Mississippi, 2018

Damaging Winds in Mississippi, July 20 to 21, 2018

July 20 to 21, 2018 · NWS JAN · 23 events in 12 counties and zones

With a moist and unstable airmass in place, showers and storms associated with a mesoscale complex moved into the region after midnight on the 21st. These storms pushed south and east through Mississippi and brought damaging winds to the region.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$655,000
Crop damage
None recorded
Events
23

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS JAN wrote it up.

With a moist and unstable airmass in place, showers and storms associated with a mesoscale complex moved into the region after midnight on the 21st. These storms pushed south and east through Mississippi and brought damaging winds to the region.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Jul 20, 10:56 PM CST, 4 minutes earlier.

Area forecast discussion, Jul 20, 10:56 PM CST, 4 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Jackson MS
1156 PM CDT Fri Jul 20 2018

...DANGEROUS HEAT STRESS CONTINUES WITH SEVERE STORMS POSSIBLE...

.UPDATE...
Updated for 06Z aviation discussion

&&

.AVIATION...
06Z TAF discussion:
Expecting storms to continue from the northwest overnight and
spread southeast. Right now, GLH GWO, GTR may see the bigger
impacts. Added tempo groups for worsening conditions. Some of the
storms may be strong to severe so added gusty winds at those
sites also. The rest of the sites may experience a few hours of
MVFR conditions for reduced visibility and briefly lowered
ceilings. Most of the area should have prevailing VFR conditions
by late afternoon Saturday./17/

&&

.DISCUSSION...
This has been a difficult week of unpredictable weather. Northwest
flow aloft has provided enough flow to force several rounds of
isolated severe storms through the CWA, just as it's about to do
tonight. None of the CAMs really have a handle on the situation.
The storms in Arkansas formed in the high theta e bullseye and are
now ascending and moving through the high CAPE environment. There
is plenty of instability in the atmosphere with 5200 J/kg from
the 00Z JAN sounding and about 35 kts of 0-6km shear. Already
there are reports of large hail coming out of the storms in
Arkansas. These storms will propagate into the CWA over the next
hour or two and move further into central MS. Again the greatest
threats remain as large hail and damaging wind gusts, but can't
rule out a tornado. May need to watch out for heavy rainfall as
well as storms may train to the southeast. /10/

Prior discussion below:

Through tomorrow:

Short segment of showers and thunderstorms coming in from the
northwest this morning managed to strengthen and produce some wind
damage across north-central MS going through the afternoon as it
moved into an environment of 4000 to 5000 j/kg of CAPE and more
than negligible wind shear. Severe thunderstorm watch # 291 was
issued to cover threat of this cell (and potential of other cells
instigated by tstorm outflow) going into SE MS through 7 pm. The
cell prompting the warning has weakened significantly in the past
hour but other cells are still trying to form along the outflow in
a volatile environment and some of the watch will be kept going
for now, at least until main triggering outflow moves to the
southeast or totally washes out.

Important to note that current Severe Thunderstorm Watch #291 does
not cover larger threat from severe storms that looks to develop
this evening into overnight hours. In the continued active
northwest flow pattern aloft there is a complex of storms just now
trying to take shape in southern MO. Similar to last night, a
growing complex should forward-propagate southeast into an air
mass over the Lower MS Valley containing 3000+ j/kg of CAPE well
into the evening hours. Convection last night produced wind damage
across portions of the Arklamiss Delta, but tonight the axis that
storm clusters should ride down is shifted a little east and there
is also potential for storms to hold onto their vigor longer into
the night, owing to more instability and a bit more wind shear to
aid in organization. The highest risk for damaging wind gusts
(possibly up to 70 mph in isolated spots) is across roughly the
Golden Triangle although there is still enough potential for
impact well into the heart of the region to support SPC expanding
their SLIGHT risk of severe weather with this afternoon's update.
There are some signals from HREF data to suggest training
convection could set up into northern zones late tonight into
tomorrow morning as low level flow vectors briefly veer to a
orientation more favorable for back-building. This will be an
aspect of the situation to watch closely as we go into this
evening, but for now we will refrain from hitting hard in the
HWO/graphics because of inherent uncertainties of finer scale
mesoscale evolution in this sort of setup.

