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Category: National and World

Life Threatening Situation W Tenn, E Ark, N Miss

| 8:11 am June 29, 2014

Scroll down for Brian’s usual excellent morning weather discussion, but there is serious flooding ongoing to our northwest this morning.

6-29-2014 8-08-45 AM

From the NWS Memphis: “This is turning into a life threatening situation. We went with emergency wording on the last FFW”

…FLASH FLOOD EMERGENCY FOR SHELBY…DESOTO AND TUNICA COUNTIES…

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS EXTENDED THE

* FLASH FLOOD WARNING FOR…
DESOTO COUNTY IN NORTHWEST MISSISSIPPI…
NORTHERN TUNICA COUNTY IN NORTHWEST MISSISSIPPI…
SHELBY COUNTY IN SOUTHWEST TENNESSEE…

* UNTIL 1030 AM CDT

THIS IS A FLASH FLOOD EMERGENCY FOR SHELBY…DESOTO AND TUNICA
COUNTIES.

* AT 709 AM CDT…DOPPLER RADAR ESTIMATES 4 TO 6 INCHES OF RAINFALL
HAS OCCURRED OVER THE PAST 6 HOURS. SHOWERS AND THUNDERSTORMS WILL
PRODUCE AN ADDITIONAL 2 TO 3 INCHES OF RAIN OVER THE NEXT 2 HOURS.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BARTLETT…
GERMANTOWN…MILLINGTON…HERNANDO…HORN LAKE…OLIVE BRANCH…
SOUTHAVEN…CORDOVA…MEEMAN SHELBY FOREST STATE PARK AND T O
FULLER STATE PARK.

THIS WARNING ALSO INCLUDES AREAS NEAR CORONEE LAKE…HORN LAKE…
HORSESHOE LAKE…LAKE MCKELLAR AND ROBCO LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

.FLOOD WATERS ARE MOVING DOWN THE NONCONNAH CREEK AND THE WOLF
RIVER. THE FLOOD CREST IS EXPECTED TO REACH 32.0 FEET BY 9 AM ON THE
NONCONNAH…AND 21.5 FEET ON THE WOLF RIVER BY NOON.

.MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE
INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE
USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS
POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING
FLOODED ROADS MAKE THE SMART CHOICE…TURN AROUND…DONT DROWN.

.DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

6-29-2014 8-09-48 AM

The above graphic shows the radar estimated rainfall amounts overnight and early this morning.

2014-06-29_07-33-16

THE SITUATION
They are referring to heavy rain and flash flooding event that is ongoing this morning in eastern Arkansas and western Tennessee.

The image is on Winchester in Germantown.

Heavy rain began during the early morning hours in this area as a moist flow (2.1 inch precipitable water values) across an old stalled outflow boundary and an upper level disturbance has led to prodigious rainfall amounts from showers and storms that have been lined up like trains along a track and moving over the same areas for hours.

3-6 inches of rain has fallen across eastern Arkansas from Newport to Des Arc and Clarendon, with a band of 3-5 inches rains extending through the Memphis area.

And more heavy rain is pointed at the Memphis area.

The first warnings came just before 4 a.m. and now flash flood warnings cover an unbroken area from near Batesville AR to Holly Springs MS.

REPORTS
4:55…Quince and White Station area of East Memphis: “prob 4 to 6 inches of water covering the whole street. Flowing very rapidly. Never seen like this here” – A stalled car was reported with the river trapped in that area.

6:00…”Park and Ridgeway, Poplar eastbound before Kirby and Macon at Houston Levee at the Kroger entrance flooded. Multiple cars stranded in high water”

7:24…Here’s info from a tweet by the Memphis FD: ” Winchester/Tchulahoma. Multiple vehicles submerged in water w parties trapped”

7:42…4.02″ in 24 hours in CoCoRaHS gauge at 7:35am 3 miles N of Bartlett TN.

So needless to say, travel in parts of eastern Arkansas and western Tennessee is a problem this morning.

FOR US IN ALABAMA
This activity will spread eastward into Northwest Alabama later this morning as the upper level disturbance lifts northeastward. The heavy rains will continue and flooding will be possible across the rest of northern Mississippi into Northwest Alabama as the moist flow continue and the storms propagate southeastward.

So expect another round of rain and storms later today across North and Northeast Alabama for areas mainly along and north of US-278. Rain chances are high in places like Florence, Huntsville, Arab and Fort Payne.

South of there, showers and storms will be fewer in number.

SIGNIFICANT SEVERE WEATHER AGAIN TODAY IN THE NORTHERN PLAINS
Explosive thunderstorms this afternoon are expected to bring very large hail to the northern Plains again. A moderate risk has been posted for parts of Nebraska, Kansas, Missouri and Iowa. Places like Des Moines, Cedar Rapids, Ames and Iowa City are under the gun for very large hail and the threat of a few tornadoes.

