Alert archive / Arkansas / Flash Flood Warnings in 2011
Flash Flood Warning 92, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Apr 28, 2011, 7:14 AM CDT for Lawrence County, Randolph County, Arkansas. 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 outline as issued.
The facts
- Issued
- Apr 28, 2011, 7:14 AM CDT (12:14 UTC)
- Expired
- Apr 28, 2011, 10:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- Major
Counties Lawrence County, AR, Randolph County, AR
The radar
The Memphis radar (KNQA), 137 km from the middle of the area, began a volume at 12:12 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
Little Rock, AR (KLZK), launched 12:00Z, 0.2 hours before the alert went out and 178 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1362 m above ground
- 0-6 km bulk shear
- 87 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- -6 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
069 WGUS54 KMEG 281214 FFWMEG ARC075-121-281815- /O.NEW.KMEG.FF.W.0092.110428T1214Z-110428T1815Z/ /00000.3.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MEMPHIS TN 714 AM CDT THU APR 28 2011 THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A * FLASH FLOOD WARNING FOR A LEVEE FAILURE IN... LAWRENCE COUNTY IN EASTERN ARKANSAS... RANDOLPH COUNTY IN EASTERN ARKANSAS... THIS INCLUDES THE CITY OF POCAHONTAS... * UNTIL 115 PM CDT THURSDAY * AT 714 AM CDT...A LEVEE ON THE BLACK RIVER AT POCAHONTAS FAILED CAUSING FLASH FLOODING OF IMMEDIATELY SURROUNDING AREAS...MAINLY ON THE EAST BANK OF THE RIVER. * LOCATIONS IMPACTED INCLUDE COLLEGE CITY...O'KEAN...POCAHONTAS AND PORTIA PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. && LAT...LON 3628 9103 3627 9082 3611 9081 3607 9110 $$
1 follow-up statement
930 WGUS74 KMEG 281530 FFSMEG FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 1030 AM CDT THU APR 28 2011 ARC075-121-281534- /O.CAN.KMEG.FF.W.0092.000000T0000Z-110428T1815Z/ /00000.3.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/ RANDOLPH-LAWRENCE- 1030 AM CDT THU APR 28 2011 ...THE FLASH FLOOD WARNING FOR A BREACHED LEVEE ON THE BLACK RIVER AT POCAHONTAS HAS BEEN CANCELLED FOR EAST CENTRAL LAWRENCE AND SOUTH CENTRAL RANDOLPH COUNTIES... THE FLOODING HAS RECEDED AND NO LONGER POSES A SIGNIFICANT THREAT. LAT...LON 3628 9103 3627 9082 3611 9081 3607 9110 $$
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 9:12 PM CDT | Flash Flood Warning | MEG | Lawrence, Randolph | 10 hr |
Nearby
Flash Flood Warnings in Arkansas, 2011Every flash flood warning in 2011
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.