Yesterday was a wet day across the state. These downpours were more like tropical weather. Some areas in the state had Dew Points Temps in the 70s. I did a little research and found that 70s are a yearly average in the Pacific Islands at Guam International Airport. Well we added 1.47" of rain to the August 2012 rain bucket bringing the months total up to 6.51". This is good for the 8th wettest August on Record and the wettest August since 1989. Here's the list of the Top 8 Wettest August Months:
(1) 1980-8.34″
(2) 1989-8.05″
(3) 1976-7.95″
(4) 1921-7.26″
(5) 1978-6.89″
(6) 1886-6.70″
(7) 1949-6.64″
(8) 2012-6.51″(Aug 1-28)
Unlikely we'll add any more rain to this months total. Not only is this year the wettest month of 2012 but the wettest since Spring 2011. This will not best the last wettest month with 7.98" back in April 2011. Here's the update deficit chart.
Rainfall Deficit Around the State
| Location | Year to Date Precipitation (through Aug. 28) | Departure from Average | Precip since June 1 | Departure from Average | Precip Since August 1 | Departure from Average |
| Indianapolis | 22.49 | - 6.54 | 7.43 | -4.20 | 6.51 | +3.68 |
| Evansville | 17.97 | -12.67 | 6.59 | -3.81 | 4.10 | +1.40 |
| Lafayette | 17.41** | - 7.83 | 6.66 | -4.56 | 4.94 | +1.79 |
| Terre Haute | 17.54** | -13.28 | 5.24 | -7.14 | 4.42 | +1.27 |
| Muncie | 18.92 | - 8.66 | 6.68 | -5.33 | 3.10 | +0.13 |
| Bloomington | 16.30** | -16.51 | 4.55 | -8.37 | 2.89 | -0.25 |
| Shelbyville | 16.72 | -13.16 | 3.67 | -8.43 | 2.96 | -0.03 |
| Ft. Wayne | 18.86 | -7.64 | 8.51 | -3.19 | 3.51 | +0.21 |
| South Bend | 24.58 | - 0.32 | 13.28 | +2.10 | 5.26 | +1.87 |
| Indy - Eagle Creek | 22.13 | -6.17 | 8.99 | -2.50 | 8.36 | +5.52 |
Here's the list of days where precipitation has fallen since May 1st:
1) May 1st------1.48"
2) May 4th------Trace
3) May 6th------Trace
4) May 7th------0.48"
5) May 8th------0.01"
6) May 9th------0.13"
7) May 21st-----0.10"
8) May 29th-----0.36"
9) May 31st------0.14"
1) June 1st-------Trace Amounts
2) June 2nd------0.03"
3) June 3rd-------Trace Amounts
4) June 4th-------0.02"
5) June 11th-----Trace Amounts
6) June 29th-----0.04"
7) June 30th----Trace Amounts
8) July 1st--------Trace Amounts
9) July 8th-------Trace Amounts
10) July 14th----Trace Amounts
11) July 18th----0.40"
12) July 19th----0.28"
13) July 20th----Trace Amounts
14) July 24th----Trace Amounts
15) July 27th----0.15"
16) July 31st----Trace Amounts
17) Aug. 4th----0.25"
18) Aug. 5th----1.26"
19) Aug. 8th----0.94"
20) Aug. 9th----1.47"
21) Aug. 10th---Trace Amounts
22) Aug. 13th---0.28"
23) Aug. 16th---0.78"
24) Aug. 17th---0.06"
25) Aug. 27th---1.47"
If you do the math (well...I've done it for you) than you can see we've picked up 10.13" since May 1st, 7.43" since June 1st, 6.60" since July 1st, and 6.51" since August 1st. Now 21 out of the past 120 days have been recorded with measurable rainfall. Measurable Rainfall is anything 0.01" or higher (Trace Amounts aren't measurable).
