Alert archive / Tennessee / Flash Flood Warnings in 2013

Flash Flood Warning 105, NWS Memphis, TN

September 2, 2013Gibson County, Tennessee

NWS Memphis, TN issued this flash flood warning at Sep 2, 2013, 2:35 PM CDT for Gibson County, Tennessee. 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: Sep 2, 2013, 2:35 PM CDT (19:35 UTC)
Expired: Sep 2, 2013, 5:30 PM CDT
In force: 3 hr
Issued by: NWS Memphis, TN
Area: Storm-based polygon
Flood severity: None

County Gibson County, TN

The radar

The Memphis radar (KNQA), 112 km from the middle of the area, began a volume at 19:37 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 (KBYH), launched 12:00Z, 7.6 hours before the alert went out and 159 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1097 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 1306 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: -9 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 Memphis, TN wrote its last area forecast discussion before this flash flood warning went out at Sep 2, 12:43 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Sep 2, 12:43 PM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Sep 2, 1:45 PM CDT, 50 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEMPHIS TN
145 PM CDT MON SEP 2 2013

ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115-
MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-032045-
ALCORN-BENTON MS-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA-
CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER-
FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY-
ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE AR-LEE MS-MADISON-
MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT-
PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY-
ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA-
UNION-WEAKLEY-YALOBUSHA-
145 PM CDT MON SEP 2 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS...
THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A FEW STRONG THUNDERSTORMS WILL BE POSSIBLE TODAY ACROSS MOST OF
THE MIDSOUTH...BUT MOST LIKELY MAINLY ALONG AND SOUTH OF
INTERSTATE 40. THE PRIMARY THREATS WILL BE STRONG WIND
GUSTS...FREQUENT LIGHTNING...AND LOCALLY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

FORMAL SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME...BUT
SPOTTERS AND LOCAL COUNTY OFFICIALS ARE ENCOURAGED TO REPORT STRONG
WINDS AND ANY ASSOCIATED LOCALIZED WIND DAMAGE TO THE NATIONAL
WEATHER SERVICE IN MEMPHIS.

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 2, 1:59 AM CDT	Areal Flood Advisory	MEG	Hardin, McNairy	61 min
Sep 2, 2:40 AM CDT	Areal Flood Advisory	MEG	Hardin	65 min
Sep 2, 2:38 PM CDT	Flash Flood Warning	MEG	Decatur	3 hr
Sep 2, 2:58 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Decatur, Hardin, Henderson	47 min
Sep 2, 3:44 PM CDT	Special Weather Statement	MEG	Hardin	31 min
Sep 2, 3:56 PM CDT	Severe Thunderstorm Warning	MEG	Chester, Hardin, Henderson, McNairy	64 min
Sep 2, 4:13 PM CDT	Flash Flood Warning	MEG	Chester, Hardin, Henderson	3 hr
Sep 2, 5:47 AM CDT	Flash Flood Warning	MEG	Tallahatchie	3 hr
Sep 2, 7:43 AM CDT	Flash Flood Warning	MEG	Tallahatchie	8 hr

Nearby

Flash Flood Warnings in Tennessee, 2013 Every flash flood warning in 2013

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.