Your Weekly U.S. Drought Monitor Update

| 9:45 am May 29, 2014

5-29-2014 8-14-10 AM

All of the state of California continues to suffer from severe drought conditions or worse, and little to no relief is expected anytime soon. In Texas, recent rains have helped conditions to improve somewhat, especially in the western portions of the state, but it still wasn’t enough to bust the drought. The exceptional drought conditions persist in Texas, as well as Oklahoma, Colorado, Kansas, New Mexico and Nevada.

For Alabama, locations across the Tennessee Valley continue to be the driest areas. Abnormally dry conditions persist in Lauderdale, Colbert, Franklin, Lawrence, Limestone, Madison, Jackson, Marshall, and DeKalb counties. Last week’s analysis had 7.01% of the state suffering from these conditions. This week, 1.19% of the state has added back into this category, and the latest analysis shows 8.20% of the state suffering from abnormally dry conditions.

Last week, moderate drought conditions were impacting 0.54% of the state. This week, that number has remained the same. The moderate drought conditions are confined to the extreme northwestern corner of Alabama affecting parts of Lauderdale and Colbert counties. Hopefully the rain this week, and the scattered showers and storms in the forecast will help alleviate these conditions.

5-29-2014 8-14-55 AM

Click image to enlarge.

Meanwhile, In Another Ocean

| 8:49 am May 25, 2014

Yesterday at this time, we were talking about little bitty Tropical Storm Amanda. Today, we are talking about a category 4 beast of a hurricane. Amanda went through a rapid intensification cycle over the last 24 hours and is now a very powerful hurricane. She is likely to continue to intensify today, but thankfully, no land masses are in her immediate path.

rb_lalo-animated

…AMANDA BECOMES A CATEGORY 4 HURRICANE…

SUMMARY OF 200 AM PDT…0900 UTC…INFORMATION
———————————————-
LOCATION…11.7N 110.9W
ABOUT 670 MI…1075 KM SW OF MANZANILLO MEXICO
MAXIMUM SUSTAINED WINDS…140 MPH…220 KM/H
PRESENT MOVEMENT…WNW OR 295 DEGREES AT 5 MPH…7 KM/H
MINIMUM CENTRAL PRESSURE…946 MB…27.94 INCHES

5-25-2014 8-42-25 AM

WATCHES AND WARNINGS
——————–
THERE ARE NO COASTAL WATCHES OR WARNINGS IN EFFECT.

DISCUSSION AND 48-HOUR OUTLOOK
——————————
AT 200 AM PDT…0900 UTC…THE CENTER OF HURRICANE AMANDA WAS
LOCATED NEAR LATITUDE 11.7 NORTH…LONGITUDE 110.9 WEST. AMANDA IS
MOVING TOWARD THE WEST-NORTHWEST NEAR 5 MPH…7 KM/H. A TURN TOWARD
THE NORTH-NORTHWEST OR NORTH IS FORECAST TO OCCUR TONIGHT OR ON
MONDAY.

MAXIMUM SUSTAINED WINDS ARE NEAR 140 MPH…220 KM/H…WITH HIGHER
GUSTS. AMANDA IS A CATEGORY FOUR HURRICANE ON THE SAFFIR-SIMPSON
HURRICANE WIND SCALE. SOME ADDITIONAL STRENGTHENING COULD OCCUR
TODAY…BUT WEAKENING IS EXPECTED TO BEGIN ON MONDAY.

HURRICANE FORCE WINDS EXTEND OUTWARD UP TO 30 MILES…45 KM…FROM
THE CENTER…AND TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 80
MILES…130 KM.

THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 946 MB…27.94 INCHES.

Your Weekly U.S. Drought Monitor Update

| 9:49 am May 22, 2014

5-22-2014 8-24-22 AM

Little to no change in the drought conditions across much of the U.S. Terrible drought, categorized as exceptional, continues across the Southern Plains and along the West Coast. All of the state of California is suffering from severe drought conditions or worse, and little to no relief is expected anytime soon. In Texas, just over 25% of the state is experiencing exceptional drought conditions. However, there is some great news for the Lone Star State and the southern Plains. Over the next 5-7 days, several inches of rain are forecast to impact the drought stricken areas.

For Alabama, the rain last week helped improve conditions a bit. Locations across the Tennessee Valley continue to be the driest areas.  Abnormally dry conditions persist in Lauderdale, Colbert, Franklin, Lawrence, Limestone, Madison, Jackson, and DeKalb counties. Last week’s analysis had 8.86% of the state suffering from these conditions. This week, 1.85% of the state has been removed from this category, as the latest analysis shows only 7.01% of the state suffering from abnormally dry conditions.

Also last week, moderate drought conditions were affecting 2.12% of the state. This week, moderate drought conditions are only impacting 0.54% of the state, and are confined to the extreme northwestern corner of Alabama, affecting parts of Lauderdale and Colbert counties.

With little to no rain in the forecast, we are likely to see abnormally dry conditions expand across the state by the time next week’s monitor is released.

5-22-2014 8-25-09 AM

Click image to enlarge.

Your Weekly Drought Monitor Update

| 10:00 am May 15, 2014

5-15-2014 8-37-22 AM

Little to no change in the drought conditions across much of the U.S. Terrible drought, categorized as exceptional, continues across the Southern Plains and along the West Coast.

