Alert archive / Texas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 93, NWS Houston/Galveston, TX

May 27, 20206 counties in Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 27, 2020, 5:06 PM CDT for 6 counties in Texas. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 27, 2020, 5:06 PM CDT (22:06 UTC)
Expired: May 27, 2020, 6:00 PM CDT
In force: 54 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Brazoria County, TX, Chambers County, TX, Fort Bend County, TX, Galveston County, TX, Harris County, TX, Liberty County, TX

The radar

The Houston radar (KHGX), 18 km from the middle of the area, began a volume at 22:08 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 27, 1:24 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.1 hours before the alert went out and 196 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 827 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 1257 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 27, 4:44 PM CDT, 22 minutes earlier.

Area forecast discussion, May 27, 4:44 PM CDT, 22 minutes before

Area Forecast Discussion
National Weather Service Houston/Galveston TX
444 PM CDT Wed May 27 2020

.DISCUSSION...

A cluster of strong to severe thunderstorms have move across the
northern counties and are now making their way across the central
regions of the CWA. Some of these storms produced winds of around
45 MPH with gusts up to around 60 MPH. Pea to golf ball size hail
(up to 1.75 inches) has been reported along with frequent to
intense lightning. For the rest of today, strong to severe
thunderstorms with the potential to produce damaging winds, hail,
heavy to torrential rainfall, and frequent to intense lightning
are expected to continue to develop. The Severe Thunderstorm Watch
will continue in effect through 9 PM CDT tonight. Showers and
thunderstorms will gradually decrease overnight into early
Thursday morning.

Another round of showers and thunderstorms expected Thursday
throughout the day. Hazards with these storms will be damaging
winds and hail, although not as intense/widespread as todays
activity. SPC Day 2 Outlook continues the Marginal Risk for Severe
Thunderstorms across all of SE Texas. Activity will dissipate
Thursday night.

Dry weather pattern and a warming trend expected Friday into the
upcoming week. 24

&&

.MARINE...

Showers and thunderstorms expected to move across the local
waters late afternoon and evening today, some with the potential
to become strong to severe. A Severe Thunderstorm Watch remains
in effect for the nearshore waters through 9 PM CDT today. Light
and variable winds with periods of showers and thunderstorms
expected through Friday. A frontal boundary will move through the
area early Friday ushering in light to moderate offshore winds.
Easterly winds expected this weekend into early next week. Onshore
flow returns midweek. 24

&&

.PRELIMINARY POINT TEMPS/POPS...
College Station (CLL)      64  84  67  87  65 /  80  40  10   0   0
Houston (IAH)              70  88  69  89  70 /  60  50  10  10   0
Galveston (GLS)            76  83  75  85  76 /  30  40  20  10   0

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...NONE.
&&

Discussion/Aviation/Marine...24

In the hours before

Local storm report, May 27, 4:25 PM CDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
425 PM CDT WED MAY 27 2020

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

0415 PM     TSTM WND GST     4 ENE BROOKSHIRE        29.80N 95.90W
05/27/2020  M60 MPH          WALLER             TX   AWOS

            WIND GUST WAS MEASURED AT THE HOUSTON
            EXECUTIVE AIRPORT (KTME).

&&

Local storm report, May 27, 4:29 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
429 PM CDT WED MAY 27 2020

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

0420 PM     TSTM WND GST     3 N SPRING              30.12N 95.41W
05/27/2020  E70 MPH          MONTGOMERY         TX   BROADCAST MEDIA

            STRONG WIND GUSTS HAVE DOWNED TREES IN THE
            SPRING AREA.

&&

Local storm report, May 27, 4:34 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
434 PM CDT WED MAY 27 2020

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

0425 PM     TSTM WND DMG     1 S KATY                29.78N 95.82W
05/27/2020                   FORT BEND          TX   EMERGENCY MNGR

            POWER LINES DOWN IN THE KATY AREA.

&&

Local storm report, May 27, 4:36 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
436 PM CDT WED MAY 27 2020

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

0421 PM     TSTM WND GST     5 W HUMBLE              29.99N 95.34W
05/27/2020  M59 MPH          HARRIS             TX   ASOS

            WIND GUST WAS MEASURED AT KIAH ASOS.

&&

Local storm report, May 27, 4:39 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
439 PM CDT WED MAY 27 2020

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

0259 PM     FUNNEL CLOUD     3 NE SANTA FE           29.41N 95.07W
05/27/2020                   GALVESTON          TX   LAW ENFORCEMENT

            FUNNEL CLOUD WAS SIGHTED.

&&

Local storm report, May 27, 5:04 PM CDT, 2 minutes before

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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 26, 7:12 PM CDT	Special Weather Statement	HGX	Chambers	48 min
May 26, 7:17 PM CDT	Severe Thunderstorm Warning	HGX	Chambers, Liberty	43 min
May 26, 7:24 PM CDT	Areal Flood Advisory	HGX	Chambers, Liberty	66 min
May 26, 8:23 PM CDT	Special Weather Statement	HGX	Chambers	52 min
May 26, 9:25 PM CDT	Special Weather Statement	HGX	Chambers	50 min
May 26, 9:30 PM CDT	Areal Flood Advisory	HGX	Chambers	2 hr
May 26, 10:21 PM CDT	Special Marine Warning	HGX		54 min
May 27, 1:45 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Burleson	60 min
May 27, 2:42 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Burleson, Grimes, Washington	48 min
May 27, 3:08 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Brazos, Grimes, Harris, Montgomery, Waller and 1 more	52 min
May 27, 3:21 PM CDT	Tornado Warning	HGX	Grimes, Harris, Montgomery, Waller, Washington	24 min
May 27, 3:52 PM CDT	Special Weather Statement	HGX	Liberty	38 min
May 27, 3:54 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Fort Bend, Harris, Montgomery, Waller	36 min
May 27, 4:06 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty, Montgomery	24 min
May 27, 4:28 PM CDT	Severe Thunderstorm Warning	HGX	Austin, Brazoria, Chambers, Fort Bend, Galveston, Harris and 4 more	62 min
May 27, 4:29 PM CDT	Special Marine Warning	HGX		61 min
May 27, 4:45 PM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Harris	2 hr
May 27, 4:50 PM CDT	Tornado Warning	HGX	Chambers, Galveston, Harris	13 min
May 27, 5:14 PM CDT	Special Marine Warning	HGX		31 min
May 27, 5:28 PM CDT	Areal Flood Advisory	HGX	Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty	115 min
May 27, 5:34 PM CDT	Severe Thunderstorm Warning	HGX	Fort Bend, Wharton	26 min
May 27, 5:43 PM CDT	Special Marine Warning	HGX		62 min
May 27, 6:09 PM CDT	Special Weather Statement	HGX	Burleson	51 min
May 27, 6:51 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Grimes, Montgomery, Walker	39 min
May 27, 6:55 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Burleson, Washington	20 min

Nearby

Severe Thunderstorm Warnings in Texas, 2020 Every severe thunderstorm warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.