MAY 2019: Wednesday Storm Complex/Scattered Showers To End May

[bikerack]

Got ~5.5" of rain in the front of Kingwood between 3:45-4:30. Dime sized hail. Another 15 mins and it would have been in the house. The water made it higher than it ever did during Harvey or the preceding flood storms. Took a good hour for the streets to clear of water.

The elementary school was just about to let out so cars were stacked on the main road when the storm hit. 3 or 4 are still there so I assume they flooded out.

Also lost a medium sized branch from our maple tree in the backyard. Came within a few feet of hitting the roof, which was scheduled to be replaced today. Might have to wait until week after next now based on the forecast.

Edited to add that Kingwood HS flooded again. Saw video of students sweeping the water out one door while it was coming in the other one. Heard a rumor that Kingwood Park HS also flooded but haven't seen proof.

[Andrew]

Pretty amazing how many tornado warnings there have been across the region today. Highly unusual for this region. Most models including the GFS were hinting that tonight would have the best chance for strong storms and that is seeing more and more likely.

[Ounce]

Pretty amazing how many tornado warnings there have been across the region today. Highly unusual for this region. Most models including the GFS were hinting that tonight would have the best chance for strong storms and that is seeing more and more likely.

lots of shear?

[Cpv17]

It kinda looks like the worst of the line is going more towards Victotria and Corpus and the part headed towards us is mainly just moderate rain. Unless it fills back in?

[Hrtb]

Our home in Kingwood flooded with Harvey - but thankfully we didn’t even come close to flooding today... but so many people in Kingwood did get some water in their home with this storm. The rain was unbelievable! This picture was taken today at Maplebrook elementary (1960 and West lake houston parkway facing towards Kingwood). There is a definite line of large trees, fences, and debris by the large HEB at west lake houston and Kingwood Drive.

[Andrew]

Interesting to note the split in the heaviest convection is currently on track to move through most of Central SE Texas. Models do show some intensification in this area, but it will be interesting to watch.

[Andrew]

Pretty amazing how many tornado warnings there have been across the region today. Highly unusual for this region. Most models including the GFS were hinting that tonight would have the best chance for strong storms and that is seeing more and more likely.

lots of shear?

Eh, more like plenty of instability. Shear isn't bad though, that is why we were seeing some tornadoes through the day.

[unome]

Southern Plains Storm Total Precip composite loop: http://tempest.aos.wisc.edu/radar/spPcomphtml5.html

Important Precipitation Composite info

These maps of NEXRAD estimated storm accumulated precipitation are created by compositing the NEXRAD Level 3 storm total precip product (NTP) from many different radar sites. Each radar site defines the time range of accumulation as "since the last time this radar switched from clear air mode to precipitation mode," thus the time range of accumulation varies for each site.

As each NEXRAD site will have a different time range, it doesn't really make sense to attribute a time range to the composites, since any time range wouldn't apply to the entire picture. The composites can give an idea on how much radar estimated precipitation has fallen over a region, but be aware that the time range for each contributing NEXRAD site varies.

The National Weather service plots of Storm Total Precipitation do include the start and end times for the accumulated precip for each radar site (on the right side, right above the image,) so those could be consulted to help make sense of the values seen in the composites.

[Ounce]

Severe Weather Statement
National Weather Service Austin/San Antonio TX
951 PM CDT Fri May 3 2019

TXC013-163-255-493-040330-
/O.CON.KEWX.SV.W.0078.000000T0000Z-190504T0330Z/
Karnes TX-Frio TX-Atascosa TX-Wilson TX-
951 PM CDT Fri May 3 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT
FOR KARNES...EASTERN FRIO...ATASCOSA AND SOUTHWESTERN WILSON
COUNTIES...

At 951 PM CDT, severe thunderstorms were located along a line
extending from 7 miles north of Runge to 11 miles southwest of Falls
City to Charlotte to near Dilley, moving southeast at 35 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Pleasanton, Pearsall, Floresville, Jourdanton, Dilley, Poteet,
Kenedy, Karnes City, Poth, Charlotte, Christine, Campbellton,
Kosciusko, Runge, Falls City, North Pearsall, Goldfinch, Cestohowa,
Schattel and Derby.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature`s leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 2864 9834 2866 9919 2900 9907 2907 9839
2919 9797 2881 9758 2873 9769 2869 9788
2872 9792 2869 9801 2879 9810 2861 9833
TIME...MOT...LOC 0251Z 317DEG 30KT 2900 9773 2891 9820 2886 9872 2863
9911

HAIL...0.75IN
WIND...60MPH

$$

CP

[unome]

lightning - a sparky night http://map.blitzortung.org/#5.3/31.413/-93.439

[Ounce]

I hope the League City folks are getting there night time meal, now, before the bottom falls out. The Austin office is probably ready for this to end and pass it along to League City NWS.

[Rip76]

May be a rain event for us tonight.