We anticipate most of the convection should be ending and/or
shifting to our east very late tonight through midday Saturday
morning. There remains at least slight potential in central and
eastern zones that isolated potent storms could pop up in the
afternoon in the midst of convergent low level flow in the wake of
the main overnight convection. Considering the air mass will
remain very unstable and somewhat sheared on Saturday we will have
to monitor this potential later on Saturday closely. However, for
now, general model consensus suggests enough drying and capping aloft
coming in from the west Saturday afternoon to put a lid on most of
the worrisome convection. Otherwise, temperatures will still be
mainly in a range from the mid to upper 90s with a few readings
topping out at the century mark possible in far western zones.
Despite the continuing hot temperatures we do not anticipate
needing another excessive heat warning for tomorrow in any spots,
mainly because moisture looks to have a bit more ability to mix
out some into tomorrow afternoon. /BB/

Saturday night through middle of next week (Thursday):

Primary concerns looks to be dangerous heat lingering through late
weekend (Sunday), with somewhat brief drier conditions, less muggy &
less rain & storm chances by early week before gradual increase in
rain & storm chances through the extended period into next week.

Overall expect hot & dangerously humid conditions to be the main
concern. As a deep mid-level subtropical ridge slowly retrogrades
westward into the southern Plains & Rockies, a deep trough & cold
front will dig down through the Appalachians will dig down through
into the ArkLaMiss region by Saturday night & into Sunday morning.
This will slowly help thermal profiles cool (i.e. 925mb around 23-28
degrees C), which will help temperatures to only slowly cool down,
ever so slightly in the low-mid 90s while areas south of the front &
west of the Mississippi River should still be able to peak in the
upper 90s & possibly near 100 degrees in our far western Louisiana
parishes. Due to some slightly drier air in the inch to inch & a
quarter range & 850mb Theta E around 320K & isentropic subsidence,
expect drier conditions with lower surface dewpoints falling into
the upper 60s & better mixing. Thus, the heat issues should remain
confined south of I-20 & especially in the Highway 84 corridor to
over in the far southern Louisiana parishes. In these area south of
I-20 we could flirt with heat indices near the 105-110+ degree
range, with areas in the south more likely. Due to that, going to
keep an "Elevated" in the Highway 84 corridor & "Limited" south of I-
20 in the HWO. Will mainly keep this bridged with the previous
graphic & just mention in the HWO for now.

As the trough & cold front dig south, expect the upper trough to
gradually somewhat cut off over the northern Gulf & southeastern
states by early next week. This will lead to continued cooler
thermal profiles & some drier air advecting into the area, at least
by early week. Due to this, expect highs slowly cool down closer to
normals but still above normal in the low-mid 90s. In addition, lows
could fall into the upper 60s in the north-northeast, especially
into the Highway 82 corridor & Golden Triangle by Sunday & Monday
nights. Expect moisture advection to only slowly increase from east-
west through the week as the upper low slowly builds westward.
However, due to north-northeasterly low-level flow, moisture
advection will be slow to increase. Due to this, expect a dry & rain
free day on Monday before scattered rain & storm chances move back
in by early-mid portions of next week. Due to increasing rain
chances, cooler thermal profiles & some scattered cloud cover,
expect highs closer to normal & heat stress issues held in check.
Due to meager lapse rates & flow, not expecting much in the way of
stronger, more organized development. However, as PWs climb to above
2 inches & flow is light at times, some slow storm movement &
locally heavy downpours are possible. /DC/

&&

.PRELIMINARY POINT TEMPS/POPS...
Jackson       77  97  76  95 /  15  14  10   2
Meridian      76  96  75  95 /  29  30  21   5
Vicksburg     77  97  76  96 /   5  12   5   1
Hattiesburg   78  97  76  97 /   5  18   7   6
Natchez       76  98  77  97 /   0   9   2   2
Greenville    77  95  74  95 /  27  18   6   1
Greenwood     77  94  72  92 /  57  32  10   0

&&

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

&&

17
Hazardous weather outlook, Jul 20, 4:03 PM CST, 6 hours 57 minutes before
Hazardous Weather Outlook
National Weather Service Jackson MS
503 PM CDT Fri Jul 20 2018

ARZ074-075-LAZ008-009-016-MSZ040-212215-
Ashley-Chicot-West Carroll-East Carroll-Madison LA-Issaquena-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of southeast
Arkansas, northeast Louisiana, and west central Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Tonight

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Saturday

Isolated strong to severe storms will be possible late tonight as
a disturbance passes through the region. Wind gusts to 60 mph and
large hail will be possible. Heavy downpours may also lead to
localized flooding. Frequent dangerous lightning can also be
expected. Strong to severe storms may linger through Saturday
morning.

