundercloud01221991 15:15 GMT le 14 avril 2012
Quoting MAweatherboy1: Actually this could hurt the chances of a big event today because these storms do not have very much daytime heating which will prevent them from being very strong and this could work to stabilize the atmosphere for storms that form later, potentially limting their intensity... Just an idea though not exactly because these are forming further west... not inside of the high risk area they will move into the high risk area during peak heating Member Since: 1 août 2006 Posts: 28 Comments: 3673

758. Ameister12 15:15 GMT le 14 avril 2012
Quoting MAweatherboy1: How about a nice poll... How many tornado reports will we receive today A. 0-50 B. 51-100 C. 101-150 D. 151-200 E. 200 or more I go with high end C C. About 110 is my guess. Member Since: 9 août 2009 Posts: 9 Comments: 3518

759. DocBen 15:15 GMT le 14 avril 2012
Why do I feel like I have a bulls-eye on me? Wichita, KS Member Since: 16 mai 2006 Posts: 0 Comments: 96

760. oddspeed 15:15 GMT le 14 avril 2012
Quoting TropicalAnalystwx13: Current STP is OFF THE CHARTS!!!!!!! No seriously, it's just insane right now. It will go off the chart (over 10) later today though. next 24hrs: Member Since: 4 septembre 2007 Posts: 0 Comments: 225

761. Articuno 15:16 GMT le 14 avril 2012
Here it goes... Member Since: 22 octobre 2011 Posts: 0 Comments: 1926

762. Articuno 15:17 GMT le 14 avril 2012
Quoting MAweatherboy1: How about a nice poll... How many tornado reports will we receive today A. 0-50 B. 51-100 C. 101-150 D. 151-200 E. 200 or more I go with high end C 179 is my guess. Member Since: 22 octobre 2011 Posts: 0 Comments: 1926

763. MAweatherboy1 15:18 GMT le 14 avril 2012
Quoting Thundercloud01221991: not exactly because these are forming further west... not inside of the high risk area they will move into the high risk area during peak heating That's why I don't think what I said will be that big of a deal... Maybe just a minor hindrance Is it me or is the storm near Loup City, Nebraska forming a hook already? Member Since: 11 février 2012 Posts: 67 Comments: 6379

764. hurricanehunter27 15:23 GMT le 14 avril 2012
Quoting MAweatherboy1: That's why I don't think what I said will be that big of a deal... Maybe just a minor hindrance Is it me or is the storm near Loup City, Nebraska forming a hook already? Maybe, storms in KS will choke each other, there to close together. Member Since: 22 juillet 2010 Posts: 1 Comments: 3474

765. Tazmanian 15:27 GMT le 14 avril 2012
SEVERE THUNDERSTORM WARNING NEC163-175-141615- /O.NEW.KGID.SV.W.0021.120414T1525Z-120414T1615Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HASTINGS NE 1025 AM CDT SAT APR 14 2012 THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN SHERMAN COUNTY IN CENTRAL NEBRASKA... VALLEY COUNTY IN CENTRAL NEBRASKA... * UNTIL 1115 AM CDT * AT 1022 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES SOUTH OF ARCADIA...OR 21 MILES SOUTHWEST OF ORD...AND MOVING NORTH AT 40 MPH. * LOCATIONS IMPACTED INCLUDE... ORD...ARCADIA...ELYRIA AND FORT HARTSUFF STATE PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. Member Since: 21 mai 2006 Posts: 5088 Comments: 111361

766. BahaHurican 15:31 GMT le 14 avril 2012
Quoting BobinTampa: Does anyone have the wunderground iphone app? The 6-day forecast they have on there is consistently 5-10 degrees higher than any other forecast. It says it is going to be 99 here on Tuesday. 93 tomorrow and Monday. Every place else says 86 or so for a high. Good app otherwise. I think u have mentioned this before. hsve u wumailed support? Quoting weatherh98: If you don't pay u have to wait 24 hrs Ah.... interesting this... guess somebody was listening last year after all... Member Since: 25 octobre 2005 Posts: 19 Comments: 17690

767. Articuno 15:31 GMT le 14 avril 2012
Quoting Articuno: Here it goes... whoa, look at the dighton cell! Member Since: 22 octobre 2011 Posts: 0 Comments: 1926

