NewsSevere

Severe Weather, Hail, Flooding, 5/18/18

What happens in a Marginal Risk...

Friday brought a slightly unexpected round of severe weather across southeast Louisiana and southern Mississippi.  Although we knew 1 or 2 storms could reach severe criteria, I don’t believe anyone expected the number of warnings that were required.  All together, the National Weather Service in Slidell issued 19 Severe Thunderstorm Warnings today.

Hail reports ranged from 1/2″ near Pass Christian to 1.00″ in Baton Rouge and Kenner.  Other reports were 0.75″ in Covington and 0.88″ in Ponchatoula.

Winds were both estimated and measured close to 50mph in the strongest gusts, and in a microburst which effected the mid city area.  Widespread flooding also affected Central City, Treme and Bywater.

NEW Orleans [Orleans Co, LA] EMERGENCY MNGR reports FLASH FLOOD at 18 May, 5:02 PM CDT — EXTENSIVE FLOODING OF STREETS THROUGH CENTRAL CITY, TREME AND BYWATER NEIGHBORHOODS OF NEW ORLEANS. RADAR RAIN ESTIMATES INDICATED BETWEEN 3 AND 5 INCHES IN A SWATH FROM METAIRIE, THROUGH CITY PARK AND MID-CITY, INTO THE BYWATER AND LOWER NINTH WARD AREAS. SOME WATER IN BUSINESSES AND VEHICLES AT PEAK OF RAINFALL. MOST OF THE RAIN FELL BETWEEN 330 AND 600 PM.

NEW Orleans [Orleans Co, LA] BROADCAST MEDIA reports TSTM WND DMG at 18 May, 4:37 PM CDT — SOCIAL AND BROADCAST MEDIA IMAGES SHOW EXTENSIVE DAMAGE TO TENTS, SEMI-TRAILER, PERFORMANCE STAGE AND BOOTHS AT THE BAYOU BOOGALOO ON BAYOU ST. JOHN IN MID-CITY. WIND GENERATED FROM MICROBURST OF DEVELOPING THUNDERSTORM GENERATED ON LAKE BREEZE INTERACTING WITH AN OUTFLOW BOUNDARY. WINDS ESTIMATED 40 TO 49 MPH, BASED ON RADAR AND K7N0 OBSERVATION OF 49 MPH AT 423 PM CDT. TIME BASED ON RADAR.

Today’s rain totals:

Public Information Statement
National Weather Service New Orleans LA
734 PM CDT Fri May 18 2018

...RAINFALL REPORTS...

Location                     Amount    Time/Date       Lat/Lon              

...Louisiana...

...Ascension Parish...
Gonzales                     1.88 in   0720 PM 05/18   30.23N/90.91W        
3 N Gonzales                 0.77 in   0715 PM 05/18   30.27N/90.92W        
Welsh Gully Near Praireville 0.60 in   0700 PM 05/18   30.34N/90.97W        
Grand Goudine Bayou At Hwy 9 0.33 in   0630 PM 05/18   30.26N/90.96W        
Henderson Bayou Nr Port Vinc 0.33 in   0700 PM 05/18   30.30N/90.88W        
New River Canal Near Sorrent 0.30 in   0615 PM 05/18   30.19N/90.79W        

...East Baton Rouge Parish...
Baton Rouge Metro Ryan Field 0.92 in   0653 PM 05/18   30.53N/91.15W        
Alligator Bayou Near Kleinpe 0.69 in   0700 PM 05/18   30.32N/91.02W        
Bayou Fountain At Bluebonnet 0.61 in   0700 PM 05/18   30.35N/91.11W        
5 SE Baker                   0.58 in   0700 PM 05/18   30.53N/91.09W        
Claycut Bayou At Antioch     0.57 in   0700 PM 05/18   30.39N/91.01W        
Comite River Near Comite At  0.50 in   0715 PM 05/18   30.51N/91.07W        
Dawson Creek At Blue Bonnet  0.44 in   0700 PM 05/18   30.38N/91.09W        
Jones Creek @ Old Hammond    0.38 in   0700 PM 05/18   30.44N/91.04W        
4 W Pride                    0.34 in   0700 PM 05/18   30.70N/91.05W        
3 ESE Baker                  0.26 in   0700 PM 05/18   30.56N/91.10W        

...Iberville Parish...
1 N Carville                 0.36 in   0705 PM 05/18   30.24N/91.11W        
3 SE Gardere                 0.25 in   0723 PM 05/18   30.31N/91.10W        

...Jefferson Parish...
1 SSW Metairie               4.48 in   0524 PM 05/18   29.97N/90.19W        
3 ENE Metairie               4.36 in   0705 PM 05/18   30.02N/90.13W        
1 NNE Waggaman               3.76 in   0704 PM 05/18   29.96N/90.22W        
Harahan                      2.65 in   0719 PM 05/18   29.95N/90.20W        
1 E Bridge City              2.65 in   0600 PM 05/18   29.93N/90.14W        
2 ESE Kenner                 2.50 in   0717 PM 05/18   29.97N/90.22W        
Timberlane                   2.07 in   0723 PM 05/18   29.87N/90.04W        
1 ESE Metairie               1.96 in   0704 PM 05/18   29.99N/90.16W        
Gretna                       1.00 in   0713 PM 05/18   29.91N/90.05W        

...Livingston Parish...
1 WSW Walker                 0.86 in   0719 PM 05/18   30.47N/90.89W        
2 N Walker                   0.60 in   0704 PM 05/18   30.52N/90.86W        
Amite River At Denham Spring 0.60 in   0715 PM 05/18   30.46N/90.99W        
Amite River At French Settle 0.51 in   0700 PM 05/18   30.28N/90.78W        
Amite River At Port Vincent  0.47 in   0715 PM 05/18   30.33N/90.85W        
4 S Denham Springs           0.36 in   0720 PM 05/18   30.41N/90.95W        

...Orleans Parish...
2 NE Westwego                4.16 in   0704 PM 05/18   29.93N/90.11W        
New Orleans                  3.51 in   0656 PM 05/18   30.04N/90.03W        
2 NE New Orleans             3.32 in   0704 PM 05/18   30.00N/90.06W        
2 SSE New Orleans            3.12 in   0717 PM 05/18   29.94N/90.07W        
New Orleans                  2.52 in   0722 PM 05/18   29.97N/90.09W        
Lake Pontchartrain At West E 0.77 in   0700 PM 05/18   30.02N/90.12W        
Rigolets Near Lake Pontchart 0.62 in   0700 PM 05/18   30.16N/89.74W        
Lakefront Airport            0.57 in   0653 PM 05/18   30.04N/90.03W        

...Plaquemines Parish...
1 NNE Belle Chasse           1.24 in   0711 PM 05/18   29.87N/89.99W        
1 NE Belle Chasse            0.91 in   0723 PM 05/18   29.86N/89.99W        
Belle Chasse                 0.42 in   0729 PM 05/18   29.83N/90.00W        

...Pointe Coupee Parish...
Morganza                     1.80 in   0704 PM 05/18   30.72N/91.59W        

...St. Bernard Parish...
1 NW Chalmette               3.24 in   0704 PM 05/18   29.96N/89.98W        

...St. Charles Parish...
Boutte                       2.08 in   0719 PM 05/18   29.89N/90.41W        
3 E Boutte                   0.35 in   0542 PM 05/18   29.90N/90.34W        

...St. James Parish...
Gramercy                     3.72 in   0704 PM 05/18   30.05N/90.70W        
Gramercy                     1.22 in   0710 PM 05/18   30.06N/90.70W        
Gramercy                     1.20 in   0719 PM 05/18   30.06N/90.70W        
1 SSW Gramercy               1.03 in   0730 PM 05/18   30.04N/90.70W        
1 S Lutcher                  1.01 in   0723 PM 05/18   30.04N/90.71W        
4 E Convent                  0.36 in   0705 PM 05/18   30.01N/90.76W        
1 NE Gramercy                0.28 in   0720 PM 05/18   30.07N/90.68W        

...St. John The Baptist Parish...
1 ESE Laplace                0.61 in   0730 PM 05/18   30.06N/90.45W        

...St. Tammany Parish...
1 W Abita Springs            0.80 in   0718 PM 05/18   30.48N/90.06W        
Abita Springs At Hwy 36      0.60 in   0630 PM 05/18   30.48N/90.04W        
Pearl River Navigation Canal 0.41 in   0700 PM 05/18   30.46N/89.78W        
1 NNE Eden Isle              0.40 in   0704 PM 05/18   30.25N/89.79W        
1 S Slidell                  0.28 in   0704 PM 05/18   30.26N/89.78W        
Covington #3 At Boston Stree 0.26 in   0630 PM 05/18   30.48N/90.09W        

...Tangipahoa Parish...
1 E Kentwood                 0.41 in   0700 PM 05/18   30.94N/90.49W        

...Maritime Stations...
Lake Pontchartrain At Lakefr 0.32 in   0700 PM 05/18   30.05N/90.03W        

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers 
for their dedication. Not all data listed are considered official.

