Comparing New England's floods to the floods of Hurricanes Connie and Diane (1955)

By: Dr. Jeff Masters , 4:04 PM GMT on April 02, 2010

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The flood waters have receded in Rhode Island and surrounding regions of New England, leaving hundreds of millions of dollars in damage, but no flood-related deaths. The floods were caused by the third in a series of three extraordinarily wet Nor'easters that drenched the region with record rains over the past month. It was the wettest March on record over most of coastal New England from New York City to Boston, and the wettest month of any kind for several stations, including Providence, Rhode Island, and Blue Hill Observatory, Massachusetts. The rainfall amounts and resulting flooding in many cases exceeded the records set 55 years ago, during the notorious double-punch hurricanes of August 1955, when hurricanes Connie and Diane hit New England within five days of each other. However, this year's flooding event pales in comparison to the 1955 event, when considering damage and death toll. Hurricane Connie killed 25 people, and Hurricane Diane killed nearly 200 people when its record rains drenched regions already in flood because of Hurricane Connie. The single deadliest event occurred when a creek near Stroudsburg, Pennsylvania overflowed, killing fifty people unable to escape the rising water. Diane was the costliest hurricane in U.S. history, until it was surpassed by Hurricane Betsy in 1965. Accounting for inflation, Diane was the 16th costliest hurricane in U.S. history, with total damages of $7 billion (2004 USD.)


Figure 1. Total rainfall from hurricanes Connie and Diane in 1995. Image credit: NOAA.


Figure 2. Observed precipitation for the month of March 2010. Image credit: NOAA.

Severe weather today for Texas, Arkansas, and surrounding states
NOAA's Storm Prediction Center has designated portions of Texas and surrounding states as being at "slight" risk of severe weather today, as a strong springtime storm sweeps through the region. Check out the blog of our severe weather expert, Dr. Rob Carver, to get the details of this potential severe weather episode, which may bring damaging winds, hail, and possible tornadoes to the Dallas/Fort Worth metroplex this afternoon.

Portlight shipping 30,000 pounds of rice to Haiti
Portlight.org continues to work hard to get food and medical supplies into the earthquake zone in Haiti. Their latest effort is a shipment of 30,000 pounds of rice and 20,000 pounds of other supplies, mostly medical equipment, that has been loaded onto the schooner Halie and Mathew. The schooner is laying in Miami, fully loaded, waiting for a decrease in the easterly trade winds. These trade winds will blow at 10 - 20 knots over the next few days, thanks to the clockwise circulation of air around a high pressure system located just east of the Florida coast. According to the latest run of the GFS model, as visualized using our wundermap with the model map layer turned on, the high will slowly move eastward over the next week, and the easterly trade winds will finally die down by Thursday, allowing the Halie and Mathew to set sail for Hispaniola. Please visit the Portlight.org web site to learn more and to donate to this worthy cause.


Figure 3. Some of the 30,000 pounds of rice that has been loaded onto the schooner Halie and Mathew.

Jeff Masters

Rhode Island Flooding@ Newport # 9 (RIWXPhoto)
Rhode Island Flooding@ Newport # 9

