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Texas/New Mexico/Louisiana/Mexico Obs And Discussion Thread Part 7

wxmx

By wxmx,
in Central/Western States

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Chinook

Chinook

Posted
Posted

 

  SOUTHEASTERN GRIMES COUNTY IN SOUTHEASTERN TEXAS...

  NORTHWESTERN HARRIS COUNTY IN SOUTHEASTERN TEXAS...

* AT 141 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING

  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS OCCURRING.

  THIS IS A FLASH FLOOD EMERGENCY. THIS IS A PARTICULARLY DANGEROUS

  SITUATION. NUMEROUS HIGH WATER RESCUES ARE OCCURRING DUE TO 5 TO 10

  INCHES OF RAINFALL WITH ADDITIONAL HEAVY RAINFALL ALSO EXPECTED.

Grimes/Harris Counties near Houston

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My Weather Today

My Weather Today

Posted
Posted

KHGX radar estimates up to 4.4" of rain per hour north of Katy TX. And all that just from 50dBz radar reflectivity.

I emptied the rain gauge at 5.70 inches of rain as of 1:00am CDT. The first time I've ever had to empty my rain gauge during a rain event. I have gotten absolutely hammered off and on all night long.

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Stebo

Stebo

Posted
Posted

IAH got pounded in the last 6 hours, sadly their rain gauge went out after 1041z observation but at that point they had 9.39" from 0553Z to 1041Z including almost 4 inches in the 0553-0653Z hour.

 

KIAH 181041Z 02012 3SM +TSRA BR FEW008 BKN027CB OVC045 18/18 A2998 RMK A02 SLPNO PK WND 36029/1001 WSHFT 0953 PRESFR FRQ LTGICCC TS ALQDS MOV NE P0206
KIAH 180953Z 31020G24KT 1/16SM R27/3000VP6000FT +TSRA FG OVC005CB 18/18 A3000 RMK AO2 PK WND 13030/0854 SLP157 CONS LTGICCG TS OHD MOV NE P0319 T01830183 $
KIAH 180853Z 13022G31KT 7SM -TSRA BKN009CB OVC017 21/21 A2993 RMK AO2 PK WND 13031/0847 TSB14 SLP136 CONS LTGICCCCG TS VC S-W-N MOV NE P0002 60414 T02110211 58037
KIAH 180753Z 09010KT 8SM -RA OVC009 20/20 A2998 RMK AO2 TSE40 PRESFR SLP150 OCNL LTGICCC DSNT W NE TS MOVD NE CB DSNT W NE MOV NE P0021 T02000200
KIAH 180653Z 07007KT 1SM R27/3000VP6000FT +TSRA BR FEW004 BKN011CB OVC020 18/18 A3002 RMK AO2 SLP166 CONS LTGICCG TS W-NE MOV NE P0391 T01780178

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dan11295

dan11295

Posted
Posted

Latest storm reports indicate I-10 is flooding now

 

0719 AM     FLASH FLOOD      1 NW HOUSTON            29.78N  95.40W
04/18/2016                   HARRIS             TX   COUNTY OFFICIAL

            WATER STARTING TO OVERTOP INTERSTATE 10 AT WHITE OAK
            BAYOU.
 

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Chicago Storm

Chicago Storm

Posted
Posted

IAH got pounded in the last 6 hours, sadly their rain gauge went out after 1041z observation but at that point they had 9.39" from 0553Z to 1041Z including almost 4 inches in the 0553-0653Z hour.

KIAH 181041Z 02012 3SM +TSRA BR FEW008 BKN027CB OVC045 18/18 A2998 RMK A02 SLPNO PK WND 36029/1001 WSHFT 0953 PRESFR FRQ LTGICCC TS ALQDS MOV NE P0206

KIAH 180953Z 31020G24KT 1/16SM R27/3000VP6000FT +TSRA FG OVC005CB 18/18 A3000 RMK AO2 PK WND 13030/0854 SLP157 CONS LTGICCG TS OHD MOV NE P0319 T01830183 $

KIAH 180853Z 13022G31KT 7SM -TSRA BKN009CB OVC017 21/21 A2993 RMK AO2 PK WND 13031/0847 TSB14 SLP136 CONS LTGICCCCG TS VC S-W-N MOV NE P0002 60414 T02110211 58037

KIAH 180753Z 09010KT 8SM -RA OVC009 20/20 A2998 RMK AO2 TSE40 PRESFR SLP150 OCNL LTGICCC DSNT W NE TS MOVD NE CB DSNT W NE MOV NE P0021 T02000200

KIAH 180653Z 07007KT 1SM R27/3000VP6000FT +TSRA BR FEW004 BKN011CB OVC020 18/18 A3002 RMK AO2 SLP166 CONS LTGICCG TS W-NE MOV NE P0391 T01780178

Never thought I'd see a 1/16th mile vis OBS from just rain.
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My Weather Today

My Weather Today

Posted
Posted

I emptied the rain gauge at 5.70 inches of rain as of 1:00am CDT. The first time I've ever had to empty my rain gauge during a rain event. I have gotten absolutely hammered off and on all night long.

