Alert archive / Texas / Flash Flood Warnings in 2016
Flash Flood Warning 49, NWS Houston/Galveston, TX
NWS Houston/Galveston, TX issued this flash flood warning at Jun 1, 2016, 6:40 PM CDT for Harris County, Montgomery County, Texas. It was in force for 110 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 1, 2016, 6:40 PM CDT (23:40 UTC)
- Expired
- Jun 1, 2016, 8:30 PM CDT
- In force
- 110 min
- Issued by
- NWS Houston/Galveston, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Harris County, TX, Montgomery County, TX
The radar
The Houston radar (KHGX), 70 km from the middle of the area, began a volume at 23:42 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 1, 7:55 PM CDT | FLASH FLOOD | 3 Wnw Spring, TX | WATER 4 INCHES DEEP ON THE I-45 FEEDER ROADS AT THE FM-2920 INTERSECTION. HIGH WATER MADE FM-2920 IMPASSABLE IN SPOTS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lake Charles Mun, LA (KLCH), launched 12:00Z, 11.7 hours before the alert went out and 209 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.
- Mixed-layer CAPE
- 1637 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 701 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
545
WGUS54 KHGX 012340
FFWHGX
TXC201-339-020130-
/O.NEW.KHGX.FF.W.0049.160601T2340Z-160602T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
640 PM CDT WED JUN 1 2016
THE NATIONAL WEATHER SERVICE IN LEAGUE CITY HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN MONTGOMERY COUNTY IN SOUTHEASTERN TEXAS...
NORTHERN HARRIS COUNTY IN SOUTHEASTERN TEXAS...
* UNTIL 830 PM CDT
* AT 636 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. 4 TO 5 INCHES OF RAIN HAVE
FALLEN. FLASH FLOODING IS OCCURRING OR EXPECTED TO BEGIN SHORTLY.
PLEASE AVOID AREAS WITH HIGH WATER.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CONROE...HUMBLE...TOMBALL...PINEHURST...SPRING...KINGWOOD...THE
WOODLANDS...GREATER GREENSPOINT...ALDINE...OAK RIDGE NORTH...PANORAMA
VILLAGE...SHENANDOAH...WOODBRANCH...CUT AND SHOOT...STAGECOACH...
WOODLOCH...WILLOWBROOK...BUSH INTERCONTINENTAL AIRPORT...PORTER
HEIGHTS AND SPLASHTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 2989 9545 3008 9581 3041 9548 3010 9509
2995 9504 3001 9525
$$1 follow-up statement
374
WGUS74 KHGX 020104
FFSHGX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
804 PM CDT WED JUN 1 2016
TXC201-339-020130-
/O.CON.KHGX.FF.W.0049.000000T0000Z-160602T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTGOMERY TX-HARRIS TX-
804 PM CDT WED JUN 1 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR
SOUTHERN MONTGOMERY AND NORTHERN HARRIS COUNTIES...
AT 801 PM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. 5 TO 6 INCHES OF RAIN HAVE
FALLEN. FLASH FLOODING IS ONGOING. THUNDERSTORMS OVER CENTRAL HARRIS
COUNTY ARE MOVING NORTH AND WILL COLLIDE WITH THIS NEARLY STATIONARY
AREA OF STORMS ALONG SPRING CREEK. RAINFALL RATES MAY BRIEFLY
INCREASE AS THESE CELL MERGERS OCCUR. SPRING CREEK AND WILLOW CREEK
ARE BOTH RISING RAPIDLY.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
CONROE...HUMBLE...TOMBALL...PINEHURST...SPRING...KINGWOOD...THE WOODLANDS...
GREATER GREENSPOINT...ALDINE...OAK RIDGE NORTH...PANORAMA VILLAGE...
SHENANDOAH...WOODBRANCH...CUT AND SHOOT...STAGECOACH...WOODLOCH...
WILLOWBROOK...BUSH INTERCONTINENTAL AIRPORT...PORTER HEIGHTS AND
SPLASHTOWN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 2989 9545 3008 9581 3041 9548 3010 9509
2995 9504 3001 9525
$$The office that day
Everything else NWS Houston/Galveston, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 9:01 PM CDT | River Flood Warning | HGX | Brazoria, Fort Bend, Wharton | 34 hr |
| May 31, 10:03 PM CDT | Special Marine Warning | HGX | 57 min | |
| May 31, 10:12 PM CDT | Special Marine Warning | HGX | 93 min | |
| May 31, 10:59 PM CDT | Special Marine Warning | HGX | 61 min | |
| Jun 1, 10:13 AM CDT | Flash Flood Watch | HGX | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more | 3 days |
| Jun 1, 10:26 AM CDT | Areal Flood Advisory | HGX | Polk, San Jacinto, Trinity | 2 hr |
| Jun 1, 10:46 AM CDT | Areal Flood Advisory | HGX | Houston, Polk, Trinity | 119 min |
| Jun 1, 4:37 PM CDT | Areal Flood Advisory | HGX | Harris, Montgomery, Waller | 53 min |
| Jun 1, 5:11 PM CDT | Flash Flood Warning | HGX | Harris, Montgomery | 94 min |
| Jun 1, 5:40 PM CDT | Areal Flood Advisory | HGX | Austin, Colorado, Fort Bend, Waller, Wharton | 65 min |
| Jun 1, 5:55 PM CDT | Areal Flood Advisory | HGX | Harris, Montgomery, San Jacinto | 65 min |
Nearby
Flash Flood Warnings in Texas, 2016Every flash flood warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.