Alert archive / Texas / Flood Watches in 2017

Flood Watch 2, NWS Lubbock, TX

September 25, 201710 counties in Texas

NWS Lubbock, TX issued this flood watch at Sep 25, 2017, 3:28 PM CDT for 10 counties in Texas. It took effect at Sep 26, 2017, 7:00 AM CDT. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued
Sep 25, 2017, 3:28 PM CDT (20:28 UTC)
In effect from
Sep 26, 2017, 7:00 AM CDT
Expired
Sep 27, 2017, 2:34 AM CDT
In force
20 hr
Issued by
NWS Lubbock, TX
Flood severity
None

Counties Cottle County, TX, Crosby County, TX, Dickens County, TX, Garza County, TX, Kent County, TX, King County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Stonewall County, TX

The radar

The Lubbock radar (KLBB), 82 km from the middle of the area, began a volume at 20:29 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.5 hours before the alert went out and 201 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, Amarillo Airport, TX at 12:00Z on 2017-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 890 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, Amarillo Airport, TX at 12:00Z on 2017-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 177 square meters per square second.1939587897Sfc1 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
890 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
664 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
177 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.4

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 25, 11:08 AM CDTAreal Flood AdvisoryLUBHale, Lubbock82 min
Sep 25, 11:42 AM CDTAreal Flood AdvisoryLUBCastro, Swisher93 min

Nearby

Flood Watches in Texas, 2017Every flood watch in 2017

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.