By Saturday afternoon highs will be in the upper 90s
and heat indices will range from 105 to 110. Precautions should
be taken to avoid heat stress. Stay hydrated and wear light, loose
fitted clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

High temperatures from the mid to upper 90s will combine with
high humidity levels to produce heat indices near 105 Sunday.
Precautions should be taken to avoid strenuous outdoor activities.
Check on those vulnerable to heat stress. Stay hydrated and wear
light, loose fitted clothing.

(https://www.weather.gov/images/jan/graphicast/3.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight.

MSZ018-019-034-212215-
Bolivar-Sunflower-Washington-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of northwest
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Tonight

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Saturday

Severe storms will be possible late tonight as a disturbance
passes through the region. Wind gusts to 70 mph and quarter sized
hail will be possible. Heavy downpours may also lead to localized
flooding. Frequent dangerous lightning can also be expected.
Strong to severe storms may linger through Saturday morning.

By Saturday afternoon highs will be in the upper 90s and heat
indices will range from 105 to 110. Precautions should be taken to
avoid heat stress. Stay hydrated and wear light, loose fitted
clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight.

MSZ025>029-031>033-037>039-044>046-051-052-057-058-212215-
Leflore-Grenada-Carroll-Montgomery-Webster-Lowndes-Choctaw-
Oktibbeha-Attala-Winston-Noxubee-Leake-Neshoba-Kemper-Newton-
Lauderdale-Jasper-Clarke-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of central
Mississippi, east central Mississippi, north central Mississippi,
and northeast Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Tonight

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Severe storms will be possible late tonight as a disturbance
passes through the region. Wind gusts to 70 mph and quarter sized
hail will be possible. Heavy downpours may also lead to localized
flooding. Frequent dangerous lightning can also be expected.
Strong to severe storms may linger through Saturday morning.

By Saturday afternoon highs will be in the upper 90s and heat
indices will range from 105 to 110. Precautions should be taken to
avoid heat stress. Stay hydrated and wear light, loose fitted
clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability of widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ030-212215-
Clay-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of northeast
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Enhanced
TIMING...Mainly Tonight

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Severe storms will be likely late tonight as a disturbance passes
through the region. Wind gusts in excess of 70 mph and golf ball
sized hail will be possible. Tornadoes can not be ruled out.
Heavy downpours may also lead to localized flooding. Frequent
dangerous lightning can also be expected. Severe storms may linger
through Saturday morning.

By Saturday afternoon highs will be in the upper 90s and heat
indices will be near 105. Precautions should be taken to avoid
heat stress. Stay hydrated and wear light, loose fitted clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

The probability for widespread hazardous weather is low.

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

LAZ007-015-023>026-MSZ060-212215-
Morehouse-Richland-Franklin LA-Catahoula-Tensas-Concordia-Adams-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of northeast
Louisiana, and southwest Mississippi.

.DAY ONE...Tonight and Saturday

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Saturday

Highs in the upper 90s combined with high humidity will lead to
heat indices from 105 to 110. Precautions should be taken to
avoid heat stress. Stay hydrated and wear light, loose fitted
clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

High temperatures from the mid to upper 90s will combine with
high humidity levels to produce heat indices from 105 to 110
Sunday. Precautions should be taken to avoid strenuous outdoor
activities. Check on those vulnerable to heat stress. Stay
hydrated and wear light, loose fitted clothing.

(https://www.weather.gov/images/jan/graphicast/3.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations is not expected through next Thursday.

MSZ035-036-042-043-049-050-056-212215-
Humphreys-Holmes-Yazoo-Madison MS-Rankin-Scott-Smith-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of central
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Slight
TIMING...Mainly Tonight

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Saturday

Severe storms will be possible late tonight as a disturbance
passes through the region. Wind gusts to 70 mph and quarter sized
hail will be possible. Heavy downpours may also lead to localized
flooding. Frequent dangerous lightning can also be expected.
Strong to severe storms may linger through Saturday morning.