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MAG UTC DATE-TIME
y/m/d h:m:s LAT
deg LON
deg DEPTH
km LOCATION
MAP 3.1 2010/04/04 23:54:57 33.303 -116.599 0.0 17 km ( 10 mi) ENE of Lake Henshaw, CA
MAP 3.6 2010/04/04 23:53:44 32.616 -115.796 0.4 22 km ( 14 mi) SSW of Seeley, CA
MAP 3.4 2010/04/04 23:49:55 33.446 -115.842 0.1 13 km ( 8 mi) SE of North Shore, CA
MAP 3.4 2010/04/04 23:48:23 32.916 -115.401 21.5 12 km ( 7 mi) N of Holtville, CA
MAP 3.5 2010/04/04 23:46:29 32.667 -115.795 3.5 17 km ( 11 mi) SW of Seeley, CA
MAP 4.7 2010/04/04 23:37:32 32.468 -115.565 0.8 22 km ( 14 mi) SSW of Mexicali, Mexico
MAP 4.3 2010/04/04 23:34:27 32.575 -115.717 20.1 23 km ( 15 mi) WSW of Calexico, CA
MAP 5.4 2010/04/04 23:25:09 32.122 -115.061 10.0 19 km ( 12 mi) SSE of Guadalupe Victoria, Mexico
MAP 3.6 2010/04/04 23:22:04 33.144 -116.496 7.1 12 km ( 7 mi) NE of Julian, CA
MAP 3.8 2010/04/04 23:19:20 32.751 -116.333 0.1 20 km ( 12 mi) NW of Jacumba Hot Springs, CA
MAP 5.1 2010/04/04 23:15:20 32.839 -115.585 16.9 1 km ( 1 mi) WSW of Imperial, CA
MAP 4.5 2010/04/04 23:09:49 32.440 -115.958 2.0 29 km ( 18 mi) SE of Jacumba Hot Springs, CA
MAP 3.9 2010/04/04 22:56:40 33.157 -116.446 10.1 12 km ( 8 mi) SW of Borrego Springs, CA
MAP 7.2 2010/04/04 22:40:40 32.128 -115.303 10.0 26 km ( 16 mi) SW of Guadalupe Victoria, Mexico
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The quake was initially evaluated as 6.9 and has been upgraded to 7.2.
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385. Yeah, I've seen that one before, and I still love it! lol
Member Since: October 25, 2005 Posts: 19 Comments: 22321
For the Guadalupe Victoria area this was "The Big One".
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They had a 7.2 about 3:40 their time today .... so these 6.9 quakes are aftershocks.

Lucky the location for the 7.2 is relatively unpopulated....

Link
Member Since: October 25, 2005 Posts: 19 Comments: 22321
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updated

Magnitude 7.2 - BAJA CALIFORNIA, MEXICO
2010 April 04 22:40:40 UTC
DetailsMapsScientific & TechnicalTsunami Earthquake Details
Magnitude 7.2
Date-Time Sunday, April 04, 2010 at 22:40:40 UTC
Sunday, April 04, 2010 at 03:40:40 PM at epicenter
Time of Earthquake in other Time Zones

Location 32.128°N, 115.303°W
Depth 10 km (6.2 miles) (poorly constrained)
Region BAJA CALIFORNIA, MEXICO
Distances 26 km (16 miles) SW (225°) from Guadalupe Victoria, Baja California, Mexico
60 km (38 miles) SSE (165°) from Mexicali, Baja California, Mexico
62 km (38 miles) SW (233°) from San Luis Río Colorado, Sonora, Mexico
167 km (104 miles) ESE (105°) from Tijuana, Baja California, Mexico

Location Uncertainty horizontal +/- 2.4 km (1.5 miles); depth +/- 31.6 km (19.6 miles)
Parameters Nph= 13, Dmin=70 km, Rmss=0.28 sec, Gp=259°,
M-type=regional moment magnitude (Mw), Version=2
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID ci14607652
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Quake upgraded to 7.2
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Wow. Go out to have a coffee with a fellow Wunderblogger and California rocks....

Member Since: October 25, 2005 Posts: 19 Comments: 22321
The good news about small-ish (relative to the disasters in Indonesia and Chile, anyway) earthquakes is that they relieve tension between the plates. They're usually not precursors to larger ones.

The fact that this 6.9 quake occurred probably means "the big one" will not be in this set of quakes.
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Re. 374

MODIFIED MERCALLI INTENSITY SCALE
...
X. Very Violent Extreme Damage
Most masonry and frame structures destroyed with their foundations. Some well-built wooden structures and bridges destroyed. Serious damage to dams, dikes, embankments. Large landslides. Water thrown on banks of canals, rivers, lakes, etc. Sand and mud shifted horizontally on beaches and flat land. Rails bent slightly.

XI. . . Rails bent greatly. Underground pipelines completely out of service.

XII. . . Damage nearly total. Large rock masses displaced. Lines of sight and level distorted. Objects thrown into the air.
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Pres. Obama has declared all of Rhode Island a disaster area. Link
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The people of Rhode Island need help NOW ....let's send clothing to RI ........many and I mean many people have lost everything...I have seen this first hand.....I live 15 miles form the flood area and it might as well have been a Hurricane that hit .....many homes are going to be condemend...very sad situation ...so any help would be appreciated...
Thanx in advance
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375. Skyepony (Mod)
Fresh Cloudsat of ROBYN.. pretty evident the drier right side is missing moisture in it's midlayer.