Or it all goes South, Victoria- way.

[Ounce]

Severe Thunderstorm Warning
TXC025-175-297-469-040345-
/O.NEW.KCRP.SV.W.0028.190504T0253Z-190504T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Corpus Christi TX
953 PM CDT Fri May 3 2019

The National Weather Service in Corpus Christi has issued a

* Severe Thunderstorm Warning for...
Victoria County in south central Texas...
Goliad County in south central Texas...
Central Live Oak County in south central Texas...
Bee County in south central Texas...

* Until 1045 PM CDT.

* At 952 PM CDT, severe thunderstorms were located along a line
extending from 6 miles west of Ezzell to near Crowther, moving
southeast at 35 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
Victoria, Beeville, George West, Goliad, Three Rivers, Guadalupe,
Fannin, Victoria Colony Creek Country Club, Weesatche, River Creek
Acres, Weser, Nursery, Victoria Riverside Park, Victoria College,
Victoria Mall, Saxet Lakes, Karon, Inez, Salem and Normanna.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Corpus Christi.

&&

LAT...LON 2902 9683 2892 9679 2885 9670 2882 9672
2877 9670 2817 9809 2860 9834 2879 9810
2869 9801 2872 9792 2867 9778 2892 9742
2887 9730 2910 9698
TIME...MOT...LOC 0252Z 326DEG 29KT 2930 9701 2860 9842

HAIL...0.75IN
WIND...60MPH

$$

PH

[Ounce]

From Corpus:

Severe Thunderstorm Warning
TXC283-297-311-040400-
/O.NEW.KCRP.SV.W.0029.190504T0307Z-190504T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Corpus Christi TX
1007 PM CDT Fri May 3 2019

The National Weather Service in Corpus Christi has issued a

* Severe Thunderstorm Warning for...
Eastern La Salle County in south central Texas...
McMullen County in south central Texas...
West central Live Oak County in south central Texas...

* Until 1100 PM CDT.

* At 1006 PM CDT, severe thunderstorms were located along a line
extending from near Campbellton to near Los Angeles, moving
southeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.

* Locations impacted include...
Choke Canyon, Tilden, Calliham, Cross, Zella, Fowlerton, Crowther,
Los Angeles and Simmons.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2861 9834 2862 9832 2826 9813 2814 9897
2851 9920 2864 9869 2864 9834
TIME...MOT...LOC 0306Z 315DEG 24KT 2871 9834 2848 9906

HAIL...1.00IN
WIND...60MPH

$$

PH

[Cromagnum]

The derecho near Victoria means business. I wonder if it goes south or east.

[Belmer]

It appears the MCS is showing signs of strengthening and has developed more on its northern flank. This line that seems to be developing quite well is moving more eastward than sse/se. If it can maintain intensity, which it very well may do, Houston should finally get in on the action that the rest of Texas has been getting the last few days. Areas south of I-10 will need to monitor this closer with the potential for straight line winds pea to nickel size hail and even a possible quick spin-up isn't out of the question. Will need to see if a good outflow boundary pushes out ahead of the main line.

[Cromagnum]

I'm amazed the atmosphere was still energized enough for another round. I thought for sure the earlier storms worked everything over.

[Belmer]

I'm amazed the atmosphere was still energized enough for another round. I thought for sure the earlier storms worked everything over.

That's true for areas north of I-10. They had a line of storms come down I-45 Thursday morning before quickly collapsing as it reached the I-10 corridor. They also had a round late last night and then some action up there earlier this afternoon. Places south of I-10 have been fairly quiet all week with little if any rain. So atmosphere hasn't been worked over and the cap is not a problem like it has been all week for those areas. I don't see much in the way for these storms to significantly weaken/collapse in the next 1-2 hours.

[Rip76]

Still holding together for Houston.

[Belmer]

Starting to see signs of rotation SW of Sugar Land. Currently a Severe Thunderstorm Warning -

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Houston/Galveston TX
113 AM CDT Sat May 4 2019

The National Weather Service in League City has issued a

* Severe Thunderstorm Warning for...
Eastern Wharton County in southeastern Texas...
Southern Fort Bend County in southeastern Texas...
Northwestern Brazoria County in southeastern Texas...

* Until 200 AM CDT.

* At 113 AM CDT, a severe thunderstorm was located near Needville, or
7 miles south of Rosenberg, moving east at 35 mph.

HAZARD...70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.

* Locations impacted include...
Sugar Land, Missouri City, Rosenberg, Stafford, Richmond, First
Colony, Fresno, Needville, Pleak, Fairchilds, Beasley, Kendleton,
Thompsons, Greatwood, New Territory, Fifth Street, Sienna
Plantation, Brazos Bend State Park, Fort Bend Houston and Cumings.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 2952 9600 2964 9555 2961 9549 2931 9547
2929 9598
TIME...MOT...LOC 0613Z 264DEG 30KT 2944 9584

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH