Air quality degrades as heat spreads east

By: Angela Fritz , 6:53 PM GMT on June 29, 2012

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For the seventh day in a row we're talking about heat as it spreads into the Mid-Atlantic and East Coast. The hottest temperatures in the country will be from Missouri southeast to Georgia and north to the Washington D.C. area. Why not Florida? Moisture tends to keep the temperature regulated; the worst heat waves this country has seen have also coincided with widespread drought. Given the extreme to exceptional drought that many states can't get rid of, this heat wave isn't all that surprising. Air quality is becoming more of an issue the longer the heat sticks around. Air quality alerts have been issued for many major cities from Kansas City to New York, including Chicago, Detroit, and Atlanta. Chicago is seeing some relief from the heat today in the form of thunderstorms—northeast Illinois and northwest Indiana are under a severe thunderstorm watch. Washington D.C. is pushing its all-time record high of 106°, which is the high that BestForecast is going with. You can see the all-time record highs for almost all major cities here.


Figure 1. BestForecast high temperature for Friday.

Our Weather Historian, Christopher C. Burt, will likely post two blogs today and tomorrow this week's heat, but for now, he wraps up Thursday's significant temperature records:

• 109° in Chesterfiled, Missouri (well short of state monthly record of 112°)
• 108° in Lawrenceville, Illinois (ties all-time state June monthly record of 108° at Palestine in June 1954)
• 108° in Huntingsburg, Indiana (well short of state monthly record of 111°)
• 107° in Defiance, Ohio (1° short of all-time state June record-108° in Germantown in 1934)
• 111° in Evening Shade, Arkansas (short of state June record of 113° in 1936)
• 108° in Smyrna, Tennessee (short of 110° state record in 1936)
• 107° in Little Rock, Arkansas (all-time June monthly record)

Waldo Canyon Fire now 15% contained

The Denver Post is reporting that 346 homes have been lost to the Waldo Canyon Fire, which is burning northwest of Colorado Springs. They also report that one person has died and another is missing in the area of the blaze. The fire has been 15% contained since Thursday night, and the acreage is down to 16,750, welcome news to a terrified city.


Figure 2. Satellite imagery of Invest 97L, which is expected to drift west into the Caribbean over the next few days.

Invest 97L

A tropical wave in the central main development region of the North Atlantic is still producing thunderstorm activity as it moves west, and the National Hurricane Center has increased its chance of development to 20%. 97L's circulation continues to be moderate and in the past day has realigned with the thunderstorm activity, which is likely why NHC gave the go to invest the wave and begin running models on it. This wave continues to be in some moderate wind shear, 10-15 knots, and sea surface temperature is around average, 28° C (82° F), which is warm enough to support tropical development. Many of the track models are forecasting 97L to continue trekking west into the Caribbean, crossing the Lesser Antilles around July 1.

Angela

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1263. TropicalAnalystwx13
9:28 PM GMT on July 01, 2012
So, the power's flickering and the storms aren't even here yet?
Member Since: July 6, 2010 Posts: 113 Comments: 31502
1262. HurricaneHunterJoe
6:39 PM GMT on June 30, 2012
Tell me the truth! This is how you all would prefer 97L to look in a few days? No?

Member Since: September 18, 2010 Posts: 0 Comments: 5135
1261. HurricaneHunterJoe
6:20 PM GMT on June 30, 2012
Quoting Grothar:


I'll pass on your observation and see what they think.


What a good man you are!!
Member Since: September 18, 2010 Posts: 0 Comments: 5135
1260. stormpetrol
6:10 PM GMT on June 30, 2012
I see 97L has been dropped in TWO by the NHC.
Member Since: April 29, 2007 Posts: 0 Comments: 7682
1259. PedleyCA
5:58 PM GMT on June 30, 2012
Quoting ncstorm:
found this picture of a derecho



That looks very nasty, "Respect Me." Yes, Sir, lol....
Member Since: February 29, 2012 Posts: 0 Comments: 5686
1258. tropicfreak
5:55 PM GMT on June 30, 2012
Quoting PackManWx:
Last night about 11PM in Raleigh, we didn't get a drop of rain at my house, but the wind started blowing like something crazy.

I got up and went out on the porch and it was very very eery. It was still pretty warm and the wind was blowing TS force.

It was over in about 30 minutes. No doubt part of that gust front blowing through.


Kentucky Speedway actually had a similar situation that occurred. Even though the line passed to their north they felt the gust front and it did some damage, knocked some tents and other items blown around. They had to halt Sprint Cup Qualifying temporarily until the wind ceased.
Member Since: September 2, 2006 Posts: 110 Comments: 6874
1257. washingtonian115
5:52 PM GMT on June 30, 2012
Quoting ncstorm:


its funny how the severe weather threat kinda dropped off and then all of sudden..boom!!
Those storms were happy when they hit this humid and hot air mass.Well as someone told me...just think of rains.
Member Since: August 14, 2010 Posts: 10 Comments: 16423
1256. STXHurricanes2012
5:52 PM GMT on June 30, 2012
About to get hit with some storms from the blob...thanks blob
Member Since: June 4, 2012 Posts: 0 Comments: 767
1255. WunderAlertBot (Admin)
5:50 PM GMT on June 30, 2012
JeffMasters has created a new entry.
1254. ncstorm
5:49 PM GMT on June 30, 2012
Quoting washingtonian115:
I'm tired of this weather.Not my cup of tea at all.I want the rest of the summer to be in it's 80's with your "normal" thunderstorms...


its funny how the severe weather threat kinda dropped off and then all of sudden..boom!!
Member Since: August 19, 2006 Posts: 13 Comments: 14557
1253. MAweatherboy1
5:49 PM GMT on June 30, 2012
July is going to be a very slow month on here...

Member Since: February 11, 2012 Posts: 82 Comments: 7623
1252. redwagon
5:47 PM GMT on June 30, 2012
Quoting MZT:
Sitting at home in Charlotte with the windows open and fans running... The air coming in from the outdoors feels like warm HVAC venting.

I suppose these temps are not THAT outlandish to folks living in Texas or the southwest where 100-110 happens every year. But we don't usually see this here... things normally max out in the upper 90s.
A good way to keep cool is to wear 'playclothes' and jump in the shower with cool water. Keeping your hair and neck wet helps.
Member Since: August 4, 2007 Posts: 0 Comments: 3175
1251. PackManWx
5:46 PM GMT on June 30, 2012
Last night about 11PM in Raleigh, we didn't get a drop of rain at my house, but the wind started blowing like something crazy.

I got up and went out on the porch and it was very very eery. It was still pretty warm and the wind was blowing TS force.

It was over in about 30 minutes. No doubt part of that gust front blowing through.
Member Since: June 21, 2012 Posts: 0 Comments: 68
1250. LargoFl
5:46 PM GMT on June 30, 2012
Member Since: August 6, 2011 Posts: 4 Comments: 36941
1249. ncstorm
5:46 PM GMT on June 30, 2012
found this picture of a derecho

Member Since: August 19, 2006 Posts: 13 Comments: 14557
1248. washingtonian115
5:45 PM GMT on June 30, 2012
Quoting tropicfreak:
It has been a crazy week here in Central VA. Monday we had the supercell that did significant damage across the Richmond area and spawned a few tornadoes, then the heat, then last night's storms occurred. I'm done with the heat and severe weather for a while.
I'm tired of this weather.Not my cup of tea at all.I want the rest of the summer to be in it's 80's with your "normal" thunderstorms...
Member Since: August 14, 2010 Posts: 10 Comments: 16423
1247. LargoFl
5:45 PM GMT on June 30, 2012
Quoting tropicfreak:


Well local mets down here in central VA are saying it won't be as bad. It doesn't feel as humid outside as it did yesterday. We shall see though.
last night was a straightline RED wall of wind in that supercell..today so far i dont see any straightline cells
Member Since: August 6, 2011 Posts: 4 Comments: 36941
1246. WxGeekVA
5:44 PM GMT on June 30, 2012
Hope I don't get a ban for this, but this seems relevant to the weather situation yesterday and today:

Member Since: September 3, 2011 Posts: 13 Comments: 3468
1245. stoormfury
5:43 PM GMT on June 30, 2012
97L is showing signs of a comeback. there is an indication that a stronger area of low pressure is now about 14n 56w. looking at the recent sat photos it appears that low level clouds are streaming from the se to this new llc
Member Since: August 22, 2006 Posts: 0 Comments: 2609
1244. tropicfreak
5:43 PM GMT on June 30, 2012
Quoting washingtonian115:
Oh no.Local weather mets believe we could see some more strong winds and hail this evening.


Well local mets down here in central VA are saying it won't be as bad. It doesn't feel as humid outside as it did yesterday. We shall see though.
Member Since: September 2, 2006 Posts: 110 Comments: 6874
1243. allancalderini
5:43 PM GMT on June 30, 2012
Quoting weatherh98:


hhow would you like it dressed?
surprise me can I have a coke too please
Member Since: October 15, 2011 Posts: 0 Comments: 4041
1242. LargoFl
5:43 PM GMT on June 30, 2012
Member Since: August 6, 2011 Posts: 4 Comments: 36941
1241. tropicfreak
5:42 PM GMT on June 30, 2012
It has been a crazy week here in Central VA. Monday we had the supercell that did significant damage across the Richmond area and spawned a few tornadoes, then the heat, then last night's storms occurred. I'm done with the heat and severe weather for a while.
Member Since: September 2, 2006 Posts: 110 Comments: 6874
1240. weatherh98
5:42 PM GMT on June 30, 2012
BBL
Member Since: June 17, 2011 Posts: 11 Comments: 6461
1239. washingtonian115
5:42 PM GMT on June 30, 2012
Quoting tropicfreak:


Don't think the wind damage will be as widespread as they were last night. The storms knocked down the temps and the humidity just a little bit. Still, it's a serious situation that I'm not looking forward to.
Oh no.Local weather mets believe we could see some more strong winds and hail this evening.
Member Since: August 14, 2010 Posts: 10 Comments: 16423
1238. weatherh98
5:41 PM GMT on June 30, 2012
Quoting allancalderini:
I will eat my crow with fries please.


hhow would you like it dressed?
Member Since: June 17, 2011 Posts: 11 Comments: 6461
1237. tropicfreak
5:41 PM GMT on June 30, 2012
Quoting LargoFl:
..at one point, i think the nws report in ohio said the winds were gusting over 80 mph, gee I just knew that straightline winds were going to do alot of damage


There was a 91 mph gust in Indiana.
Member Since: September 2, 2006 Posts: 110 Comments: 6874
1236. weatherh98
5:40 PM GMT on June 30, 2012
Quoting washingtonian115:
They have shelters opened.But as you said most will not know this is coming.Sort of like the attack of Pearl Harbor.The first destructive wave comes through.Then next wave comes through and then the final blow(Sunday).


yup. this has the potential to be worse than last night.
Member Since: June 17, 2011 Posts: 11 Comments: 6461
1235. LargoFl
5:40 PM GMT on June 30, 2012
Quoting tropicfreak:


It was crazy last night here south of yall. I measured 60 mph winds, but didn't see a lot of damage in my neighborhood. Other parts of the Richmond metro weren't so lucky. Over 100,000 people in the Richmond/Tri-Cities area are still without power, and with the triple digit heat again today... it would get ugly in a hurry. Fortunately I was lucky not to lose power. Kinda shocked how well my power grid held up. I never lost power in Irene or Isabel, or even in the most severe storms. Heard you folks up there got smacked pretty good.
..at one point, i think the nws report in ohio said the winds were gusting over 80 mph, gee I just knew that straightline winds were going to do alot of damage
Member Since: August 6, 2011 Posts: 4 Comments: 36941
1234. tropicfreak
5:39 PM GMT on June 30, 2012
Quoting washingtonian115:
They'll get crack'in once the day time heating really sets in.Not to mention instability feeding them.


Don't think the wind damage will be as widespread as they were last night. The storms knocked down the temps and the humidity just a little bit. Still, it's a serious situation that I'm not looking forward to.
Member Since: September 2, 2006 Posts: 110 Comments: 6874
1233. allancalderini
5:39 PM GMT on June 30, 2012
I will eat my crow with fries please.
Member Since: October 15, 2011 Posts: 0 Comments: 4041
1232. washingtonian115
5:39 PM GMT on June 30, 2012
Quoting weatherh98:


not good, people without power will have NO CLUE that its coming
They have shelters opened.But as you said most will not know this is coming.Sort of like the attack of Pearl Harbor.The first destructive wave comes through.Then next wave comes through and then the final blow(Sunday).
Member Since: August 14, 2010 Posts: 10 Comments: 16423
1231. weatherh98
5:39 PM GMT on June 30, 2012
Quoting Articuno:


What if another Derecho developed.



it pprolly will
Member Since: June 17, 2011 Posts: 11 Comments: 6461
1230. WxGeekVA
5:39 PM GMT on June 30, 2012
Wow...06Z NAM CAPE for midnight tonight!



Slightly less on the 12Z but this gets me worried that we're gonna have a bad time.
Member Since: September 3, 2011 Posts: 13 Comments: 3468
1229. Tazmanian
5:38 PM GMT on June 30, 2012
97L RIP
Member Since: May 21, 2006 Posts: 5091 Comments: 114753
1228. tropicfreak
5:38 PM GMT on June 30, 2012
Quoting WxGeekVA:


Yep. It was insane, and they're calling for another round tonight. Hopefully people can at least do some clean up first!


It was crazy last night here south of yall. I measured 60 mph winds, but didn't see a lot of damage in my neighborhood. Other parts of the Richmond metro weren't so lucky. Over 100,000 people in the Richmond/Tri-Cities area are still without power, and with the triple digit heat again today... it would get ugly in a hurry. Fortunately I was lucky not to lose power. Kinda shocked how well my power grid held up. I never lost power in Irene or Isabel, or even in the most severe storms. Heard you folks up there got smacked pretty good.
Member Since: September 2, 2006 Posts: 110 Comments: 6874
1227. Tropicsweatherpr
5:37 PM GMT on June 30, 2012
97L was eliminated from the TWO.

No surprise at all.
Member Since: April 29, 2009 Posts: 75 Comments: 14046
1226. Articuno
5:37 PM GMT on June 30, 2012
Quoting weatherh98:


you can see it developing


What if another Derecho developed.
Member Since: October 22, 2011 Posts: 0 Comments: 2293
1225. allancalderini
5:36 PM GMT on June 30, 2012
97L is down of the TWO
TROPICAL WEATHER OUTLOOK
NWS NATIONAL HURRICANE CENTER MIAMI FL
200 PM EDT SAT JUN 30 2012

FOR THE NORTH ATLANTIC...CARIBBEAN SEA AND THE GULF OF MEXICO...

A LOW PRESSURE AREA...THE POST-TROPICAL REMNANTS OF DEBBY...LOCATED
ABOUT 490 MILES SOUTH-SOUTHEAST OF HALIFAX NOVA SCOTIA IS MOVING
TOWARD THE NORTHEAST AT ABOUT 20 MPH. ENVIRONMENTAL CONDITIONS ARE
UNFAVORABLE FOR RE-DEVELOPMENT. THIS SYSTEM HAS A LOW
CHANCE...NEAR 0 PERCENT...OF BECOMING A TROPICAL CYCLONE AGAIN
DURING THE NEXT 48 HOURS. ADDITIONAL INFORMATION ON THIS LOW CAN
BE FOUND IN HIGH SEAS FORECASTS ISSUED BY THE NATIONAL WEATHER
SERVICE.

AN AREA OF DISORGANIZED CLOUDINESS AND THUNDERSTORMS OVER THE
NORTHWESTERN GULF OF MEXICO IS ASSOCIATED WITH AN UPPER-LEVEL LOW
OVER NORTHERN MEXICO. THIS SYSTEM HAS A LOW CHANCE...NEAR 0
PERCENT...OF BECOMING A TROPICAL CYCLONE DURING THE NEXT 48 HOURS.