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Alot of people felt it, thankfully not too severe of shaking reported:


Then and again, I may have spoken too soon:
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looks like the quakes are moving ever so close to populated areas of the U.S. west coast..how much longer before the "big" one hits - hopefully never!
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Quoting KEEPEROFTHEGATE:




Magnitude 6.9 - BAJA CALIFORNIA, MEXICO
2010 April 04 22:40:39 UTC

Thankfully this quake was situated far enough away from San Diego and LA, CA. But I am sure lots of people felt the earth rock under their feet. Pray and hope there were no fatalities.
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5.1 just popped up in California:
MAP 5.1 2010/04/04 23:15:20 32.839 -115.585 16.9 SOUTHERN CALIFORNIA
MAP 4.5 2010/04/04 23:09:49 32.440 -115.958 2.0 BAJA CALIFORNIA, MEXICO
MAP 4.1 2010/04/04 22:49:45 38.804 -122.754 4.0 NORTHERN CALIFORNIA
MAP 4.0 2010/04/04 22:49:17 38.818 -122.760 1.4 NORTHERN CALIFORNIA
MAP 6.9 2010/04/04 22:40:39 32.093 -115.249 32.3 BAJA CALIFORNIA, MEXICO
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CNN reporting very light shaking...Nil to minimum damages. LA County barely affected.
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Looks like the SanAndreasFault has finally ripped.
MAP 3.4 2010/04/04 22:55:16 33.052 -116.637 2.7 5 km ( 3 mi) WSW of Julian, CA
MAP 4.1 2010/04/04 22:49:44 38.804 -122.754 4.0 4 km ( 3 mi) SW of Cobb, CA
MAP 4.0 2010/04/04 22:49:17 38.818 -122.760 1.4 4 km ( 2 mi) WSW of Cobb, CA
MAP 6.9 2010/04/04 22:40:39 32.093 -115.249 32.3 26 km ( 16 mi) SSW of Guadalupe Victoria, Mexico
MAP 3.3 2010/04/04 22:34:48 32.184 -115.287 0.2 20 km ( 13 mi) SW of Guadalupe Victoria, Mexico
MAP 3.4 2010/04/04 09:36:25 32.227 -115.276 4.1 17 km ( 11 mi) WSW of Guadalupe Victoria, Mexico
MAP 3.2 2010/04/04 07:51:35 32.137 -115.314 0.2 26 km ( 16 mi) SW of Guadalupe Victoria, Mexico
MAP 3.3 2010/04/04 05:05:07 32.137 -115.318 0.1 26 km ( 16 mi) SW of Guadalupe Victoria, Mexico

A geothermal powerplant operates near GuadalupeVictoria to take advantage of the high ground heat relatively close to the surface.

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keep the data coming folks. I'm forwarding it someone in LA who said their "very large brick building is still rolling!"
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entire fault may go here ho9ld your breath looks like 4
6.9 4.0 4.1 3.4
now wait for after shocks
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Earthquake Details
Magnitude 4.1
Date-Time Sunday, April 04, 2010 at 22:49:44 UTC
Sunday, April 04, 2010 at 03:49:44 PM at epicenter

Location 38.804°N, 122.754°W
Depth 4 km (2.5 miles)
Region NORTHERN CALIFORNIA
Distances 4 km (3 miles) SW (219°) from Cobb, CA
5 km (3 miles) E (82°) from The Geysers, CA
6 km (4 miles) WNW (301°) from Anderson Springs, CA
23 km (14 miles) E (88°) from Cloverdale, CA
40 km (25 miles) N (354°) from Santa Rosa, CA
115 km (71 miles) WNW (284°) from Sacramento, CA

Location Uncertainty horizontal +/- 0.9 km (0.6 miles); depth +/- 3.6 km (2.2 miles)
Parameters Nph= 5, Dmin=5 km, Rmss=0.01 sec, Gp=166°,
M-type=local magnitude (ML), Version=1
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID nc71377626
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Magnitude 4.1 - NORTHERN CALIFORNIA
2010 April 04 22:49:44 UTC
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CNN reporting on it now.
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second one n cen cal
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Wow thats near the Tijuana area
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MAG DATE LOCAL-TIME LAT LON DEPTH LOCATION
y/m/d h:m:s deg deg km