 

Today’s Wind Reports:

Public Information Statement
National Weather Service New Orleans LA
741 PM CDT Fri May 18 2018

...WIND REPORTS...
Peak winds greater than or equal to 20 mph between 1 pm and 7 pm CDT. 

Location                     Speed     Time/Date       Lat/Lon              

...Louisiana...

...Ascension Parish...
3 SSW Gonzales               23 MPH    0650 PM 05/18   30.17N/90.94W        

...East Baton Rouge...
Baton Rouge Metro Ryan Field 45 MPH    0531 PM 05/18   30.53N/91.15W        
4 S Baker                    21 MPH    0420 PM 05/18   30.52N/91.16W          

...Jefferson Parish...
New Orleans Intl Airport     45 MPH    0541 PM 05/18   29.99N/90.26W        
Waggaman                     42 MPH    0538 PM 05/18   29.94N/90.23W        
2 ESE Kenner                 32 MPH    0552 PM 05/18   29.97N/90.22W        
Harahan                      31 MPH    0455 PM 05/18   29.95N/90.20W        
1 NNW Metairie               30 MPH    0525 PM 05/18   30.01N/90.18W        
1 SSW Metairie               28 MPH    0525 PM 05/18   29.98N/90.19W        
2 NNE Bridge City            27 MPH    0530 PM 05/18   29.96N/90.15W        
Gretna                       26 MPH    0543 PM 05/18   29.91N/90.05W        
Timberlane                   26 MPH    0453 PM 05/18   29.87N/90.04W        
2 NNE Kenner                 25 MPH    0515 PM 05/18   30.01N/90.24W        
1 ENE Harvey                 23 MPH    0504 PM 05/18   29.90N/90.05W        
1 SSE Marrero                22 MPH    0504 PM 05/18   29.87N/90.11W        

...Lafourche Parish...
South Lafourche Airport      29 MPH    0655 PM 05/18   29.44N/90.26W        
8 S Leeville                 21 MPH    0355 PM 05/18   29.12N/90.20W        

...Orleans Parish...
New Orleans                  49 MPH    0423 PM 05/18   30.04N/90.03W        
Lakefront Airport            45 MPH    0540 PM 05/18   30.04N/90.03W        
New Orleans                  38 MPH    0432 PM 05/18   29.97N/90.09W        
4 SSE East New Orleans       37 MPH    0613 PM 05/18   30.00N/89.90W        
2 NW New Orleans             33 MPH    0430 PM 05/18   30.00N/90.11W        
1 SSE New Orleans            29 MPH    0414 PM 05/18   29.95N/90.08W        
1 W New Orleans              27 MPH    0435 PM 05/18   29.97N/90.10W        
2 NE Westwego                25 MPH    0435 PM 05/18   29.93N/90.11W        
2 ENE Terrytown              20 MPH    0550 PM 05/18   29.92N/90.00W        


...Plaquemines Parish...
New Orleans Nas              39 MPH    0452 PM 05/18   29.83N/90.00W        
1 NNE Belle Chasse           23 MPH    0456 PM 05/18   29.87N/89.99W        
Bootheville                  22 MPH    0451 PM 05/18   29.33N/89.42W        
8 SE Venice                  21 MPH    0318 PM 05/18   29.18N/89.26W        
West Closure Cpx1            21 MPH    0600 PM 05/18   29.82N/90.07W        
1 NE Belle Chasse            21 MPH    0453 PM 05/18   29.86N/89.99W        
Belle Chasse                 20 MPH    0419 PM 05/18   29.83N/90.00W        
    

...St. Bernard Parish...
Chalmette                    25 MPH    0445 PM 05/18   29.94N/89.95W        
Chalmette                    21 MPH    0419 PM 05/18   29.95N/89.97W             