ELSEWHERE...TROPICAL CYCLONE FORMATION IS NOT EXPECTED DURING THE
NEXT 48 HOURS.
&&
Member Since: October 15, 2011 Posts: 0 Comments: 4041
1224. Articuno
5:36 PM GMT on June 30, 2012
Quoting WxGeekVA:

Did you fare out well with the Derecho storm?
Member Since: October 22, 2011 Posts: 0 Comments: 2293
1223. Articuno
5:36 PM GMT on June 30, 2012
The blog went frozen for me and my comment didn't appear sorry for the double post.
Member Since: October 22, 2011 Posts: 0 Comments: 2293
1222. weatherh98
5:35 PM GMT on June 30, 2012
Quoting WxGeekVA:


jaws music
Member Since: June 17, 2011 Posts: 11 Comments: 6461
1221. weatherh98
5:33 PM GMT on June 30, 2012
Quoting washingtonian115:
They'll get crack'in once the day time heating really sets in.Not to mention instability feeding them.


not good, people without power will have NO CLUE that its coming
Member Since: June 17, 2011 Posts: 11 Comments: 6461
1220. MZT
5:30 PM GMT on June 30, 2012
Sitting at home in Charlotte with the windows open and fans running... The air coming in from the outdoors feels like warm HVAC venting.

I suppose these temps are not THAT outlandish to folks living in Texas or the southwest where 100-110 happens every year. But we don't usually see this here... things normally max out in the upper 90s.
Member Since: September 24, 2005 Posts: 0 Comments: 793
1219. washingtonian115
5:30 PM GMT on June 30, 2012
Quoting weatherh98:


you can see it developing
They'll get crack'in once the day time heating really sets in.Not to mention instability feeding them.
Member Since: August 14, 2010 Posts: 10 Comments: 16423
1218. pottery
5:26 PM GMT on June 30, 2012
Quoting Grothar:


I'll pass on your observation and see what they think.

How was your evening?
Did you spike the punch?


Raining here on and off all morning, with thunder to the SW earlier.
97L has been almost ingested by the dry air. And there's plenty more of that.

The wave off Africa is looking decent though.
Member Since: October 24, 2005 Posts: 0 Comments: 24055
1217. weatherh98
5:26 PM GMT on June 30, 2012
Quoting washingtonian115:
Hey Gro how are ya?.Another round of nasty storms are in for us tonight.:(.


you can see it developing
Member Since: June 17, 2011 Posts: 11 Comments: 6461
1216. SubtropicalHi
5:26 PM GMT on June 30, 2012
Derecho: A derecho (Spanish for straight) is a widespread and long-lived, violent convectively induced straight-line windstorm that is associated with a fast-moving band of severe thunderstorms in the form of a squall line usually taking the form of a bow echo. Derechos blow in the direction of movement of their associated storms, similar to a gust front, except that the wind is sustained and generally increases in strength behind the “gust” front. A warm weather phenomenon, derechos occur mostly in summer, especially June and July in the Northern Hemisphere. -Wikipedia


Dang, where is the cool air that usually follows these storms? Bummer that the heat will continue.
Member Since: June 27, 2010 Posts: 1 Comments: 377
1215. washingtonian115
5:24 PM GMT on June 30, 2012
Hurricanes101 they were showing a pretty strong wave but not really developing it.
Member Since: August 14, 2010 Posts: 10 Comments: 16423
1214. allancalderini
5:22 PM GMT on June 30, 2012
Quoting Hurricanes101:


Isn't this the wave that some of the models were developing a week ago?
I think it was 97L but I could be wrong. and maybe we will see a yellow circle today in the eastern pacific.
Member Since: October 15, 2011 Posts: 0 Comments: 4041
1213. allancalderini
5:21 PM GMT on June 30, 2012
Quoting TropicalAnalystwx13:
As I was saying, I think they should give the wave off Africa a 20% chance of formation and tag it as Invest 98L. ASCAT showed a circulation and it looks better than 97L ever has/did. The NHC may be waiting for persistence before giving it a circle though.
Agree 100% with you maybe they should put a 10% right now and if convection persist a 20%.
Member Since: October 15, 2011 Posts: 0 Comments: 4041

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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.

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