 I accumulated another 6.0 inches of rain since i measured the 5.70 inches at 1:00am. The event total so far at my house is 11.80 inches of rain (0.10 on Saturday).

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Jebman

Jebman

Posted
Posted

Stay safe in Houston. Wow folks! Awesome rain tallies there!

 

We have just managed to eke out a little over an inch from drizzle. My intuition was correct yesterday.

I'd say Buda has a good chance of drizzle thru tonight, maybe a passing light shower.

 

All the forcing is over southeast Texas lol.

 

Sunday and Monday we were forecast at a 100 percent probability of heavy rain and storms. It was delayed and delayed and finally we had hours of clouds and finally just light drizzle as the forcing moved to Houston lol.

Sure we got a small amount of rain mostly in the form of drizzle but for this location this is a classic Texan rain bust.

 

It is sure NO bust for Houston though. Stay very safe!

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jm1220

jm1220

Posted
Posted

Looks like it's all about done for this area. Had a few showers today where I am, that's about it. The sun came out around sunset-actually became partly cloudy for a time. We lucked out here, pretty much everywhere came in on the low end, often underneath expected totals. The airport may not have even reached 1.5". 

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NTXYankee

NTXYankee

Posted
Posted

With all the Houston flooding this has kind of slipped under the radar, D3 "Slight" along I35 for possibly another round of hailers

 

263d1di.png

Given model performance lately, don't even want to jump on this one. Might have better luck determining when an outflow boundary will blow through.

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Chinook

Chinook

Posted
Posted

Looks like there will be a few scattered severe storms in central TX tomorrow, well west of I-35. Weak convergence, CAPE values of 3000 J/kg, and shear values of 30-45kt will contribute. Note: updated day-2 outlook (valid for Wednesday) has reduced the risk to Marginal for central TX to DFW.

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bubba hotep

bubba hotep

Posted
Posted

Looks like there will be a few scattered severe storms in central TX tomorrow, well west of I-35. Weak convergence, CAPE values of 3000 J/kg, and shear values of 30-45kt will contribute. Note: updated day-2 outlook (valid for Wednesday) has reduced the risk to Marginal for central TX to DFW.

Looks like timing issues with the main s/w sending a line of storms through N. Texas late tonight or early tomorrow. Then questions on how quickly the atmosphere can recover and what forcing mechanism would there be for storms. These types of setups can be sneaky in N. Texas, so something for us local weenies to watch tomorrow afternoon.

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weatherextreme

weatherextreme

Posted
Posted

From a local DFW met

 

 

 

 

Steve Mccauley

 

3 hrs · 

A squall line will move into north Texas after midnight and sweep to the southeast and will exit the Metroplex before the sun comes up. The severe weather threat is low. This will be mainly a brief heavy rain, small hail, and gusty wind event. But it is Texas in April, so it is not out of the question that some storms could achieve marginal severe levels.

Rainfall amounts will vary greatly. Some parts of the storm line will be weak and will only produce a few hundredths of an inch of rain. There will be no hail at all and only modest winds, and folks will sleep right through it. They will wake up and say, "Where was the squall line we were supposed to get?" 

Other parts of the squall line, however, may wake people up from a sound sleep and produce a quick inch of rain in a heavy downpour along with the rattle of small hail and wind gusts approaching 50 mph.

The atmosphere will then become very unstable Wednesday afternoon, and that is usually a cause for concern. But there should be widespread sinking air taking place behind our predawn squall line, and this should shut down any thunderstorm that tries to pop in the heat of the afternoon.

Speaking of unstable atmospheric conditions ... the atmosphere will become EXTREMELY unstable next week, and so we will be watching to see if the cap - which is expected to come roaring back over north Texas next week - if it will be able to shut down any potential severe weather outbreak.

Stay tuned.

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radarman

radarman

Posted
Posted

The 00z FWD sounding was pretty unimpressive... surface instability will be on the wane while there isn't much elevated instability at all.  Lapse rates are pretty mediocre.  Winds aloft are OK, but weak at the surface with little in the way of helicity.   There will be some frontogenetic lift, but I suspect this will weaken substantially as it moves east.

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