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May 2016 Obs


Isopycnic

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Still haven't hit 90 at PGV, average first date for a 90 is May 5th, latest ever is June 13th....if we can make it past the next few days then the pattern coming up would put beating that date in the ballpark. Neither the CMC of GFS show temps of 90 or better here through June 9th

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A warm afternoon with some air quality issues: 

 

NCZ007>009-024>026-040>042-270100-
PERSON-GRANVILLE-VANCE-ORANGE-DURHAM-FRANKLIN-CHATHAM-WAKE-JOHNSTON-
INCLUDING THE CITIES OF...BUSHY FORK...CONCORD...ROXBORO...SURL...
OXFORD...BUTNER...CREEDMOOR...DABNEY...HENDERSON...CHAPEL HILL...
CARRBORO...BETHESDA...DURHAM...RESEARCH TRIANGLE...PILOT...
INGLESIDE...LOUISBURG...FRANKLINTON...HASTY...SILER CITY...BYNUM...
MONCURE...PITTSBORO...RALEIGH...CARY...SMITHFIELD...CLAYTON...
FLOWERS...SELMA...BENSON...COATS CROSSROADS
912 AM EDT THU MAY 26 2016

...AIR QUALITY ALERT IN EFFECT UNTIL 9 PM EDT THIS EVENING...

THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL AND NATURAL RESOURCES
HAS ISSUED AN AIR QUALITY ACTION DAY...IN EFFECT UNTIL 9 PM EDT THIS
EVENING.

A CODE ORANGE AIR QUALITY ALERT FOR OZONE HAS BEEN ISSUED.
GROUND LEVEL OZONE CONCENTRATIONS WITHIN THE REGION MAY APPROACH
OR EXCEED UNHEALTHY STANDARDS. MEMBERS OF SENSITIVE GROUPS MAY
EXPERIENCE HEALTH EFFECTS. THE GENERAL PUBLIC IS NOT LIKELY TO BE
AFFECTED. FOR ADDITIONAL INFORMATION...PLEASE VISIT THE NORTH
CAROLINA DIVISION OF AIR QUALITY WEB SITE AT
HTTP://DAQ.STATE.NC.US/AIRAWARE/FORECAST/.


 

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A warm afternoon with some air quality issues: 

 

NCZ007>009-024>026-040>042-270100-

PERSON-GRANVILLE-VANCE-ORANGE-DURHAM-FRANKLIN-CHATHAM-WAKE-JOHNSTON-

INCLUDING THE CITIES OF...BUSHY FORK...CONCORD...ROXBORO...SURL...

OXFORD...BUTNER...CREEDMOOR...DABNEY...HENDERSON...CHAPEL HILL...

CARRBORO...BETHESDA...DURHAM...RESEARCH TRIANGLE...PILOT...

INGLESIDE...LOUISBURG...FRANKLINTON...HASTY...SILER CITY...BYNUM...

MONCURE...PITTSBORO...RALEIGH...CARY...SMITHFIELD...CLAYTON...

FLOWERS...SELMA...BENSON...COATS CROSSROADS

912 AM EDT THU MAY 26 2016

...AIR QUALITY ALERT IN EFFECT UNTIL 9 PM EDT THIS EVENING...

THE NORTH CAROLINA DEPARTMENT OF ENVIRONMENTAL AND NATURAL RESOURCES

HAS ISSUED AN AIR QUALITY ACTION DAY...IN EFFECT UNTIL 9 PM EDT THIS

EVENING.

A CODE ORANGE AIR QUALITY ALERT FOR OZONE HAS BEEN ISSUED.

GROUND LEVEL OZONE CONCENTRATIONS WITHIN THE REGION MAY APPROACH

OR EXCEED UNHEALTHY STANDARDS. MEMBERS OF SENSITIVE GROUPS MAY

EXPERIENCE HEALTH EFFECTS. THE GENERAL PUBLIC IS NOT LIKELY TO BE

AFFECTED. FOR ADDITIONAL INFORMATION...PLEASE VISIT THE NORTH

CAROLINA DIVISION OF AIR QUALITY WEB SITE AT

HTTP://DAQ.STATE.NC.US/AIRAWARE/FORECAST/.

 

 

What causes this?  It's not been warm, dry, and stagnent for days on end.

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PGV just hit 90 for the first time this year at 4:05, so 21 days past the average first date and a hr or two from making it long enough to most likely have set a new record for latest first 90 degree day since models dont have us over 90 again before June 13th which is the now safe latest first 90 date for PGV. 

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What causes this?  It's not been warm, dry, and stagnent for days on end.

Ground-level ozone is a colorless and highly irritating gas that forms just above the earth's surface. It is called a "secondary" pollutant because it is produced when two primary pollutants react in sunlight and stagnant air. These two primary pollutants are nitrogen oxides (NOx) and volatile organic compounds (VOCs).

NOx and VOCs come from natural sources as well as human activities. About 95 per cent of NOx from human activity come from the burning of coalgasoline and oil in motor vehicles, homesindustries and power plants. VOCs from human activity come mainly from gasoline combustion and marketing, upstream oil and gas production, residential wood combustion, and from the evaporation of liquid fuels and solvents. Significant quantities of VOCs also originate from natural (biogenic) sources such as coniferous forests.

Ozone is known to have significant effects on human health. Exposure to ozone has been linked to pre-mature mortality and a range of morbidity health end-points such as hospital admissions and asthma symptom days. In addition to its effects on human health, ozone can significantly impact vegetation and decrease the productivity of some crops. It can also injure flowers and shrubs and may contribute to forest decline in some parts of Canada. Ozone can also damage synthetic materials, cause cracks in rubber, accelerate fading of dyes, and speed deterioration of some paints and coatings. As well, it damages cotton, acetate, nylon, polyester and other textiles.

The Ozone Annex was added to the Canada-United States Air Quality Agreement (December 2000) to address the transboundary air pollution leading to high levels of ground-level ozone, a major component of smog.

 

Heavy rain again here. Picked up half an inch so far in the past hour.

Now you're just rubbing it in  :P   

 

CAE recorded 89 for the afternoon high and not the first drop in the bucket  :(  

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Failed to reach 90 again today. High of 88 again. One more day in the upper 80's and then we drop to the low 80's for awhile. Hopefully no 90 or higher for the forseeable future.

 

It hit 90 here for one obs which are taken every 20 mins at PGV so at best it was 90 for 20-30 mins, sucks cause we would most likely set a new date for latest first 90 degree day if it wasnt for that 20-30 min period lol......oh well. 

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Now you're just rubbing it in :P

CAE recorded 89 for the afternoon high and not the first drop in the bucket :(

Haha. This is really impressive though for one of our driest months of the year. We only average 0.63 this month.

Just had another heavy downpour. 0.76 so far today.

2 day total is 2.27. 2.32 for the month. 3.78 for the year.

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It hit 90 here for one obs which are taken every 20 mins at PGV so at best it was 90 for 20-30 mins, sucks cause we would most likely set a new date for latest first 90 degree day if it wasnt for that 20-30 min period lol......oh well. 

 

I checked back to see if KEWN has hit 90 this year and we did back in March unfortunately. Today no 90 once again thankfully. Currently 80/62.

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