Alert archive / Texas / Flash Flood Warnings in 2019

Flash Flood Warning 12, NWS San Angelo, TX

May 18, 20194 counties in Texas

NWS San Angelo, TX issued this flash flood warning at May 18, 2019, 9:47 AM CDT for 4 counties in Texas. It was in force for 3 hr. 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 18, 2019, 9:47 AM CDT (14:47 UTC)
Expired: May 18, 2019, 12:45 PM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Flood severity: None

Counties Brown County, TX, Callahan County, TX, Coleman County, TX, Runnels County, TX

The radar

The Dyess AFB radar (KDYX), 71 km from the middle of the area, began a volume at 14:51 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 2.8 hours before the alert went out and 227 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: 2163 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 722 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 302 m²/s²
0-3 km storm-relative helicity: 311 m²/s²
Significant tornado parameter: 3.0
Supercell composite: 16.5

Open this sounding in Storm Lab

What forecasters said that day

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

NWS San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at May 18, 3:41 AM CDT, 6 hours 6 minutes earlier.

Area forecast discussion, May 18, 3:41 AM CDT, 6 hours 6 minutes before

Area Forecast Discussion
National Weather Service San Angelo TX
341 AM CDT Sat May 18 2019

.SHORT TERM...
(Today and Tonight)

Somewhat disorganized clusters of thunderstorms are affecting
areas north of Interstate 10 early this morning. These storms,
with some embedded severe weather in the form of hail up to golf
ball size, and wind gusts of 60+ mph will continue moving east
across the rest of the area through the morning hours either as
these clusters, or as a merging segmented line of storms. Expect
the activity to move east and out of the area during the
afternoon hours. Skies should clear from west to east behind the
thunderstorms as well, allowing for some heating, with highs
getting into the mid to upper 80s. Tonight, we should see a break
from overnight low clouds, and lows will be somewhat cooler,
dropping into the mid 50s to near 60.

.LONG TERM...
(Sunday through next Friday)

Sunday is still expected to be quiet with dry in place in the
lower levels, and zonal flow aloft. The one concern for Sunday
will be warmer temperatures. Highs could be as hot as mid 90s,
which would be warmer than the area has seen in some time.

The next upper level system quickly moves into the Intermountain
West Sunday night into Monday, putting west Texas back under
active southwest flow. The upper level low is expected to move
from the Great Basin area Sunday night, east into Colorado by
Tuesday morning, then pivot, and move north through the middle of
the week.

Low level moisture will quickly return to the area Sunday night,
and we could even see some isolated to scattered showers and
storms as early as Sunday night, mainly west of a
Throckmorton/Abilene/San Angelo line. Better chances move into the
area Monday and Monday night as active southwest flow moves over
the area and height falls increase instability. The GFS and ECMWF
are in fairly good agreement with the timing of the main upper
level trough axis moving through the area Monday night into
Tuesdaymorning, resulting the best chance for widespread
thunderstorm coverage coming Monday night. Much like today, expect
thunderstorms to move out of the area during the day Tuesday.

Wednesday through the end of the week, models keep us under
southwest flow between ridging to the east, and western troughing.
Will keep slight chance PoPs in at times, mainly for western
areas, and temperatures will average near or slightly warmer than
normal for this time of the year.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 84  56  86  69 /  60   0   0  10
San Angelo 	 86  56  90  68 /  50   0   0  10
Junction 	 86  59  90  69 /  60   0   5  10
Brownwood 	 83  56  87  67 /  70   0   0  10
Sweetwater 	 83  56  86  68 /  40   0   0  20
Ozona      	 84  55  87  68 /  40   0   0  10

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
None.
&&

20

Hazardous weather outlook, May 18, 4:07 AM CDT, 5 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service San Angelo TX
407 AM CDT Sat May 18 2019

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-190915-
Fisher-Nolan-Sterling-Coke-Runnels-Irion-Tom Green-Concho-
Crockett-Schleicher-Sutton-Haskell-Throckmorton-Jones-Shackelford-
Taylor-Callahan-Coleman-Brown-McCulloch-San Saba-Menard-Kimble-
Mason-
407 AM CDT Sat May 18 2019

This Hazardous Weather Outlook is for portions of west central
Texas.