For Alabama, even though we received rain yesterday, much of the last week was dry. This has allowed areas across the Tennessee Valley to continue to dry out. Abnormally dry conditions are being reported in Lauderdale, Colbert, Franklin, Lawrence, Limestone, Madison, Morgan, Jackson, and DeKalb counties. Last week’s analysis had 5.32% of the state suffering from these conditions. This week, another 3.54% of the state was added, for a total of 8.86% of the state in abnormally dry conditions. As of now, all the very dry weather remains limited to the Tennessee Valley of the state.

Also last week, abnormally dry was the only category showing up in Alabama. This week, moderate drought conditions are back in Alabama and at this time, are confined to the far northwestern part of the state, affecting much of Lauderdale County, as well as portions of Limestone and Colbert counties. The moderate drought conditions amount to 2.12% of the state.

With little to no rain in the forecast the next seven days, we are likely to see abnormally dry conditions expand across the state.

5-15-2014 8-38-20 AM

Click image to enlarge.

82 mph Wind Gust in Omaha

| 8:13 pm May 11, 2014

Omaha dodged a bullet in the tornado department tonight as a supercell thunderstorm with a history of producing tornadoes morphed into a high precipitation beast of a storm that wrapped up into a large mesoscale convective vortex.

A powerful rear flank downdraft and gust front raced out ahead of the storm, pounding the Omaha area. Winds gusted to 82 mph at Eppley Airport in Omaha.

OMAHA/EPPLEY,NE (OMA) ASOS reports gust of 71.0 knots from W @ 0051Z KOMA 120052Z 27054G71KT 1/4SM R14R/1200VP6000FT +TSRA SQ FEW030CB BKN100 OVC110 18/17 A2955 RMK AO2 PK WND 27071/0051 WSHFT 0029 RAB10 SLP004 CONS LTGICCCCACG TS SW-OHD-NW MOV NE P0002 T01780167 $

Tornado watches continue tonight from Iowa to western Oklahoma, with severe thunderstorm warnings in the same area ahead of a cold front. There are two surface lows tonight, one moving into Wisconsin and another near Dodge City.

Another round of storms with a severe thunderstorm watch and several severe thunderstorm warnings across Illinois, Indiana and Ohio.

2014-05-11_20-11-05

IN ALABAMA
Thunderstorms are near Hamilton and DOuble Springs in Northwest Alabama. There are not strong, but there is lightning and brief heavy rain.

Confirmed Tornado Heading Toward Lincoln NE

| 5:25 pm May 11, 2014

2014-05-11_17-14-05

A supercell thunderstorm along the warm front in Nebraska is producing a confirmed tornado about 30 miles west southwest of Lincoln NE late this afternoon.

It is very near Beaver Crossing right now.

It is moving ENE at 25-30 mph and could affect parts of Lincoln within the hour.

ALABAMA UPDATE
Showers continue in the Birmingham area at this hour, generally along and west of I-65 from Bessemer to Fultondale to a large cell near Warrior /Smoke Rise. Others are north of Tuscaloosa right now.

Heavy showers over West Alabama are over Sumter, Greene and Hale Counties. Here is a current radar:

2014-05-11_17-24-46

It’s All About the Moisture!

| 1:17 pm May 11, 2014

Happy Mother’s Day to all the moms out there!

It’s been a nice Mother’s Day so far across Central Alabama with warm and muggy, but dry conditions across the area.

Click image to enlarge.

Click image to enlarge.

Temperatures were held back a bit during the morning by heavier clouds, but those clouds have eroded, allowing a nice field of puffy cumulus clouds to develop in the low level moisture. You can see that in the top left panel of the graphic above. Readings will top out in the middle 80s generally across the I-20 corridor, with some upper 80s to the south.

Regional radar mosaics are starting to show a rash developing from the Florida Panhandle through southwestern Alabama and across much of the state of Mississippi. The convective showers are in the deeper moisture axis that extends across this area. You can see that clearly in the larger panel of the graphic if you click and enlarge it.

It means that these showers and the storms that some of them will grow to become will be mainly over western Alabama this afternoon. Can’t rule out a stray one over the rest of the area, but when it comes to more numerous storms, it’s all about the moisture.

TONIGHT: You can expect partly cloudy skies as the heating of the day disappears allowing the showers to dissipate. Lows will be in the middle 70s.

MONDAY: Tomorrow will feature increasing high pressure, but warm and humid conditions will prevail. A few isolated storms will develop, but the chance you will find you is only around 1 in 5. Highs tomorrow will be a couple of degrees warmer that those of today.

SEVERE WEATHER TODAY: Severe weather is expected across a wide area today from Madison WI and Chicago to Kansas City and Abilene, with an enhanced area across southwestern Iowa, southeastern Nebraska and Central Kansas. A powerful upper trough is approaching the region from the west today with a surface low near Des Moines. Thunderstorms are active along the warm front over eastern Iowa with severe thunderstorm and tornado warnings having already been posted and tornado watches are in effect. The best chance for tornadoes today will extend from Omaha to Des Moines.