Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 42, NWS San Angelo, TX

July 8, 2015Brown County, Coleman County, Texas

NWS San Angelo, TX issued this flash flood warning at Jul 8, 2015, 12:18 PM CDT for Brown County, Coleman County, 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
Jul 8, 2015, 12:18 PM CDT (17:18 UTC)
Expired
Jul 8, 2015, 3:30 PM CDT
In force
3 hr
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Flood severity
None

Counties Brown County, TX, Coleman County, TX

The radar

The Dyess AFB radar (KDYX), 85 km from the middle of the area, began a volume at 17:19 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, 5.3 hours before the alert went out and 217 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 2015-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 257 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 2015-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -89 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
257 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
828 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-89 m²/s²
0-3 km storm-relative helicity
-40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 8, 7:00 AM CDT, 5 hours 18 minutes earlier.

Area forecast discussion, Jul 8, 7:00 AM CDT, 5 hours 18 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
700 AM CDT WED JUL 8 2015

.AVIATION...
/12Z TAFS/

Mainly MVFR ceilings expected across the terminals through early
afternoon, before ceilings lift to VFR. The exception will be KABI
where IFR ceilings will persist through the late morning hours.
Keeping a TEMPO group at KJCT and KBBD for SHRA this morning,
otherwise some additonal rain showers may redevelop and affect
primarily the southern terminals after 20Z, ending by early
evening. Stratus is expected to develop overnight, with MVFR
ceilings affecting the southern terminals after 09Z.

&&

.PREV DISCUSSION... /ISSUED 454 AM CDT Wed Jul 8 2015/

SHORT TERM...
(Today and Tonight)

..Heavy rainfall and localized flash flooding remain possible
again today...

More beneficial rains will continue across portions of West Central
Texas through this afternoon/early evening. Early this morning,
widespread showers and thunderstorms continue to develop across much
of the Heartland and Northwest Hill Country, with this activity
becoming more scattered across the Concho Valley. Where it does
rain, very heavy rainfall with rapid accumulation rates remain
likely, as precipitable water values range from 1.7 inches across
western locations (Sterling County to Crockett County), to 2.1
inches across the eastern part of the forecast area. Most of the
numerical guidance also shows additional convection developing this
afternoon, mainly east of a line from Throckmorton to San Angelo.
They also show good precipitation amounts through early afternoon,
before things start to wind down. We considered extended the Flash
Flood Watch in time through 7 PM. However, with uncertainty
regarding how late into the afternoon the heavier precipitation
lasts, we decided to hold off on this and let the next shift monitor
the trends in the numerical guidance. The Flood Watch was also
expanded east to include McCulloch and San Saba Counties.

Any remaining convection will diminish by sunset, with drier air
moving into the region overnight. Lows will drop into the lower 70s
at most locations.

LONG TERM...
(Wednesday through next Monday)

Warmer and drier air will return to area for the middle to end of
the week. A ridge of high pressure currently located across the
southeastern states will build westward through the remainder of
this week, strengthening as it does so, with the center of the ridge
taking up residence over eastern New Mexico by early next week. This
will result in a continued influx of dry air with increasing
upper-level heights. Highs in the mid to upper 90s are likely for this
period.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 86  72  91  71  91 /  50  10   5   0   0
San Angelo 	 89  72  91  70  92 /  40   5   5   0   0
Junction 	 89  72  91  71  90 /  30   5   5   0   0

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH until 1 PM CDT this afternoon FOR THE
FOLLOWING ZONES: Brown...Callahan...Coleman...Concho...
McCulloch...Runnels...San Saba...Shackelford...Taylor...
Throckmorton...Tom Green.

&&

99/99/24
Hazardous weather outlook, Jul 8, 4:02 AM CDT, 8 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
402 AM CDT WED JUL 8 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-090915-
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-
402 AM CDT WED JUL 8 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS WILL LOCALLY HEAVY RAINFALL WILL CONTINUE ACROSS
MUCH OF WEST CENTRAL TEXAS THIS AFTERNOON AND TONIGHT...ESPECIALLY
EAST OF A LINE FROM THROCKMORTON...TO SAN ANGELO. DANGEROUS
LIGHTNING AND LOCALLY HEAVY RAINFALL IS EXPECTED WITH THESE
SHOWERS AND THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Local storm report, Jul 8, 11:00 AM CDT, 1 hour 18 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 7:14 PM CDTAreal Flood AdvisorySJTCrockett2 hr
Jul 7, 11:49 PM CDTAreal Flood AdvisorySJTBrown, McCulloch116 min
Jul 8, 1:02 AM CDTFlash Flood WarningSJTBrown, Coleman, McCulloch, San Saba3 hr
Jul 8, 1:59 AM CDTAreal Flood AdvisorySJTMenard2 hr
Jul 8, 3:41 AM CDTAreal Flood AdvisorySJTConcho, Menard, Schleicher109 min
Jul 8, 4:17 AM CDTFlash Flood WarningSJTBrown, Coleman, McCulloch, San Saba3 hr
Jul 8, 7:06 AM CDTFlash Flood WarningSJTBrown, Coleman, McCulloch, San Saba114 min
Jul 8, 7:30 AM CDTAreal Flood AdvisorySJTCallahan, Coleman90 min
Jul 8, 8:45 AM CDTFlash Flood WarningSJTBrown, Coleman4 hr
Jul 8, 8:52 AM CDTFlash Flood WarningSJTMcCulloch, San Saba4 hr
Jul 8, 9:17 AM CDTRiver Flood WarningSJTBrown, San Saba24 hr
Jul 8, 9:17 AM CDTRiver Flood WarningSJTLampasas, San Saba49 hr
Jul 8, 12:20 PM CDTRiver Flood WarningSJTBrown72 hr
Jul 8, 3:26 PM CDTFlash Flood WarningSJTBrown, Coleman3 hr
Jul 8, 4:32 PM CDTAreal Flood AdvisorySJTIrion, Tom Green118 min
Jul 8, 4:45 PM CDTSpecial Weather StatementSJTTom Green30 min
Jul 8, 5:17 PM CDTSpecial Weather StatementSJTTom Green43 min
Jul 8, 6:49 PM CDTAreal Flood WarningSJTBrown12 hr

Nearby

Flash Flood Warnings in Texas, 2015Every flash flood warning in 2015

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.