.DAY ONE...Today and Tonight

Strong to severe thunderstorms will affect areas mainly north of
Interstate 10 through early afternoon today. Large hail, damaging
wind gusts, isolated tornadoes, and locally heavy rainfall
leading to flash flooding will all be possible with these storms.
In addition, deadly cloud to ground lightning will be possible
with all these storms.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Strong to severe thunderstorms will be possible Monday afternoon
into Monday night. The main hazards will be large hail, damaging
winds, and deadly cloud to ground lightning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Local storm report, May 18, 9:03 AM CDT, 44 minutes before

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Local storm report, May 18, 9:05 AM CDT, 42 minutes before

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Special weather statement, May 18, 9:19 AM CDT, 28 minutes before

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Local storm report, May 18, 9:35 AM CDT, 12 minutes before

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Local storm report, May 18, 9:40 AM CDT, 7 minutes before

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Local storm report, May 18, 9:43 AM CDT, 4 minutes before

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The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 7:05 PM CDT	Tornado Warning	SJT	Crockett	40 min
May 17, 7:42 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	48 min
May 17, 8:24 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	51 min
May 17, 9:11 PM CDT	Special Weather Statement	SJT	Crockett	49 min
May 17, 10:46 PM CDT	Special Weather Statement	SJT	Crockett	44 min
May 17, 11:08 PM CDT	Severe Thunderstorm Warning	SJT	Crockett, Irion, Schleicher	37 min
May 17, 11:40 PM CDT	Severe Thunderstorm Warning	SJT	Crockett, Schleicher	50 min
May 18, 12:29 AM CDT	Severe Thunderstorm Warning	SJT	Crockett, Schleicher	46 min
May 18, 12:46 AM CDT	Tornado Warning	SJT	Schleicher	29 min
May 18, 1:09 AM CDT	Severe Thunderstorm Warning	SJT	Schleicher	66 min
May 18, 1:31 AM CDT	Special Weather Statement	SJT	Sterling	44 min
May 18, 2:04 AM CDT	Special Weather Statement	SJT	Tom Green	41 min
May 18, 2:10 AM CDT	Areal Flood Advisory	SJT	Schleicher, Tom Green	50 min
May 18, 2:37 AM CDT	Special Weather Statement	SJT	Coke, Sterling	38 min
May 18, 3:23 AM CDT	Special Weather Statement	SJT	Coke, Nolan	52 min
May 18, 3:46 AM CDT	Areal Flood Advisory	SJT	Irion	59 min
May 18, 3:57 AM CDT	Severe Thunderstorm Warning	SJT	Irion	48 min
May 18, 4:04 AM CDT	Special Weather Statement	SJT	Fisher, Nolan	56 min
May 18, 4:49 AM CDT	Tornado Warning	SJT	Irion, Tom Green	26 min
May 18, 5:00 AM CDT	Special Weather Statement	SJT	Tom Green	60 min
May 18, 5:07 AM CDT	Special Weather Statement	SJT	Jones, Taylor	53 min
May 18, 5:08 AM CDT	Tornado Warning	SJT	Tom Green	22 min
May 18, 5:15 AM CDT	Severe Thunderstorm Warning	SJT	Coke, Runnels, Tom Green	45 min
May 18, 5:21 AM CDT	Tornado Warning	SJT	Tom Green	24 min
May 18, 5:39 AM CDT	Tornado Warning	SJT	Tom Green	51 min
May 18, 5:40 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	65 min
May 18, 5:45 AM CDT	Tornado Warning	SJT	Jones, Taylor	45 min
