Alert archive / Mississippi / Flash Flood Warnings in 2024

Flash Flood Warning 42, NWS Jackson, MS

May 9, 2024Hinds County, Warren County, Mississippi

NWS Jackson, MS issued this flash flood warning at May 9, 2024, 10:01 PM CDT for Hinds County, Warren County, Mississippi. 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: May 9, 2024, 10:01 PM CDT (03:01 UTC)
Expired: May 10, 2024, 1:00 AM CDT
In force: 3 hr
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Flood severity: None

Counties Hinds County, MS, Warren County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 62 km from the middle of the area, began a volume at 03:04 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

Jackson, MS (KJAN), launched 00:00Z, 3.0 hours before the alert went out and 53 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: 4062 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1056 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.2

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 Jackson, MS wrote its last area forecast discussion before this flash flood warning went out at May 9, 8:31 PM CDT, 1 hour 30 minutes earlier.

Area forecast discussion, May 9, 8:31 PM CDT, 1 hour 30 minutes before

Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
831 PM CDT Thu May 9 2024

...New MESOSCALE UPDATE, AVIATION...

.MESOSCALE UPDATE...
Issued at 813 PM CDT Thu May 9 2024

Anticipated severe weather event continues to unfold across our
region this evening. Analyzed MLCAPE values near or exceeding 4000
J/kg are supported by this evening's KJAN sounding. A robust and
unstable layer over very warm, humid boundary layer air mass has
set up the ingredients for fast-growing and powerful thunderstorms
as the cap is broken. Primary driver for new storm development at
this time is increasing moisture convergence along outflow
boundaries and the frontal boundary in our forecast area, as well
as from the anticipated congealing outflow boundary from activity
to our west (East Texas/western Louisiana). With the axis of
greatest instability (4500 J/kg MLCAPE) extending west to east
generally between the I-10 and I-20 corridors, and with deep-
layer wind shear from the west at 60kts, any storm cluster or
linear elements should find a favorable environment to continue
spreading eastward. The threat for wind gusts over 80 mph and hail
up to golf ball size remain the primary concerns tonight with any
of the severe thunderstorms. /NF/

&&

.DISCUSSION...
Issued at 317 PM CDT Thu May 9 2024

Through Friday: ...Severe Weather Expected Tonight...

Mid afternoon surface analysis had a cold front nearly along a
Tupelo to Greenville Mississippi line. South of the cold front
temperatures have reach 90F with dew points in the mid to upper 70s.
These conditions were resulting in heat index values in the lower
100s and many sites will peak near 105F. These conditions were also
resulting in surface based CAPE values in excess of 5000l/kg. Local
radars were still quiet in our CWA thanks in part to the capping
noted on the 12Z Thu JAN sounding but regional satellite imagery and
radars showed deep convection developing over the Red River valley
with a disturbance noted over central Texas that is expected to
help develop the convection into an mcs that will sweep east
across our region this evening and several hours after midnight.

There is a low chance that an isolated storm or two may develop and
become strong to severe this afternoon ahead of the main event but
overall, very little has changed from the previous thinking. An
Enhanced Risk(3 out of 5) of severe storms remains outlooked for our
CWA along and south of Highway 82. Damaging wind gusts of 80mph will
be the main threat but hail up to the size of golf balls will also
be possible. In addition tornadoes cannot be ruled out and locally
heavy rainfall of one to two inches in a short amount of time will
be possible. Model consensus suggests that the mcs will be moving
into our western most zones during the early evening and exiting our
eastern most zones by 3AM. Although the severe threat will end by
3AM, the cold front will be moving through our CWA and some
anafrontal rainfall will prolong rain chances into Friday morning.
As the cold front continues shifting southeast of our CWA, much
drier and cooler air moving into the region in its wake will bring
an end to the rain before noon. Afternoon highs will be cooler and
held into the 70s across our north with low to mid 80s across our
south. /22/

Friday night through late next week: Our area will continue to be
influenced by an active perturbed pattern, which will keep rain
and storm chances in the forecast. We start off quiet this weekend
in the wake of the Thursday night system as flow turns
northwesterly. Conditions will turn quite pleasant this weekend as
dewpoints only remain in the 50s. This won't last long however as
our next disturbance quickly advances. Unlike the previous
disturbance, the positive tilt and dry airmass will likely not
give enough time to recover a moist airmass, thus a more
suppressed system. That said, the parameters may be supportive of
isolated strong to severe storms, especially given moderate to
strong deep shear, so a severe graphic may eventually be needed
down the road if trends persist. There could also be some heavy
rain associated with this system, especially given PWAT anomaly as
moisture attempts to recover. However, northern extent is
uncertain at this time. Several weak disturbances will follow for
mid next week with persistent rain and storm chances.
Thursday/Friday disturbance appears to potentially be more potent
with a richer airmass and stronger shear. However, the positive
tilt may tend to suppress this system as well, giving a more
southern solution. Expect adjustments to the forecast as more
details become available./SAS/