By Saturday afternoon highs will be in the upper 90s and heat
indices will range from 105 to 110. Precautions should be taken to
avoid heat stress. Stay hydrated and wear light, loose fitted
clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

High temperatures from the mid to upper 90s will combine with
high humidity levels to produce heat indices near 105 Sunday.
Precautions should be taken to avoid strenuous outdoor activities.
Check on those vulnerable to heat stress. Stay hydrated and wear
light, loose fitted clothing.

(https://www.weather.gov/images/jan/graphicast/3.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ041-047-048-053>055-061>065-072>074-212215-
Sharkey-Warren-Hinds-Claiborne-Copiah-Simpson-Franklin MS-Lincoln-
Lawrence-Jefferson Davis-Covington-Marion-Lamar-Forrest-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of central
Mississippi, south central Mississippi, and west central
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Tonight through Saturday

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Saturday

Severe storms will be possible late tonight as a disturbance
passes through the region. Wind gusts to 60 mph and quarter sized
hail will be possible. Heavy downpours may also lead to localized
flooding. Frequent dangerous lightning can also be expected.
Strong to severe storms may linger through Saturday morning.

By Saturday afternoon highs will be in the upper 90s and heat
indices will range from 105 to 110. Precautions should be taken to
avoid heat stress. Stay hydrated and wear light, loose fitted
clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

High temperatures from the mid to upper 90s will combine with
high humidity levels to produce heat indices near 105 Sunday.
Precautions should be taken to avoid strenuous outdoor activities.
Check on those vulnerable to heat stress. Stay hydrated and wear
light, loose fitted clothing.

(https://www.weather.gov/images/jan/graphicast/3.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

MSZ059-212215-
Jefferson-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of southwest
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Saturday

EXCESSIVE HEAT
THREAT...Elevated
TIMING...Saturday

Isolated strong to severe storms will be possible late tonight as
a disturbance passes through the region. Wind gusts to 70 mph and
quarter sized hail will be possible. Heavy downpours may also
lead to localized flooding. Frequent dangerous lightning can also
be expected. Strong to severe storms may linger through Saturday
morning.

By Saturday afternoon highs will be in the upper 90s and heat
indices will range from 105 to 110. Precautions should be taken to
avoid heat stress. Stay hydrated and wear light, loose fitted
clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

High temperatures from the mid to upper 90s will combine with
high humidity levels to produce heat indices 105 to 110 Sunday.
Precautions should be taken to avoid strenuous outdoor activities.
Check on those vulnerable to heat stress. Stay hydrated and wear
light, loose fitted clothing.

(https://www.weather.gov/images/jan/graphicast/3.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region Saturday.

MSZ066-212215-
Jones-
503 PM CDT Fri Jul 20 2018

This hazardous weather outlook is for portions of southeast
Mississippi.

.DAY ONE...Tonight and Saturday

SEVERE THUNDERSTORMS
THREAT...Marginal
TIMING...Tonight through Saturday

EXCESSIVE HEAT
THREAT...Limited
TIMING...Saturday

Isolated strong to severe storms will be possible late tonight as
a disturbance passes through the region. Wind gusts to 70 mph and
quarter sized hail will be possible. Heavy downpours may also
lead to localized flooding. Frequent dangerous lightning can also
be expected. Strong to severe storms may linger through Saturday
morning.

By Saturday afternoon highs will be in the upper 90s and heat
indices will range from 105 to 110. Precautions should be taken to
avoid heat stress. Stay hydrated and wear light, loose fitted
clothing.

(https://www.weather.gov/images/jan/graphicast/1.png)
(https://www.weather.gov/images/jan/graphicast/3.png)

.DAYS TWO THROUGH SEVEN...Saturday night through Thursday

High temperatures from the mid to upper 90s will combine with
high humidity levels to produce heat indices from 105 to 110
Sunday. Precautions should be taken to avoid strenuous outdoor
activities. Check on those vulnerable to heat stress. Stay
hydrated and wear light, loose fitted clothing.