August 2012
High Temperature/Low Temperature/Precipitation
Aug 1----91/65/NONE
Aug 2----97/62/NONE
Aug 3----93/73/NONE
Aug 4----94/74/0.25"
Aug 5----88/70/1.26"
Aug 6----89/65/NONE
Aug 7----95/65/NONE
Aug 8----98/69/0.94"
Aug 9----87/66/1.47"
Aug 10--77/63/Trace
Aug 11--79/60/NONE
Aug 12--83/58/NONE
Aug 13--82/66/0.28"
Aug 14--80/64/NONE
Aug 15--86/61/NONE
Aug 16--82/65/0.78"
Aug 17--79/62/0.06"
Aug 18--78/54/NONE
Aug 19--79/59/NONE
Aug 20--81/56/NONE
Aug 21--81/58/NONE
Aug 22--85/59/NONE
Aug 23--88/61/NONE
Aug 24--90/64/NONE
Aug 25--92/67/NONE
Aug 26--87/68/NONE
Aug 27--86/66/1.47"
The average high for this August is 86.2° with a average low of 63.7°. This puts the average monthly temp at 74.9°.
This months precipitation exceeds 6". This is well above normal. The normal monthly precipitation amount is 3.13" for August.
The days continue to get shorter. We've lost 1 hr 44 secs of daylight since August 1(ending 8/28).
METEOROLOGICAL SUMMER (JUNE-JULY-AUGUST)
Its been a warm summer. It started off hot & dry. Then August rolled around and the tables turned. We recorded 13 consecutive days with an avg daily temp at or below normal (84°), which started August 9th and ended on the 13th. This cool off had dropped Summer 2012 from being the warmest on record to the 5th warmest on record.
Only a few days left of meteorological summer and a little over 3 weeks left of astronomical summer. About 75% (66 days) out of the past 88 days have been above normal. The average high for this season is 89.4° with an avg low of 66.2°. This puts the avg temperature this summer (Since June 1) at 77.8° which is about 5° above normal. This season is currently the 5th warmest summer on record. Here's the Top Five list:
2) 1936---78.5°
3) 1934---78.2°
4) 2010---78.1°
5) 2012---77.8°
6) 2011---77.6°
Currently, we sit at 51 days with temps 90+ for the year. We need 7 more to tie the record of 58 set in 1983 and 8 more days to break it. We have about 2 chances to inch closer to yet another historic event over the next 5 days.
How great are our chances of breaking that?
Well, I say we hit 90 on Thursday and Friday this week to end August. I've taken a look back 5 years and in September we've had no more than 5 days with temps 90+. We had 5 in 2007 and 2010. 4 last year and 3 in 2008. There was none in 2009.
SEPTEMBER
2011: 99° on 1st & 2nd. 100° on 3rd. 92° on 13th.
2010: 91° on 1st & 13th, 90° on 6th, 96° on 21st, 94° on 23rd.
2008: 91° on 1st 7 3rd. 93° on 2nd.
2007: 91° on 3rd, 94° on 2nd, 96° on 3rd, 90° on 23rd, & 92° on 24th.
This pretty much averages out to 3 days. I say we hit 90+ 5, maybe 6 more times. This puts my guess at around 56, maybe 57 days. We'll see how this plays out though. It will be close, so if we can manage to hold onto the heat that long then we could tie or even break it. I think our chances are greater at tying it but in the end I say we'll fail to break the record.
Also, while I'm talking about record heat, the record for most 100° days in a year is 12 set back in 1936. We stand at 9 this year. That will likely stand tall. If we were to get to 100 again, I think it will be a one time deal.
The cold front that passed yesterday brung a cooler brand of air. Humidity levels came DOWN. Temperatures dipped back to a refreshing low of 61° this morning. todays afternoon highs leveled off in the mid 80s, under Mostly Sunny Skies. Tonight, clear skies under a Northeast Winds will allow temperatures to fall into the mid to upper 50s in the state. In Indianapolis, low temperatures may fall anywhere between 58°-61°. So, this give ways to cool comfortable night.
Tomorrow, with a clear and dry atmostphere under low humidity will allow temps to bump up just a tad into the upper 80s. I think northeast winds will prevent us from topping 90s.
We'll have an uptick in temperatures going into Thursday and Friday along with humidity levels too. We should hit low 90s on Thursday and maybe even Mid 90s on Friday.
| AUGUST 29 | AUGUST 30 | AUGUST 31 | SEPT. 1 | SEPT. 2 | SEPT. 3 | SEPT. 4 | SEPT. 5 |
| WEDNESDAY | THURSDAY | FRIDAY | SATURDAY | SUNDAY | MONDAY | TUESDAY | WEDNESDAY |
 Sunny |
SUNNY |
& HOT |
R E M N |
A N T S OF |
I S A A C? |
Sunny |
Sunny |
| HUMIDTY | RETURNS | ||||||
| 88 | 90 | 93 | 84 | 86 | 88 | 86 | 88 |
| 63 | 68 | 72 | 68 | 68 | 69 | 67 | 68 |
TROPICS WATCH
Much attentiveness has gone in the Altantic for the past week. This morning after 11AM, Tropical Storm Isaac was upgraded to a weak Category 1 Hurricane with sustained winds at 75mph with a pressure at 975mb moving northeast at 10MPH. At 5PM, Hurricane Isaac winds increased to 81 MPH with a pressure at 980mb moving northwest at 7 mph. This is bringing heavy rain bands off the Louisiana coast. The hurricane hunters reported flight level winds of over 115 mph. Well the path of Isaac has certainly been up for debate for the past week and there still is some uncertainty of what path it will take. Right now, it appears it will continue to track Northwest to Louisiana, North to Arkansas and than shift Northeast and track towards the Ohio Valley. Isaac has now made landfall in Plaquemines Parish, LA, just Southwest of the mouth of the Mississippi River.
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NWS Indianapolis, Indiana has issued a Hazardous Weather Outlook for the upcoming holiday weekend due to Isaac. Isolated Thunderstorms are possible beginning Thurdsday Night through Sunday. Some of which could be severe with damaging wind gusts. This could also bring the potential for an isolated tornado. Flooding due to heavy rainfall will be the primary concern. I will note, its still days out and the threat isn't exactly 100%. We could get low amounts, we could get heavy amounts. Here's the projected rainfall total map.
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The air is sinking out west this hot dome of air is bubbling up and moving east towards the Ohio Valley. This could possibly either slow down Isaac or bring lower rainfall amounts for the Labor Day weekend. Keep in mind, hurricanes weaken as they travel across land. This would simply just be an area of low pressure that would sweep past the state but still packs a good punch. The NWS in Indianapolis has already issued a Hydrologic Outlook for the possibility of weekend flooding concerns. This would be due to runoff. When heavy rain makes contact with hard dry grounds (we are still in a drought) then this can be proned to runoff since it has a hard time getting deep down into the grounds soil. So this, in turn, causes flooding. From what it looks like remnants from Isaac could arrive anytime on Saturday and linger on into Sunday. This should end by Monday morning and we should clear out and stay dry for most of next week under sunny skies. If you have outdoor holiday plans, Monday would be the best day out of the three.
For the latest updates on Isaac, here's a link to the National Hurricane Center
A few things I didn't mentioned above about Isaac.
1) This is its OWN storm with a mind of it OWN. You may be able to compare the damage to other previous hurricanes but this is not Katrina, Andews, Ike, or whatever other storm name you come up with. This is ISAAC.
2) Isaac has already killed atleast 27 people and the toll may rise. 5 in the Dominican Republic and 19 in Haiti, 1 in Puerto Rico, and 2 in Florida.
3) Isaac spawned up an EF0 tornado, damaging several mobile homes in Vero Beach, Florida on August 27. A tornado classified as a EF0 would have to stir up wind speeds between 65-85 MPH. This is a weak tornado.
4) Storm Surge-an abnormal rise of water generated by a storm. This can be very dangerous and life threatning. The combination of a storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters. Isaac could bring storm surges of up to 12 ft in Louisiana.
DID YOU KNOW: A storm surge of 23 ft has the ability to inundate (flood or submerge) 67% of interstates, 57% of arterials, almost half of rail miles, 29 airports, and virtually all ports in the Gulf Coast area.
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