...St. Charles Parish...
3 SSE Des Allemands          27 MPH    0606 PM 05/18   29.79N/90.42W        
3 E Boutte                   20 MPH    0537 PM 05/18   29.90N/90.34W        

...St. James Parish...
Gramercy                     45 MPH    0533 PM 05/18   30.06N/90.70W        
1 S Lutcher                  43 MPH    0543 PM 05/18   30.04N/90.71W        
1 WNW Convent                27 MPH    0534 PM 05/18   30.03N/90.84W        
Gramercy                     23 MPH    0530 PM 05/18   30.05N/90.69W        
Gramercy                     22 MPH    0529 PM 05/18   30.05N/90.70W        
1 SSW Gramercy               20 MPH    0538 PM 05/18   30.04N/90.70W        
 

...St. John The Baptist Parish...
1 WNW Reserve                39 MPH    0515 PM 05/18   30.09N/90.58W        
1 ESE Laplace                23 MPH    0559 PM 05/18   30.06N/90.45W        

...St. Tammany Parish...
Slidell                      26 MPH    0610 PM 05/18   30.28N/89.78W        
Slidell Airport              24 MPH    0553 PM 05/18   30.34N/89.82W        
1 NNW Lacombe                21 MPH    0547 PM 05/18   30.32N/89.94W        
2 N Madisonville             20 MPH    0151 PM 05/18   30.44N/90.16W        
2 W Madisonville             20 MPH    0154 PM 05/18   30.39N/90.21W        
1 NW Mandeville              20 MPH    0155 PM 05/18   30.39N/90.10W        

...Tangipahoa Parish...
Hammond                      29 MPH    0115 PM 05/18   30.52N/90.43W        

...Terrebonne Parish...
3 SE Houma                   28 MPH    0646 PM 05/18   29.54N/90.67W        
2 SW Dulac                   24 MPH    0509 PM 05/18   29.35N/90.73W              


...Mississippi...

...Hancock Parish...
Stennis Intl Ap              25 MPH    0650 PM 05/18   30.37N/89.45W        

...Harrison Parish...
3 WSW Gulfport               32 MPH    0143 PM 05/18   30.36N/89.11W        
Gulfport-biloxi Regional Air 28 MPH    0153 PM 05/18   30.41N/89.07W        
Keesler Afb                  23 MPH    0256 PM 05/18   30.40N/88.92W        
8 NNW Biloxi                 22 MPH    0350 PM 05/18   30.52N/88.98W        
1 SW Gulfport                21 MPH    0655 PM 05/18   30.37N/89.09W        
2 WNW Biloxi                 20 MPH    0406 PM 05/18   30.43N/88.98W        
     

...Jackson Parish...
Pascagoula Lott Intl Arpt    23 MPH    0153 PM 05/18   30.46N/88.53W        
        

...Pike Parish...
2 NNW Magnolia               20 MPH    0409 PM 05/18   31.19N/90.48W        
     

...Louisiana...

...Maritime Stations...
5 WSW East New Orleans       39 MPH    0541 PM 05/18   30.04N/90.02W        
12 SSW Mandeville            36 MPH    0523 PM 05/18   30.20N/90.12W        
4 ENE Metairie               28 MPH    0424 PM 05/18   30.03N/90.11W        
Mandeville                   28 MPH    0200 PM 05/18   30.36N/90.09W        
31 E Venice                  22 MPH    0515 PM 05/18   29.30N/88.84W        
24 S Venice                  21 MPH    0342 PM 05/18   28.93N/89.41W        
Gomex West Delta 27a         21 MPH    0615 PM 05/18   29.12N/89.55W        
55 E Venice                  20 MPH    0235 PM 05/18   29.25N/88.44W        
69 E Venice                  20 MPH    0430 PM 05/18   29.20N/88.20W        


...Mississippi...
11 SSE Gulfport              31 MPH    0709 PM 05/18   30.23N/88.98W        
1 NNE Bay Saint Louis        30 MPH    0118 PM 05/18   30.33N/89.33W        
10 SSE Pascagoula            25 MPH    0554 PM 05/18   30.21N/88.50W        
        

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers 
for their dedication. Not all data listed are considered official.

 

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