Alert archive / Mississippi / Flash Flood Warnings in 2017
Flash Flood Warning 91, NWS Memphis, TN
NWS Memphis, TN issued this flash flood warning at Dec 22, 2017, 2:14 PM CST for 5 counties in Mississippi. It was in force for 6 hr. 4 reports 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
- Dec 22, 2017, 2:14 PM CST (20:14 UTC)
- Expired
- Dec 22, 2017, 8:15 PM CST
- In force
- 6 hr
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
- Flood severity
- None
Counties Benton County, MS, DeSoto County, MS, Marshall County, MS, Tate County, MS, Tunica County, MS
The radar
The Memphis radar (KNQA), 65 km from the middle of the area, began a volume at 20:13 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 |
|---|---|---|---|
| Dec 22, 2:30 PM CST | FLASH FLOOD | 2 N Hernando, MS | FLASH FLOODING WASHED OUT PART OF NESBIT ROAD NEAR TULANE ROAD. THE ROAD IS CLOSED. |
| Dec 22, 2:30 PM CST | FLASH FLOOD | Hernando, MS | HIGHWAY 51 IN HERNANDO CLOSED DUE TO FLOODING. |
| Dec 22, 2:30 PM CST | FLASH FLOOD | Walls, MS | NAIL ROAD NEAR WALLS CLOSED DUE TO DEEP FLOOD WATERS. |
| Dec 22, 5:30 PM CST | FLASH FLOOD | Olive Branch, MS | FLOODING RAINS HAVE CLOSED A PORTION OF HOLLY SPRINGS ROAD AND DAIRY BARN ROAD AT THE BRIDGES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 4 storm reports to this flash flood warning; the first came 16 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Little Rock, AR (KBYH), launched 12:00Z, 8.2 hours before the alert went out and 14 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
- 405 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 452 m above ground
- 0-6 km bulk shear
- 80 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
The text
As transmitted.
201
WGUS54 KMEG 222014
FFWMEG
MSC009-033-093-137-143-230215-
/O.NEW.KMEG.FF.W.0091.171222T2014Z-171223T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Memphis TN
214 PM CST FRI DEC 22 2017
The National Weather Service in Memphis has issued a
* Flash Flood Warning for...
DeSoto County in northwestern Mississippi...
Marshall County in northwestern Mississippi...
Northern Tunica County in northwestern Mississippi...
Northern Tate County in northwestern Mississippi...
Benton County in northeastern Mississippi...
* Until 815 PM CST Friday
* At 213 PM CST...Doppler Radar estimates 2 to 4 inches of rain has
occurred over the past 6 hours. Showers and thunderstorms will
produce an additional 2 to 3 inches of rain over the next 6 hours.
* Some locations that will experience flooding include...
Southaven, Olive Branch, Horn Lake, Hernando, Holly Springs, Lamar,
Coldwater, Byhalia, Walls, Tunica, Snow Lake Shores, Mt Pleasant,
Lake Cormorant, Eudora, North Tunica, Lewisburg, Arkabutla,
Michigan City, Red Banks and Canaan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 3470 9056 3463 9054 3468 9046 3473 9057
3480 9053 3473 9051 3474 9045 3488 9048
3483 9042 3484 9031 3491 9025 3495 9025
3499 9031 3499 8902 3486 8902 3481 8904
3481 8909 3472 8909 3461 9059
$$3 follow-up statements
319
WGUS74 KMEG 230025
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
625 PM CST FRI DEC 22 2017
MSC137-230034-
/O.CAN.KMEG.FF.W.0091.000000T0000Z-171223T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Tate MS-
625 PM CST FRI DEC 22 2017
...THE FLASH FLOOD WARNING FOR NORTHERN TATE COUNTY IS CANCELLED...
Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.
LAT...LON 3475 9054 3480 9053 3473 9052 3474 9045
3488 9048 3483 9042 3484 9031 3492 9024
3495 9025 3499 9030 3499 8902 3481 8904
3477 8990 3475 8993 3474 9008 3476 9014
3473 9019 3470 9051 3473 9057
$$
MSC009-033-093-143-230215-
/O.CON.KMEG.FF.W.0091.000000T0000Z-171223T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeSoto MS-Marshall MS-Tunica MS-Benton MS-
625 PM CST FRI DEC 22 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CST FOR
DESOTO...NORTHERN MARSHALL...NORTHERN TUNICA AND NORTHERN BENTON
COUNTIES...
At 624 PM CST,Doppler Radar estimates 1 to 3 inches of rain has
occurred over the last 4 hours. Showers and thunderstorms will
produce an additional half to one inch of rain over the next 2 hours.
Some locations that will experience flooding include...