6.9 2010/04/04 15:40:39 32.093N 115.249W 32.3 26 km (16 mi) SSW of Guadalupe Victoria, Baja California, Mexico
3.3 2010/04/04 15:34:48 32.184N 115.287W 0.2 20 km (13 mi) SW of Guadalupe Victoria, Baja California, Mexico
2.1 2010/04/04 07:02:48 32.566N 115.790W 9.3 27 km (17 mi) SSW of Seeley, CA
2.3 2010/04/04 03:44:53 32.599N 115.313W 30.5 16 km (10 mi) ESE of Mexicali, Baja California, Mexico
3.4 2010/04/04 02:36:25 32.227N 115.276W 4.1 17 km (11 mi) WSW of Guadalupe Victoria, Baja California, Mexico

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Earthquake Details
Magnitude 6.9
Date-Time Sunday, April 04, 2010 at 22:40:39 UTC
Sunday, April 04, 2010 at 03:40:39 PM at epicenter

Location 32.093°N, 115.249°W
Depth 32.3 km (20.1 miles)
Region BAJA CALIFORNIA, MEXICO
Distances 26 km (16 miles) SSW (211°) from Guadalupe Victoria, Baja California, Mexico
61 km (38 miles) SW (227°) from San Luis Río Colorado, Sonora, Mexico
64 km (40 miles) SW (225°) from San Luis, AZ
173 km (108 miles) ESE (106°) from Tijuana, Baja California, Mexico

Location Uncertainty horizontal +/- 5.8 km (3.6 miles); depth +/- 21.1 km (13.1 miles)
Parameters Nph=014, Dmin=76 km, Rmss=0.2 sec, Gp=292°,
M-type=local magnitude (ML), Version=1
Source California Integrated Seismic Net:
USGS Caltech CGS UCB UCSD UNR

Event ID ci14607652
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Felt yet another earthquake.
Back with more when USGS publishes some info about where and how strong.
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its the flex get ready
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Quoting ILwatcher:
Anybody know anything about a quake that just rocked CA?


Magnitude 6.9
Member Since: October 28, 2006 Posts: 57 Comments: 30562


Magnitude 7.2 - BAJA CALIFORNIA, MEXICO
2010 April 04 22:40:39 UTC
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Anybody know anything about a quake that just rocked CA?

Edit --- ah, right above me. thanks, keeper!
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Member Since: October 28, 2006 Posts: 57 Comments: 30562
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348. xcool





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Quoting MrstormX:


This storm pattern is more typical of late Spring and early Summer, than early Spring. Folks in the Midwest, keep your weather radio, news/radio of internet weather sources handy this evening!!
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ILZ036-040-041-047>050-051100-
CASS-FULTON-MASON-MENARD-MORGAN-SCHUYLER-SCOTT-
354 PM CDT SUN APR 4 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
ILLINOIS.

.DAY ONE...TONIGHT

A FRONTAL BOUNDARY MOVING THROUGH CENTRAL ILLINOIS THIS EVENING
AND OVERNIGHT WILL BRING THE POTENTIAL FOR SOME SEVERE
THUNDERSTORMS. LARGE HAIL WILL BE THE INITIAL THREAT...WITH
DAMAGING WINDS LATER AS THE STORMS ORGANIZE INTO A LINE ACROSS THE
MIDWEST.


THE ILLINOIS RIVER WILL CONTINUE IN FLOOD FROM HAVANA TO POINTS
DOWNSTREAM FOR THE NEXT SEVERAL DAYS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SEVERE STORMS WILL AGAIN BE POSSIBLE DURING THE LATE AFTERNOON AND
EVENING HOURS ON MONDAY ALONG AND NORTH OF A WARM FRONT THAT WILL
BE MOVING NORTHWARD THROUGH THE STATE. THIS FRONT WILL THEN
TRANSITION BACK TO A COLD FRONT AND PRODUCE ANOTHER SEVERE
THUNDERSTORM THREAT AS IT RETURNS SOUTHEASTWARD INTO THE AREA LATE
TUESDAY AFTERNOON AND TUESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED AFTER 5 PM.

$$
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000
NWUS53 KLOT 042129
LSRLOT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
429 PM CDT SUN APR 04 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0421 PM HAIL TINLEY PARK 41.57N 87.80W
04/04/2010 E0.75 INCH COOK IL TRAINED SPOTTER

AT 179TH STREET AND 84TH AVENUE.


&&

$$

BN


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Midwest has several Severe Thunderstorm Warnings in effect:
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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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