It appears that the storms mentioned in today's NWS mesoscale discussions did not hold up after all. Click the following picture to see them dissipate shortly after moving into Ohio.
Monday, July 21, 2008
Storms Dissipate and Weaken
Slight Severe Weather Risk - 7-21-08
Most of Ohio is under a slight risk of severe weather activity today.
From the National Weather Service:
SPC AC 211257
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0757 AM CDT MON JUL 21 2008
VALID 211300Z - 221200Z
...THERE IS A SLGT RISK OF SVR TSTMS FROM THE LWR MO VLY INTO THE
MID MS AND OH VLYS...
...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF NEW ENG...
Technical Stuff:
...CNTRL PLNS INTO MID MS/OH VLYS... FORWARD-PROPAGATING/BOW MCS IN IL APPEARS...IN PART...TO BE ASSOCIATED WITH LEAD IMPULSE NOW IN IA/MN. MCS SHOULD CONTINUE GENERALLY ESEWD AHEAD OF IMPULSE...WITH PERHAPS A SLIGHT RIGHT-WARD TURN WITH TIME AS SFC HEATING DESTABILIZES DOWNSTREAM ENVIRONMENT INTO IND/KY. THE SYSTEM SHOULD REMAIN SVR...AND OTHER STORMS MAY FORM ALONG ITS OUTFLOW...AS SBCAPE INCREASES TO AOA 3000 J/KG, COUNTERACTING THE DESTABILIZATION... HOWEVER...WILL BE THE FACT THAT /1/ UVV LIKELY WILL GRADUALLY DECREASE AS IMPULSE BECOMES ABSORBED WITHIN LARGER SCALE TROUGH...AND /2/ WAA SHOULD ALSO DECREASE AS CONFLUENT 850-700 MB PATTERN NOW HELPING TO SUPPORT MCS /PER VWP AND PROFILER DATA/ WEAKENS.
Monday, July 14, 2008
Finally, Some Drier Weather
For most of this week, Ohio will be under a high pressure system, meaning that the weather will most likely be pretty nice. No appreciable rain is expected throughout the Ohio valley, and temperatures should be rather warm, too. Finally, the area might get a chance to dry out a little bit from all the recent rain!
NAM model forecast for Tuesday July 15th, 2008. Note the large open area over Ohio. This is the high pressure system.
Wednesday, July 9, 2008
Local Storm Reports, 7-8-08
The following reports of wind damage and hail are from the July 8, 2008 severe thunderstorms. For more storm reports, check http://www.wunderground.com/stormreport.asp#Ohio
Mahoning/Trumbull counties:
07/08/2008 0610 PM
5 miles E of Cortland, Trumbull County.
Thunderstorm wind damage, reported by trained spotter.
1 large tree uprooted.
07/08/2008 0610 PM
Warren, Trumbull County.
Thunderstorm wind damage, reported by law enforcement.
Numerous trees and wires down northern half of the County.
07/08/2008 0620 PM
Cortland, Trumbull County.
Thunderstorm wind damage, reported by amateur radio.
Large trees and limbs down.
Cincinnati area:
07/08/2008 0702 PM
6 miles WNW of Blue Ash, Hamilton County.
Hail e0.75 inch, reported by public.
07/08/2008 0704 PM
Sharonville, Hamilton County.
Thunderstorm wind damage, reported by law enforcement.
A building collapsed on mosteller Road. Numerous trees and power lines down in the Cottingham area.
07/08/2008 0713 PM
Sharonville, Hamilton County.
Thunderstorm wind gust e60.00 mph, reported by trained spotter.
Pea sized hail also reported.
Cuyahoga county:
07/08/2008 0510 PM
Cleveland, Cuyahoga County.
Thunderstorm wind damage, reported by law enforcement.
Tree down.
07/08/2008 0510 PM
Olmsted Falls, Cuyahoga County.
Thunderstorm wind damage, reported by law enforcement.
Trees and power lines down.
Tuesday, July 8, 2008
July 8, 2008 Severe Thunderstorm Pictures
Today, a rather strong squall line moved through Youngstown. At first I thought this storm was going to fizzle out and disappear before it even got here, so I wasn't paying much attention to it. I went out to put my car away and saw the storm had actually started looking decent, so I checked the radar and went out to get some pictures. The following photos show the gust front and shelf cloud passing over Youngstown, at approximately 6 PM EDT.
The shelf cloud approaching.
The shelf cloud passing overhead.
Roiling clouds seen after the passing of the shelf cloud.
More of the same clouds.
