Alert archive / Texas / Flash Flood Warnings in 2025

Flash Flood Warning 11, NWS Houston/Galveston, TX

June 13, 2025Montgomery County, Texas

NWS Houston/Galveston, TX issued this flash flood warning at Jun 13, 2025, 6:28 PM CDT for Montgomery County, Texas. It was in force for 92 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
Jun 13, 2025, 6:28 PM CDT (23:28 UTC)
Expired
Jun 13, 2025, 8:00 PM CDT
In force
92 min
Issued by
NWS Houston/Galveston, TX
Area
Storm-based polygon
Flood severity
None

County Montgomery County, TX

The radar

The Houston radar (KHGX), 101 km from the middle of the area, began a volume at 23:32 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

Shreveport, LA (KSHV), launched 12:00Z, 11.5 hours before the alert went out and 294 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, Shreveport, LA at 12:00Z on 2025-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 277 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, Shreveport, LA at 12:00Z on 2025-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
277 J/kg
Mixed-layer CIN
-72 J/kg
Mixed-layer LCL
986 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 9:27 PM CDTAreal Flood WarningHGXJackson, Matagorda10 hr
Jun 13, 9:33 AM CDTRiver Flood WarningHGXBrazos, Grimes, Madison5 days
Jun 13, 9:41 AM CDTRiver Flood WarningHGXBrazoria59 hr
Jun 13, 10:11 AM CDTRip Current StatementHGXBrazoria, Galveston, Matagorda18 hr
Jun 13, 1:42 PM CDTSpecial Weather StatementHGXLiberty, Polk63 min
Jun 13, 2:49 PM CDTSpecial Weather StatementHGXLiberty, Polk, San Jacinto, Trinity56 min
Jun 13, 3:08 PM CDTSpecial Weather StatementHGXMontgomery52 min
Jun 13, 3:24 PM CDTSpecial Weather StatementHGXHouston, Trinity51 min
Jun 13, 3:45 PM CDTSpecial Weather StatementHGXTrinity30 min
Jun 13, 3:56 PM CDTAreal Flood AdvisoryHGXPolk, San Jacinto, Trinity, Walker4 hr
Jun 13, 4:11 PM CDTSpecial Weather StatementHGXWashington49 min
Jun 13, 4:24 PM CDTSpecial Weather StatementHGXSan Jacinto, Walker51 min
Jun 13, 5:21 PM CDTSpecial Weather StatementHGXGrimes, Montgomery, Walker54 min
Jun 13, 5:44 PM CDTAreal Flood AdvisoryHGXMontgomery, Walker3 hr
Jun 13, 5:59 PM CDTSevere Thunderstorm WarningHGXMontgomery31 min
Jun 13, 6:32 PM CDTSpecial Weather StatementHGXMontgomery43 min
Jun 13, 6:33 PM CDTAreal Flood AdvisoryHGXGrimes, Harris, Montgomery, Waller117 min

Nearby

Flash Flood Warnings in Texas, 2025Every flash flood warning in 2025

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.