768. BahaHurican 15:33 GMT le 14 avril 2012
Quoting DocBen: Why do I feel like I have a bulls-eye on me? Wichita, KS Just stay close to the basement.... not being facetious w/ this. I sure hope pple r cued up and ready to run 4 cover.... Member Since: 25 octobre 2005 Posts: 19 Comments: 17690

769. hydrus 15:33 GMT le 14 avril 2012
Quoting DocBen: Why do I feel like I have a bulls-eye on me? Wichita, KS Because you do.I know you already know, but keep tuned to your local news and weather today. It could be even more serious than it looks...And it already looks serious. Member Since: 27 septembre 2007 Posts: 1 Comments: 14315

770. BahaHurican 15:36 GMT le 14 avril 2012
btw... if my typing seems a bit off, it's because I hurt my wrist and so can't type as usual. And it HURTS! Member Since: 25 octobre 2005 Posts: 19 Comments: 17690

771. hydrus 15:38 GMT le 14 avril 2012
Kinimatic. Member Since: 27 septembre 2007 Posts: 1 Comments: 14315

772. wxmojo 15:39 GMT le 14 avril 2012
Real processes vs. crazy talk weather modification. Which will best correlate to the actual outbreak this afternoon? minus.com/mbm48ahIIc/1f Member Since: 4 Mars 2012 Posts: 0 Comments: 32

773. Articuno 15:41 GMT le 14 avril 2012
Quoting Articuno: Here it goes... Hook echo above ness city? Member Since: 22 octobre 2011 Posts: 0 Comments: 1926

774. Grothar 15:41 GMT le 14 avril 2012
Quoting aspectre: 663 CybrTeddy: Also, didn't see it mentioned. Hurricane Irene was retired from the naming list yesterday. Replaced by Irma in the 2017 Atlantic Hurricane Season. 667 Articuno: look at post 305 Or at 6 Chucktown: Irene has been retired and 7 Tropicsweatherpr: ...and replaced with Irma Or at 305 : Grother: I didn't know they were retiring the name Irene with Irma. Maybe someone posted this and I missed it. I miss a lot of things these days. Member Since: 17 juillet 2009 Posts: 57 Comments: 19555

775. hydrus 15:41 GMT le 14 avril 2012
Instability map for this evening. Member Since: 27 septembre 2007 Posts: 1 Comments: 14315

776. Articuno 15:43 GMT le 14 avril 2012
Quoting Articuno: Hook echo above ness city? Member Since: 22 octobre 2011 Posts: 0 Comments: 1926

777. hurricanehunter27 15:44 GMT le 14 avril 2012
I'll be taking request for storms with GR2Analyst. You want to see velocity/base or wtv just ask me. I'll also be doing my own radar posts. Member Since: 22 juillet 2010 Posts: 1 Comments: 3474

778. Thundercloud01221991 15:44 GMT le 14 avril 2012
EHI forecast... that is way off the charts Member Since: 1 août 2006 Posts: 28 Comments: 3673

779. cyclonekid 15:45 GMT le 14 avril 2012
Let the storms begin. Member Since: 14 juillet 2009 Posts: 51 Comments: 1629

780. hurricanehunter27 15:45 GMT le 14 avril 2012
PDS watch just issued!!! Particularly Dangerous Situation (PDS) Tornado Watch #165 Issued/Updated: Apr 14, 2012 at 1541 UTC Expires: Apr 14, 2012 at 2300 UTC Tornado Watch 165 Status Message has not been issued Member Since: 22 juillet 2010 Posts: 1 Comments: 3474

781. Tazmanian 15:46 GMT le 14 avril 2012
we could use a tornado watch now Member Since: 21 mai 2006 Posts: 5088 Comments: 111361

782. redux 15:46 GMT le 14 avril 2012
hey guys-- does anyone know where i can find relevant data for GRlevel3? Member Since: 28 juin 2010 Posts: 0 Comments: 183

783. BahaHurican 15:47 GMT le 14 avril 2012
Quoting Grothar: Or at 305 : Grother:* I didn't know they were retiring the name Irene with Irma. Maybe someone posted this and I missed it. I miss a lot of things these days.* Hey, G. what's ur opinion on the transitiom 2 el nino? Somebody was sayimg earlier that we may not see a true el nino but instead just a trip 2 neutral... Member Since: 25 octobre 2005 Posts: 19 Comments: 17690

784. ScottLincoln 15:48 GMT le 14 avril 2012
Quoting hurricanehunter27: PDS watch just issued!!! All watches in a high risk must be PDS watches. I believe that is by NWS policy. Member Since: 28 septembre 2002 Posts: 3 Comments: 1593

785. Tazmanian 15:49 GMT le 14 avril 2012
we have a PDS Member Since: 21 mai 2006 Posts: 5088 Comments: 111361

786. Ameister12 15:49 GMT le 14 avril 2012
PDS Tornado Watch!!! WOUS64 KWNS 141541 WOU5 BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH OUTLINE UPDATE FOR WT 165 NWS STORM PREDICTION CENTER NORMAN OK 1045 AM CDT SAT APR 14 2012 TORNADO WATCH 165 IS IN EFFECT UNTIL 600 PM CDT FOR THE FOLLOWING LOCATIONS KSC007-009-025-027-029-033-041-047-051-053-055-057 -063-065-069- 077-081-083-089-095-097-101-105-113-119-123-135-13 7-141-143-145- 147-151-155-157-159-163-165-167-169-171-175-179-18 3-185-195-201- 142300- /O.NEW.KWNS.TO.A.0165.120414T1545Z-120414T2300Z/ KS . KANSAS COUNTIES INCLUDED ARE BARBER BARTON CLARK CLAY CLOUD COMANCHE DICKINSON EDWARDS ELLIS ELLSWORTH FINNEY FORD GOVE GRAHAM GRAY HARPER HASKELL HODGEMAN JEWELL KINGMAN KIOWA LANE LINCOLN MCPHERSON MEADE MITCHELL NESS NORTON OSBORNE OTTAWA PAWNEE PHILLIPS PRATT RENO REPUBLIC RICE ROOKS RUSH RUSSELL SALINE SCOTT SEWARD SHERIDAN SMITH STAFFORD TREGO WASHINGTON OKC003-045-047-053-059-093-151-153-142300- /O.NEW.KWNS.TO.A.0165.120414T1545Z-120414T2300Z/ OK . OKLAHOMA COUNTIES INCLUDED ARE ALFALFA ELLIS GARFIELD GRANT HARPER MAJOR WOODS WOODWARD ATTN...WFO...DDC...OUN...TOP...GID...GLD...ICT... Member Since: 9 août 2009 Posts: 9 Comments: 3518

787. ScottLincoln 15:49 GMT le 14 avril 2012
Quoting redux: hey guys-- does anyone know where i can find relevant data for GRlevel3? Depends on what you consider to be "relevant data?" Member Since: 28 septembre 2002 Posts: 3 Comments: 1593

788. nrtiwlnvragn 15:49 GMT le 14 avril 2012
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 165 NWS STORM PREDICTION CENTER NORMAN OK 1045 AM CDT SAT APR 14 2012 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL KANSAS NORTHWEST OKLAHOMA EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 1045 AM UNTIL 600 PM CDT. ...THIS IS A PARTICULARLY DANGEROUS SITUATION... DESTRUCTIVE TORNADOES...LARGE HAIL TO 4 INCHES IN DIAMETER... THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES EAST SOUTHEAST OF GAGE OKLAHOMA TO 55 MILES NORTHWEST OF CONCORDIA KANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5). REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. DISCUSSION...A CLUSTER OF THUNDERSTORMS IS RAPIDLY INCREASING OVER SOUTHWEST KS AND SHOULD SPREAD ACROSS CENTRAL KS THROUGH THE AFTERNOON. OTHER STORMS MAY DEVELOP SOUTHWARD INTO NORTHWEST OK IN THE NEXT COUPLE OF HOURS. INITIAL STORMS MAY BE ELEVATED. HOWEVER...SURFACE DESTABILIZATION WILL OCCUR AS LOW CLOUDS BURN OFF...AIDING IN STORMS BECOMING SURFACE-BASED. VERY FAVORABLE VERTICAL SHEAR PROFILES WILL PROMOTE A RISK OF TORNADIC SUPERCELLS CAPABLE OF VERY LARGE HAIL AND DAMAGING WINDS. STRONG TORNADOES WILL BE AN INCREASING RISK THROUGH THE AFTERNOON. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24035. Member Since: 23 septembre 2005 Posts: 11 Comments: 8946

789. hurricanehunter27 15:50 GMT le 14 avril 2012
Quoting ScottLincoln: All watches in a high risk must be PDS watches. I believe that is by NWS policy. Seems like a logical policy. Member Since: 22 juillet 2010 Posts: 1 Comments: 3474

790. WxGeekVA 15:51 GMT le 14 avril 2012
Quoting MAweatherboy1: How about a nice poll... How many tornado reports will we receive today A. 0-50 B. 51-100 C. 101-150 D. 151-200 E. 200 or more I go with high end C D. Member Since: 3 septembre 2011 Posts: 13 Comments: 3323

791. Doppler22 15:52 GMT le 14 avril 2012
The storm just east of broken bow looks like it could be trying to form a hook Member Since: 13 février 2012 Posts: 3 Comments: 1254

792. hurricanehunter27 15:52 GMT le 14 avril 2012
I bet the storm Northeast of La Crosse produces a tornado at some point. Member Since: 22 juillet 2010 Posts: 1 Comments: 3474

793. nrtiwlnvragn 15:54 GMT le 14 avril 2012
TORNADO WATCH PROBABILITIES FOR WT 0165 NWS STORM PREDICTION CENTER NORMAN OK 1044 AM CDT SAT APR 14 2012 WT 0165 PDS PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 80% PROB OF 1 OR MORE STRONG /F2-F5/ TORNADOES : 70% PROB OF 10 OR MORE SEVERE WIND EVENTS : 90% PROB OF 1 OR MORE WIND EVENTS >= 65 KNOTS : 80% PROB OF 10 OR MORE SEVERE HAIL EVENTS : >95% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 80% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : >95% && ATTRIBUTE TABLE: MAX HAIL /INCHES/ : 4.0 MAX WIND GUSTS SURFACE /KNOTS/ : 70 MAX TOPS /X 100 FEET/ : 500 MEAN STORM MOTION VECTOR /DEGREES AND KNOTS/ : 24035 PARTICULARLY DANGEROUS SITUATION : YES Member Since: 23 septembre 2005 Posts: 11 Comments: 8946

794. MAweatherboy1 15:55 GMT le 14 avril 2012
The storm near Ord, NE has a monster hail core Member Since: 11 février 2012 Posts: 67 Comments: 6379

795. Ameister12 15:55 GMT le 14 avril 2012
Prob. of 2 or more tornadoes: High 80% Prob. of 1 or more strong (EF2-EF5) tornadoes: High 70% Member Since: 9 août 2009 Posts: 9 Comments: 3518

796. hurricanehunter27 15:55 GMT le 14 avril 2012
Probability of 2 or more tornadoes High (80%) Probability of 1 or more strong (F2-F5) tornadoes High (70%) I have seen higher but its up there. Probably bump it up to 95%,90% later today. Member Since: 22 juillet 2010 Posts: 1 Comments: 3474

797. MAweatherboy1 15:56 GMT le 14 avril 2012
Quoting hurricanehunter27: I bet the storm Northeast of La Crosse produces a tornado at some point. It has that look- I think you're right. Plus it has no storms in front of it to disrupt it- It will be first to reach all the energy Member Since: 11 février 2012 Posts: 67 Comments: 6379

798. redux 15:57 GMT le 14 avril 2012
Quoting ScottLincoln: Depends on what you consider to be "relevant data?" i want something where i can look at the storms in the areas affected. Member Since: 28 juin 2010 Posts: 0 Comments: 183

799. wxmod 15:57 GMT le 14 avril 2012
China today. MODIS satellite photo Member Since: 4 octobre 2011 Posts: 0 Comments: 1234

800. evilpenguinshan 15:59 GMT le 14 avril 2012
you talking about cell X1? Member Since: 20 Mars 2012 Posts: 0 Comments: 357

801. cyclonekid 15:59 GMT le 14 avril 2012
PDS Watch until 6pm CDT Member Since: 14 juillet 2009 Posts: 51 Comments: 1629

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