&&

.AVIATION...
(00Z TAFS)
Issued at 813 PM CDT Thu May 9 2024

Ongoing SHRA and TSRA across parts of the forecast area will
continue to pose the risk for severe wind gusts at the TAF sites,
with gusts over 65 kts possible with the strongest of storms
before 09Z. Patches of low stratus and variable visibility near
storms will also lead to the possibility of MVFR or lower
conditions. Winds should generally prevail out of the north with
improving conditions for sites after 12Z Friday. /NF/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       67  80  57  79 /  80  10   0   0
Meridian      67  84  55  81 /  90  30   0   0
Vicksburg     67  82  59  81 /  80  10   0   0
Hattiesburg   70  87  60  83 /  70  40   0   0
Natchez       67  83  60  81 /  80  10   0   0
Greenville    65  80  59  81 /  50   0   0   0
Greenwood     64  79  57  80 /  60   0   0   0

&&

.JAN WATCHES/WARNINGS/ADVISORIES...
MS...None.
LA...None.
AR...None.
&&

22/SAS20/NF

In the hours before

Local storm report, May 9, 8:50 PM CDT, 1 hour 11 minutes before

Preliminary Local Storm Report
National Weather Service Jackson MS
850 PM CDT Thu May 9 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0815 PM     Hail             5 SW Vaiden             33.28N 89.81W
05/09/2024  M1.00 Inch       Carroll            MS   Public

            Report of quarter-sized hail.

&&

KP

Special weather statement, May 9, 9:00 PM CDT, 1 hour 1 minute before

Special Weather Statement
National Weather Service Jackson MS
900 PM CDT Thu May 9 2024

LAZ025-MSZ047-100230-
Tensas LA-Warren MS-
900 PM CDT Thu May 9 2024

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN TENSAS PARISH IN
NORTHEASTERN LOUISIANA AND SOUTHWESTERN WARREN COUNTIES THROUGH 930
PM CDT...

At 900 PM CDT, Doppler radar was tracking a strong thunderstorm near
Newellton, or 13 miles northwest of St. Joseph, moving northeast at
40 mph.

HAZARD...Wind gusts up to 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Newellton and Somerset around 905 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
northeastern Louisiana...and southwestern and west central
Mississippi.

&&

LAT...LON 3223 9112 3221 9112 3221 9111 3209 9105
      3208 9108 3205 9108 3205 9111 3208 9114
      3208 9115 3206 9116 3205 9115 3203 9109
      3203 9111 3195 9135 3215 9149
TIME...MOT...LOC 0200Z 238DEG 34KT 3210 9133

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

AJ

Special weather statement, May 9, 9:36 PM CDT, 25 minutes before

Special Weather Statement
National Weather Service Jackson MS
936 PM CDT Thu May 9 2024

ARZ074-075-LAZ007-008-100330-
Chicot AR-Ashley AR-Morehouse LA-West Carroll LA-
936 PM CDT Thu May 9 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHERN CHICOT AND EASTERN
ASHLEY COUNTIES...NORTHEASTERN MOREHOUSE AND NORTHEASTERN WEST
CARROLL PARISHES THROUGH 1030 PM CDT...

At 936 PM CDT, Doppler radar was tracking a strong thunderstorm near
Jones, or 10 miles northwest of Oak Grove, moving northeast at 40
mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This strong thunderstorm will be near...
  Wilmot around 940 PM CDT.
  Kilbourne around 945 PM CDT.
  Eudora around 955 PM CDT.
  Chicot Junction around 1000 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 300 AM CDT for
northeastern Louisiana.

&&

LAT...LON 3339 9149 3339 9146 3342 9146 3327 9113
      3314 9119 3313 9120 3310 9120 3301 9126
      3283 9151 3301 9173
TIME...MOT...LOC 0236Z 233DEG 37KT 3295 9154

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

EC

Local storm report, May 9, 9:51 PM CDT, 10 minutes before

Preliminary Local Storm Report
National Weather Service Jackson MS
951 PM CDT Thu May 9 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     Tstm Wnd Dmg     4 ENE Monticello        32.61N 91.33W
05/09/2024                   East Carroll       LA   Law Enforcement

            Report of a tree downed across HWY-877 just
            north of HWY-580.