(https://www.weather.gov/images/jan/graphicast/3.png)

.SPOTTER CALL TO ACTION STATEMENT...
The activation of storm spotters, HAM radio operators, and
emergency management personnel in support of severe weather
operations may be needed for portions of the region tonight
through Saturday.

21

&&

...HAZARD LEGEND...

*SEVERE THUNDERSTORMS*
High...Significant severe thunderstorms are expected.
Moderate...Severe storms expected with significant
 severe weather possible.
Enhanced...Severe storms expected.
Slight...Severe storms possible.
Marginal...Isolated severe storms possible.

*EXCESSIVE HEAT*
Extreme...Maximum heat index greater than 110 degrees for 3 or
 more days in a row and/or air temperatures greater than 107
 degrees.
Significant...Maximum heat index greater than 110 degrees
 and/or air temperatures greater than 105 degrees.
Elevated...Maximum heat index 105 to 110 degrees and/or air
 temperatures greater than 103 degrees.
Limited...Maximum heat index near 105 degrees and/or air
 temperatures 100 to 103 degrees.

...USEFUL WEATHER WEB PAGES (URLS)...

NWS JAN Home page...
   https://www.weather.gov/jan
Stay Aware, Stay Safe NWS JAN Briefing Page...
   https://www.weather.gov/jan/safe
Latest Weather Briefing...
   https://www.weather.gov/jan/weather_briefing

Tropical page...
   https://www.weather.gov/jan/srh/tropical?office=jan
National Hurricane Center Home Page...
   https://www.nhc.noaa.gov/
Find NWS JAN on Facebook...
   https://www.facebook.com/NWSJacksonMS
Follow NWS JAN on Twitter...
   @NWSJacksonMS
Follow NWS JAN on Youtube...
   https://www.youtube.com/user/NWSJacksonMiss

...ADDITIONAL URLS FOR SEVERE WEATHER ISSUES...

Storm Prediction Center (SPC)...
   https://www.spc.noaa.gov/
Meso Analysis...
   https://www.spc.noaa.gov/exper/mesoanalysis/
Day 1 through 3 Outlooks...
   https://www.spc.noaa.gov/products/outlook/
Storm Reports...
   https://www.spc.noaa.gov/climo/online/

In the hours before

Special weather statement, Jul 20, 10:27 PM CST, 33 minutes before
Special Weather Statement
National Weather Service Jackson MS
1127 PM CDT FRI JUL 20 2018

MSZ018-019-025-034-210515-
Washington MS-Leflore MS-Sunflower MS-Bolivar MS-
1127 PM CDT FRI JUL 20 2018

...A STRONG THUNDERSTORM WILL AFFECT SUNFLOWER...NORTHERN LEFLORE...
NORTHEASTERN WASHINGTON AND SOUTHEASTERN BOLIVAR COUNTIES UNTIL 1215
AM CDT...

At 1127 PM CDT, Meteorologists were tracking a strong thunderstorm
over Renova, or over Cleveland, moving southeast at 45 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

This strong thunderstorm will be near...
  Cleveland and Boyle around 1135 PM CDT.
  Ruleville around 1140 PM CDT.
  Blaine around 1150 PM CDT.
  Sunflower around 1155 PM CDT.
  Moorhead around 1205 AM CDT.

Other locations impacted by this storm include Doddsville, Schlater,
Pace and Merigold.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

High winds can bring down trees and large limbs resulting in serious
injury or property damage. Exercise extreme caution when outdoors
during such strong winds...and be especially aware of older trees.

&&

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
north central and northwestern Mississippi.

LAT...LON 3383 9045 3381 9045 3381 9040 3375 9029
      3373 9031 3370 9030 3370 9027 3373 9025
      3367 9013 3333 9071 3375 9104 3395 9068
TIME...MOT...LOC 0427Z 321DEG 37KT 3377 9076

GRG

The radar

The Little Rock radar (KLZK), 156 km away, was scanning. The volume nearest the first event began at 05:00 UTC.

Open the radar archive at this moment

Event by event

23 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Bolivar

When
July 20, 11:00 PM CST
Where
Bolivar County, 0.57 mi E of Gunnison
Measured
50 kt (58 mph) estimated gust
Property damage
$2,000
Reported by
Law Enforcement
Coordinates
33.950, -90.940

A tree was blown down and partially blocked Highway 1.