Southaven, Olive Branch, Horn Lake, Hernando, Holly Springs, Lamar,
Byhalia, Walls, Snow Lake Shores, Mt Pleasant, Lake Cormorant,
Eudora, Lewisburg, Michigan City, Red Banks, Canaan, Lynchburg,
Robinsonville, Slayden and Phillipp.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3475 9054 3480 9053 3473 9052 3474 9045
3488 9048 3483 9042 3484 9031 3492 9024
3495 9025 3499 9030 3499 8902 3481 8904
3477 8990 3475 8993 3474 9008 3476 9014
3473 9019 3470 9051 3473 9057
$$850
WGUS74 KMEG 230049
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
649 PM CST FRI DEC 22 2017
MSC009-093-230058-
/O.CAN.KMEG.FF.W.0091.000000T0000Z-171223T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Marshall MS-Benton MS-
649 PM CST FRI DEC 22 2017
...THE FLASH FLOOD WARNING FOR NORTHERN MARSHALL AND NORTHERN BENTON
COUNTIES IS CANCELLED...
Flooding is no longer expected to pose a threat. Please continue to
heed any remaining road closures.
LAT...LON 3475 9054 3480 9053 3474 9052 3472 9049
3474 9045 3488 9048 3483 9042 3484 9031
3492 9024 3495 9025 3499 9030 3499 8972
3478 8972 3477 8990 3475 8993 3474 9008
3476 9017 3473 9019 3470 9051 3473 9057
$$
MSC033-143-230215-
/O.CON.KMEG.FF.W.0091.000000T0000Z-171223T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeSoto MS-Tunica MS-
649 PM CST FRI DEC 22 2017
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 815 PM CST FOR
DESOTO AND NORTHERN TUNICA COUNTIES...
At 648 PM CST,Doppler Radar estimates 1 to 3 inches of rain has
occurred over the past 4 hours. Showers and thunderstorms will
produce an additional half to one inch of rain over the next 2 hours.
Some locations that will experience flooding include...
Southaven, Olive Branch, Horn Lake, Hernando, Walls, Lake Cormorant,
Lynchburg, Eudora, Lewisburg, Robinsonville, North Tunica, Newport,
Clack, Trinity, Cockrum, Frees Corners, Commerce, Cedarview, Bright
and Nesbit.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
Please report flooding to your local law enforcement agency when you
can do so safely.
&&
LAT...LON 3475 9054 3480 9053 3474 9052 3472 9049
3474 9045 3488 9048 3483 9042 3484 9031
3492 9024 3495 9025 3499 9030 3499 8972
3478 8972 3477 8990 3475 8993 3474 9008
3476 9017 3473 9019 3470 9051 3473 9057
$$164
WGUS74 KMEG 230107
FFSMEG
Flash Flood Statement
National Weather Service Memphis TN
707 PM CST FRI DEC 22 2017
MSC033-143-230116-
/O.CAN.KMEG.FF.W.0091.000000T0000Z-171223T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DeSoto MS-Tunica MS-
707 PM CST FRI DEC 22 2017
...THE FLASH FLOOD WARNING FOR DESOTO AND NORTHERN TUNICA COUNTIES IS
CANCELLED...
The heavy rain has ended. Flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed any
remaining road closures. Additional rain is expected later tonight.
LAT...LON 3475 9054 3480 9053 3474 9052 3472 9049
3474 9045 3488 9048 3483 9042 3484 9031
3492 9024 3495 9025 3499 9030 3499 8972
3478 8972 3477 8990 3475 8993 3474 9008
3476 9017 3473 9019 3470 9051 3473 9057
$$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 Dec 22, 11:33 AM CST, 2 hours 41 minutes earlier.
Area forecast discussion, Dec 22, 11:33 AM CST, 2 hours 41 minutes before
Area Forecast Discussion
National Weather Service Memphis TN
1133 AM CST Fri Dec 22 2017
.UPDATE...Aviation Discussion.
&&
.PREV DISCUSSION... /issued 1018 AM CST Fri Dec 22 2017/
Skies are cloudy this morning with temperatures ranging from the
lower 50s to mid 60s. Surface cold front is just west of the
forecast area at this time. Rain is moving across much of west
Tennessee, northwest Mississippi and east Arkansas with rainfall
totals of over 2 inches over portions of Lee and Phillips counties
in Arkansas. Dense fog has ended over northeast Mississippi this
morning so have allowed Dense Fog Advisory to expire. Have updated
forecast to remove mention of the advisory and remove morning
wording.
ARS
PREV DISCUSSION... /issued 747 AM CST Fri Dec 22 2017/
Visibilities continue to crash across northeast Mississippi this
morning with most areas down to between one quarter to one half
mile in dense fog. Therefore, have issued a dense fog advisory for
these areas through 10 am cst. Updated headlines and forecast
products are out.
JLH
PREV DISCUSSION... /issued 544 AM CST Fri Dec 22 2017/
A cold front stretched across southern Missouri into northwest
Arkansas early this morning will drop southeast into the Mid South
this morning and stall out in the vicinity of the Interstate 40
corridor. This will set the stage for a heavy rainfall event
across the region as abundant deep layer moisture overruns the
stalled front and results in rain and scattered thunderstorms
moving over the same areas today and tonight. Lift will be
enhanced by an approaching surface low pressure system and mid
level shortwave that will push northeast through the region
tonight. Several inches of rain will be possible, especially along
and just south of the Interstate 40 corridor which includes the
Memphis and Jackson metro areas. In this corridor, a swatch of 3
to 5 inches of rain is anticipated. WPC supports this idea as well
and has continued the Moderate Risk for Excessive Rainfall in
these areas. A Flash Flood Watch will continue across a large
portion of the region to account for these anticipated heavy
rainfall totals.