May 18, 5:48 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	57 min
May 18, 5:58 AM CDT	Severe Thunderstorm Warning	SJT	Coke, Runnels, Tom Green	62 min
May 18, 6:08 AM CDT	Areal Flood Advisory	SJT	Irion, Runnels, Tom Green	112 min
May 18, 6:15 AM CDT	Tornado Warning	SJT	Jones, Shackelford	30 min
May 18, 6:36 AM CDT	Severe Thunderstorm Warning	SJT	Coke	39 min
May 18, 6:38 AM CDT	Special Weather Statement	SJT	Jones	67 min
May 18, 6:42 AM CDT	Special Weather Statement	SJT	Shackelford	63 min
May 18, 6:42 AM CDT	Severe Thunderstorm Warning	SJT	Coke, Concho, Runnels, Tom Green	63 min
May 18, 6:44 AM CDT	Special Weather Statement	SJT	Haskell	31 min
May 18, 6:55 AM CDT	Special Weather Statement	SJT	Nolan, Sterling	50 min
May 18, 6:55 AM CDT	Tornado Warning	SJT	Concho, Runnels	35 min
May 18, 7:05 AM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	55 min
May 18, 7:06 AM CDT	Tornado Warning Tornado observed	SJT	Runnels	24 min
May 18, 7:10 AM CDT	Severe Thunderstorm Warning	SJT	Irion, Sterling, Tom Green	65 min
May 18, 7:19 AM CDT	Tornado Warning Tornado observedConsiderable damage threat	SJT	Runnels	41 min
May 18, 7:24 AM CDT	Special Weather Statement	SJT	Coke	51 min
May 18, 7:38 AM CDT	Severe Thunderstorm Warning	SJT	Coleman, Runnels	67 min
May 18, 7:45 AM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Runnels, Taylor	45 min
May 18, 7:49 AM CDT	Tornado Warning	SJT	Coleman, Runnels	25 min
May 18, 7:57 AM CDT	Special Weather Statement	SJT	Shackelford, Throckmorton	48 min
May 18, 8:09 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Runnels, Taylor	51 min
May 18, 8:13 AM CDT	Special Weather Statement	SJT	Tom Green	62 min
May 18, 8:25 AM CDT	Special Weather Statement	SJT	Shackelford, Throckmorton	65 min
May 18, 8:25 AM CDT	Tornado Warning	SJT	Coleman	35 min
May 18, 8:33 AM CDT	Flash Flood Warning	SJT	Tom Green	117 min
May 18, 8:34 AM CDT	Tornado Warning Tornado observedConsiderable damage threat	SJT	Coleman	26 min
May 18, 8:40 AM CDT	Flash Flood Warning	SJT	Runnels	3 hr
May 18, 8:52 AM CDT	Tornado Warning Tornado observed	SJT	Callahan	23 min
May 18, 8:55 AM CDT	Special Weather Statement	SJT	Runnels	50 min
May 18, 9:03 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman	57 min
May 18, 9:19 AM CDT	Special Weather Statement	SJT	Concho	26 min
May 18, 9:24 AM CDT	Severe Thunderstorm Warning	SJT	Brown	66 min
May 18, 9:55 AM CDT	Special Weather Statement	SJT	Concho	35 min
May 18, 9:57 AM CDT	Severe Thunderstorm Warning	SJT	Coleman	48 min
May 18, 10:36 AM CDT	Severe Thunderstorm Warning	SJT	Coleman, Concho, McCulloch	39 min
May 18, 11:10 AM CDT	Special Weather Statement	SJT	Menard	50 min
May 18, 11:18 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	42 min
May 18, 11:36 AM CDT	Severe Thunderstorm Warning	SJT	McCulloch	39 min
May 18, 11:44 AM CDT	Areal Flood Advisory	SJT	Brown, Coleman	3 hr
May 18, 12:14 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, San Saba	46 min
May 18, 12:33 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	42 min
May 18, 1:07 PM CDT	Special Weather Statement	SJT	San Saba	38 min

Nearby

Flash Flood Warnings in Texas, 2019 Every flash flood warning in 2019

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.