Thunderstorm Wind, Bolivar

When
July 21, 3:15 AM CST to 3:50 AM CST
Where
Bolivar County, 1.63 mi ESE of Rochdale Watta Arpt to 5.04 mi SE of Boyle
Measured
63 kt (72 mph) estimated gust
Property damage
$70,000
Reported by
Law Enforcement
Coordinates
34.093, -90.823

Numerous trees and power lines were blown down across Bolivar County. A 58mph wind gust was measured at Cleveland Municipal Airport.

Thunderstorm Wind, Sunflower

When
July 21, 3:30 AM CST
Where
Sunflower County, 2.44 mi WNW of Parchman
Measured
74 kt (85 mph) estimated gust
Property damage
$300,000
Reported by
Emergency Manager
Coordinates
33.929, -90.541

Several structures at the Parchman correctional facility had portions of the roof torn off. Other metal buildings had roll up doors blown in and some roof damage. Several power poles were snapped in the area as well. Several trees were uprooted or snapped in the area and across the northern portion of the county. Damage photos suggested wind gusts of at least 85mph.

Thunderstorm Wind, Sunflower

When
July 21, 3:37 AM CST to 3:50 AM CST
Where
Sunflower County, 0.69 mi S of Drew to 4.76 mi E of Sunflower
Measured
63 kt (72 mph) estimated gust
Property damage
$50,000
Reported by
Emergency Manager
Coordinates
33.810, -90.530

Many trees were blown down around Drew and Ruleville along with power lines blown down and poles snapped. A roof was peeled off of a church in Blaine.

Thunderstorm Wind, Sunflower

When
July 21, 3:53 AM CST
Where
Sunflower County, 0.45 mi W of Indianola
Measured
50 kt (58 mph) estimated gust
Property damage
$8,000
Reported by
Law Enforcement
Coordinates
33.449, -90.658

A tree was blown down onto power lines on Mimosa Drive in Indianola.

Thunderstorm Wind, Leflore

When
July 21, 3:57 AM CST
Where
Leflore County, 0.58 mi E of Money
Measured
53 kt (61 mph) estimated gust
Property damage
$30,000
Reported by
Law Enforcement
Coordinates
33.650, -90.210

Trees were blown down in Money.

Thunderstorm Wind, Leflore

When
July 21, 4:02 AM CST
Where
Leflore County, 1.38 mi N of Ft Loring
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Law Enforcement
Coordinates
33.520, -90.250

A tree was blown down along County Road 145 at Florewood River Plantation State Park.

Thunderstorm Wind, Humphreys

When
July 21, 4:09 AM CST
Where
Humphreys County, 0.9 mi SE of Isola
Measured
50 kt (58 mph) estimated gust
Property damage
$10,000
Reported by
Law Enforcement
Coordinates
33.260, -90.590

Trees were blown down, including one that fell onto a power line.

Thunderstorm Wind, Carroll

When
July 21, 4:10 AM CST to 4:35 AM CST
Where
Carroll County, 0.83 mi E of Teoc to 2.98 mi N of Wiltshire
Measured
55 kt (63 mph) estimated gust
Property damage
$55,000
Reported by
Law Enforcement
Coordinates
33.582, -90.056

Numerous trees and power lines were blown down across the northern part of the county, especially just north of Carrollton. Multiple trees were blown down along Highway 17 near Coila. Numerous trees were also blown down in the southern part of the county. A 53 mph wind gust was observed at Greenwood Leflore Airport.

Thunderstorm Wind, Leflore

When
July 21, 4:12 AM CST
Where
Leflore County, 1.01 mi SSE of Browning
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
Law Enforcement
Coordinates
33.506, -90.117

A tree was blown down along Sunset Circle.

Thunderstorm Wind, Humphreys

When
July 21, 4:15 AM CST
Where
Humphreys County, 0.83 mi NE of Belzoni
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
Public
Coordinates
33.188, -90.490

A tree was blown down on China Street.

Thunderstorm Wind, Holmes

When
July 21, 4:22 AM CST
Where
Holmes County, 2.2 mi SSE of Garden Chapel
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
Law Enforcement
Coordinates
33.203, -90.160

A tree was blown down along Rosebank-Mount Olive Road.