The threat for strong to severe storms looks minimal at this time
as weak instability/poor lapse rates persist despite strong wind
shear. We will monitor this minimal threat through the day in case
higher instability can develop.
The rain should end from west to east on Saturday as the system
lifts northeast and the frontal boundary shifts south towards the
Gulf Coast. Temperatures ahead of the front today will be quite
warm with highs ranging from the upper 50s in northeast Arkansas
to the lower 70s in northeast Mississippi. Colder temperatures
will filter behind the front later tonight and Saturday.
A reinforcing cold front will move across the Mid South by
Christmas Eve with even colder temperatures anticipated. A few
snow flurries could occur on Sunday across areas north of
Interstate 40 as the cold air squeezes out any remaining moisture,
but most locations should remain precipitation free and have
maintained a dry forecast. Clear and cold weather should greet us
just in time for Christmas with low temperatures Christmas Eve
night in the lower to middle 20s and highs Christmas Day in the
upper 30s to lower 40s. Unfortunately for those dreaming for a
white Christmas this year, it appears that you will have to wait
and hope for next year. Although, the extended forecast period may
support some chances for winter type precipitation by the middle
of next week.
Below normal temperatures will continue through much of next week
as another storm system attempts to spread moisture back over the
colder airmass from next Wednesday through the end of next week.
There remains very large model spreads and resultant uncertainty
in the eventual forecast for this period. For now, it appears
possible that some winter weather could occur across portions of
the Mid South with colder temperatures persisting. This forecast
will be refined through the coming days as model guidance locks
into a solution and forecast confidence increases. Continue to
monitor the latest forecasts between Christmas and New Years
weekends as there could be possible impacts to travel if winter
weather occurs. Stay tuned.
JLH
&&
.AVIATION...18Z TAFs
LIFR or IFR conditions are expected to prevail during this TAF
cycle as a slow moving cold front continues to keep rain and
thunderstorms moving across the Midsouth. A series of surface
lows will track across the Memphis area resulting in variable
wind. Prevailing wind should be from the north...with prevailing
wind from the South at MKL and TUP. Wind speed should be less
than 10kt. Some improvement to cigs should be seen at MEM tomorrow
afternoon and the chance of rain should begin to diminish.
30
&&
.MEG WATCHES/WARNINGS/ADVISORIES...
AR...Flash Flood Watch through Saturday morning for Craighead-
Crittenden-Cross-Lee AR-Mississippi-Phillips-Poinsett-St.
Francis.
MO...Flash Flood Watch through Saturday morning for Dunklin-Pemiscot.
MS...Flash Flood Watch through Saturday morning for Alcorn-Benton MS-
Coahoma-DeSoto-Marshall-Panola-Quitman-Tate-Tippah-Tunica.
TN...Flash Flood Watch through Saturday morning for Benton TN-Carroll-
Chester-Crockett-Decatur-Dyer-Fayette-Gibson-Hardeman-
Hardin-Haywood-Henderson-Henry-Lake-Lauderdale-Madison-
McNairy-Obion-Shelby-Tipton-Weakley.
&&Hazardous weather outlook, Dec 22, 7:46 AM CST, 6 hours 28 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Memphis TN 746 AM CST Fri Dec 22 2017 ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115- MSZ001>017-020>024-TNZ001>004-019>022-048>055-088>092-231600- Alcorn-Benton MS-Benton TN-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- 746 AM CST Fri Dec 22 2017 This hazardous weather outlook is for portions of East Arkansas... the Missouri Bootheel...North Mississippi...and West Tennessee. .DAY ONE...Today and Tonight A Flash Flood Watch is in effect for a large portion of the Mid- South through tonight. Heavy rainfall is expected with an area of 3-5 inches of rainfall centered near the Interstate 40 corridor. A Dense Fog Advisory is in effect for portions of Northeast Mississippi through 10 AM CST as visibilities are expected to drop to one quarter mile or less at times. .DAYS TWO THROUGH SEVEN...Saturday through Thursday The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report any flooding to the National Weather Service in Memphis Tennessee.
In the hours before
Local storm report, Dec 22, 12:48 PM CST, 1 hour 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEMPHIS TN
1248 PM CST FRI DEC 22 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1246 PM FLASH FLOOD 1 N TUNICA 34.70N 90.38W
12/22/2017 TUNICA MS EMERGENCY MNGR
DULANEY AND JOSEPHINE ROADS ARE CLOSED DUE TO HIGH WATER.
SURROUNDING FIELDS ARE ALSO FLOODED.
&&
AJCThe office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 22, 7:32 AM CST | Dense Fog Advisory | MEG | Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc and 2 more | 2 hr |
| Dec 22, 3:00 PM CST | Flash Flood Warning | MEG | Alcorn, Tippah | 6 hr |
Nearby
Flash Flood Warnings in Mississippi, 2017Every flash flood warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.