After these images were taken, I checked the radar again, and to my surprise, there was a tornado vortex signature (TVS) Southwest of Youngstown! This can be seen in the radar capture below. A TVS does not indicate the presence of a tornado; it merely shows that there is strong rotation in the storm. I tried to get a better view to my South, but ended up getting caught in the rain, so I didn't get any more pictures. At this point, the NWS warnings were playing on the radio, and the rain was getting to be quite torrential. I decided I was going to get out of there so that my car did not get dented by any hail, since the storm was indicated to be producing penny-sized hail. The TVS did not verify and there were no reports of funnel clouds in the Youngstown area.
Pittsburgh radar base reflectivity, 0.5* elevation. The pink triangle is the TVS.
Tornado Warning Issued for Toledo, 7-8-08
This tornado warning was issued for Toledo by the National Weather Service at 2:48 PM EDT, 7/8/08.
The National Weather Service in Cleveland has issued a
* Tornado Warning for...
Lucas County in Northwest Ohio...
northwestern Ottawa County in Northwest Ohio...
* until 330 PM EDT
* at 245 PM EDT... National Weather Service Doppler radar indicated a
severe thunderstorm capable of producing a tornado near Holland...
or about 7 miles southwest of Toledo... moving east at 38 mph.
* Other locations in the warning include but are not limited to
Oregon
If you are caught outside... seek shelter in a nearby reinforced
building. As a last resort... seek shelter in a culvert... ditch or low
spot and cover your head with your hands.
The safest place to be during a tornado is in a basement. Get under a
workbench or other piece of sturdy furniture. If no basement is
available... seek shelter on the lowest floor of the building in an
interior hallway or room such as a closet. Use blankets or pillows to
cover your body and always stay away from windows.
If in Mobile homes or vehicles... evacuate them and get inside a
substantial shelter. If no shelter is available... lie flat in the
nearest ditch or other low spot and cover your head with your hands.
Please report tornadoes... funnel clouds... strong winds or hail to the
National Weather Service by calling toll free... 877-633-6772... when
you can do so safely.
Lat... Lon 4173 8359 4173 8346 4171 8343 4170 8335
4163 8325 4159 8341 4162 8341 4161 8356
4157 8361 4154 8368 4152 8370 4150 8375
4168 8382
time... Mot... loc 1848z 252deg 33kt 4162 8366
Mello
Much of Ohio is also under severe thunderstorm warnings and watches until 8 PM EDT tonight. Some weather stations are also reporting winds in excess of 30 MPH.
Thursday, July 3, 2008
Rainfall Observations for July 2, 2008 Storms
OHIO PUBLIC INFORMATION STATEMENT:
The following are rainfall observations during the past 24 hours
for the heavy rains affecting Northwest Ohio. Appreciation is
extended to Highway departments...cooperative observers...Skywarn
spotters and media for these reports. This summary is also
available on our home Page at weather.Gov/Cleveland
**********************24 hour rainfall**********************
Location 24 hour time/date comments
rainfall of
(inches) measurement
Ohio
...Lucas County...
Sylvania 5.00 700 am 7/3
Sylvania 4.21 800 am 7/3
tol Arpt 3.70 805 am 7/3
West Toledo 2.93 800 am 7/3
Reno Beach 2.92 800 am 7/3
Whitehouse 3.70 800 am 7/3
Toledo Ema 4.15 800 am 7/3
Richfield TWP. 5.05 800 am 7/3
Toledo Point Place 3.39 900 am 7/3
...Wood County...
tdz Arpt 2.85 800 am 7/3
Wednesday, July 2, 2008
Amazing Up Close Tornado Video!
I recently found this closeup video of a tornado while browsing the Eastern US Weather Forums. This isn't in Ohio, nor is it even in the US. Oddly enough, this happened near Stockholm, Sweden! In this video, a man in a car takes a nearly direct hit from a tornado! Watch closely around 1:20, that is where this video gets really interesting!
NOTE: This is not my video. I don't even know the person that took this video ;)
4th of July Forecasts
Current forecasts are calling for chances of rain and thunderstorms on Independence Day across Ohio. Most areas in Ohio are expecting a 60-70% chance of thunderstorms. The further South into the state of Ohio you go, the higher these chances will become. Sure would be nice if these storms missed us.
Powerful Storm in Northern Ohio
About a half-hour before I am writing this, a powerful storm moved through Toledo. Currently the storm is still moving Eastward, and will be upon Cleveland shortly. This storm has a very sharply defined "bow echo", the curved red region in the radar shown below. Bow echoes typically mark the region where air (and rain) are exiting the storm at high velocities. A member of a regional forum has clocked wind speeds near and potentially above 60 MPH in lower Michigan. This is a dangerous storm, if you must be outdoors, think safe.
Cleveland radar, base reflectivity, 0.50* elevation, 07/02/08 8:40 PM EDT
Subscribe to:
Posts (Atom)