Thunderstorm Wind, Holmes

When
July 21, 4:27 AM CST
Where
Holmes County, 1.67 mi SSW of Crossing
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
Law Enforcement
Coordinates
33.099, -90.144

A tree was blown down along New Hope Road.

Thunderstorm Wind, Yazoo

When
July 21, 4:35 AM CST to 4:36 AM CST
Where
Yazoo County, 0.31 mi ENE of Yazoo City Barrier A to 0.17 mi ESE of Yazoo Jctn
Measured
50 kt (58 mph) estimated gust
Property damage
$7,000
Reported by
Law Enforcement
Coordinates
32.872, -90.395

A tree was blown down along Grand Avenue and another was blown down along Old Tchula Road.

Thunderstorm Wind, Holmes

When
July 21, 4:38 AM CST to 4:43 AM CST
Where
Holmes County, 2.43 mi NE of Bowling Green to 0.75 mi SE of Edsville
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Law Enforcement
Coordinates
33.191, -89.896

A tree was blown down along Ellis Road and another tree was blown down along Old Wilson Road.

Thunderstorm Wind, Attala

When
July 21, 4:45 AM CST to 4:55 AM CST
Where
Attala County, 1.66 mi NNE of Boyette to 3.78 mi SSE of Mc Adams
Measured
54 kt (62 mph) estimated gust
Property damage
$25,000
Reported by
Law Enforcement
Coordinates
33.050, -89.815

Multiple trees and power lines were blown down in the southwest part of the county.

Thunderstorm Wind, Madison

When
July 21, 4:48 AM CST to 4:55 AM CST
Where
Madison County, 0.58 mi W of Camden to 2.99 mi WSW of Farmhaven
Measured
50 kt (58 mph) estimated gust
Property damage
$50,000
Reported by
Law Enforcement
Coordinates
32.780, -89.840

Trees were blown down, including one on a power line in Camden. Multiple trees were blown down along Highway 43 between Camden and Sharon. Multiple trees were also blown down on Highway 16 and trees were blown down in Sharon.

Thunderstorm Wind, Holmes

When
July 21, 4:49 AM CST
Where
Holmes County, 1.21 mi ENE of Durant
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
Law Enforcement
Coordinates
33.087, -89.851

A tree was blown down Bowling Green Road.

Thunderstorm Wind, Leake

When
July 21, 4:52 AM CST to 4:55 AM CST
Where
Leake County, 3.55 mi W of St Ann to 1.14 mi WNW of Ofahoma
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Law Enforcement
Coordinates
32.770, -89.710

A tree was blown down along Red Dog Road and another tree was blown down along Old Robinson Road.

Thunderstorm Wind, Leake

When
July 21, 5:00 AM CST
Where
Leake County, 1.1 mi SW of Good Hope
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
Law Enforcement
Coordinates
32.617, -89.641

A tree was blown down along Welch Road.

Thunderstorm Wind, Hinds

When
July 21, 5:18 AM CST
Where
Hinds County, 1.5 mi SSE of Dixon
Measured
50 kt (58 mph) estimated gust
Property damage
$5,000
Reported by
Broadcast Media
Coordinates
32.310, -90.240

A tree was blown down and blocked the entrance to an apartment building.

Thunderstorm Wind, Rankin

When
July 21, 5:21 AM CST
Where
Rankin County, 2.82 mi NW of Langford
Measured
50 kt (58 mph) estimated gust
Property damage
$7,000
Reported by
Law Enforcement
Coordinates
32.374, -90.009

A tree fell onto multiple power lines near the intersection of Camelia Drive and Spillway Road.

Thunderstorm Wind, Rankin

When
July 21, 5:29 AM CST
Where
Rankin County, 2.38 mi NNE of Value
Measured
50 kt (58 mph) estimated gust
Property damage
$3,000
Reported by
NWS Employee
Coordinates
32.311, -89.982

A tree blew down.

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Mississippi in 2018Every state in 2018This day in weather historyWarnings in Mississippi, July 2018

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 759859, 759861, 759862, 759863, 759907, 759869, 759870, 759879, 760281, 759871, 759880, 760284, 760285, 760289, 760286, 760292, 760302, 760288, 760310, 760313, 760315, 760320, 760321.