&&

KP

Local storm report, May 9, 9:59 PM CDT, 2 minutes before

Preliminary Local Storm Report
National Weather Service Jackson MS
959 PM CDT Thu May 9 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 PM     Tstm Wnd Dmg     2 SSW Rayville          32.45N 91.77W
05/09/2024                   Richland           LA   Law Enforcement

            Report of trees downed on HWY-135 and HWY-15
            just south of Rayville.

&&

KP

Local storm report, May 9, 10:00 PM CDT, 1 minute before

Preliminary Local Storm Report
National Weather Service Jackson MS
1000 PM CDT Thu May 9 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0840 PM     Hail             2 SW Rayville           32.45N 91.78W
05/09/2024  M0.70 Inch       Richland           LA   Law Enforcement

            Report of dime-sized hail.

&&

KP

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 7:04 PM CDT	Special Weather Statement	JAN	Kemper	56 min
May 9, 7:30 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake, Madison	43 min
May 9, 7:37 PM CDT	Special Weather Statement	JAN	Noxubee	23 min
May 9, 7:55 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Holmes	37 min
May 9, 9:21 PM CDT	Severe Thunderstorm Warning Considerable damage threat	JAN	Claiborne, Issaquena, Sharkey, Warren, Yazoo	69 min
May 9, 9:36 PM CDT	Severe Thunderstorm Warning	JAN	Hinds, Madison, Rankin, Sharkey, Warren, Yazoo	69 min
May 9, 10:16 PM CDT	Tornado Warning	JAN	Hinds, Madison, Rankin	23 min
May 9, 10:26 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Copiah, Franklin, Jefferson, Lincoln, Simpson	79 min
May 9, 10:29 PM CDT	Flash Flood Warning	JAN	Hinds, Madison, Rankin	3 hr
May 9, 10:40 PM CDT	Severe Thunderstorm Warning Destructive damage threat	JAN	Jasper, Leake, Madison, Neshoba, Newton, Rankin and 2 more	65 min
May 9, 11:01 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Simpson, Smith	59 min
May 9, 11:25 PM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lawrence, Lincoln, Simpson	50 min
May 9, 11:39 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Copiah, Franklin, Jefferson, Lawrence, Lincoln	81 min
May 9, 11:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	JAN	Clarke, Jasper, Jones, Lauderdale, Newton, Smith	64 min
May 9, 11:41 PM CDT	Severe Thunderstorm Warning	JAN	Adams	49 min
May 9, 11:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	JAN	Covington, Jones, Smith	21 min
May 10, 12:11 AM CDT	Tornado Warning	JAN	Clarke, Lauderdale	25 min
May 10, 12:14 AM CDT	Severe Thunderstorm Warning	JAN	Covington, Jefferson Davis, Lawrence, Lincoln	54 min
May 10, 12:15 AM CDT	Tornado Warning	JAN	Clarke	21 min
May 10, 12:20 AM CDT	Severe Thunderstorm Warning Considerable damage threat	JAN	Covington, Jones	40 min
May 10, 12:46 AM CDT	Severe Thunderstorm Warning	JAN	Lamar, Marion	59 min
May 10, 1:25 AM CDT	Special Weather Statement	JAN	Forrest	50 min
May 10, 1:35 AM CDT	Severe Thunderstorm Warning	JAN	Forrest, Lamar	40 min
May 10, 2:10 AM CDT	Special Weather Statement	JAN	Stone	20 min
May 10, 11:55 AM CDT	River Flood Warning	JAN	Adams, Wilkinson	15 days
May 9, 7:37 PM CDT	Special Weather Statement	JAN	Richland	53 min
May 9, 7:45 PM CDT	Severe Thunderstorm Warning	JAN	Franklin, Morehouse, Richland, West Carroll	60 min
May 9, 8:42 PM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Franklin, Madison, Morehouse, Richland, Tensas and 1 more	63 min
May 9, 8:50 PM CDT	Flash Flood Warning	JAN	Franklin, Madison, Morehouse, Richland	3 hr
May 9, 9:00 PM CDT	Special Weather Statement	JAN	Tensas	30 min
May 9, 9:48 PM CDT	Severe Thunderstorm Warning	JAN	Franklin	40 min
May 9, 10:44 PM CDT	Special Weather Statement	JAN	Tensas	31 min
May 9, 11:03 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	57 min
May 9, 9:36 PM CDT	Special Weather Statement	JAN	Chicot	54 min

Nearby

Flash Flood Warnings in Mississippi, 2024 Every flash flood warning in 2024

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.