Alert archive / Mississippi / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 316, NWS Jackson, MS
NWS Jackson, MS issued this severe thunderstorm warning at Jul 20, 2018, 11:44 PM CDT for Bolivar County, Mississippi. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 20, 2018, 11:44 PM CDT (04:44 UTC)
- Expired
- Jul 21, 2018, 12:34 AM CDT
- In force
- 50 min
- Issued by
- NWS Jackson, MS
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Bolivar County, MS
The radar
The Little Rock radar (KLZK), 172 km from the middle of the area, began a volume at 04:44 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 20, 9:08 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Little Rock, AR (KBYH), launched 00:00Z, 4.7 hours before the alert went out and 143 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
- 3694 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1760 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 220 m²/s²
- 0-3 km storm-relative helicity
- 407 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 28.4
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 20, 10:00 PM CDT, 1 hour 44 minutes earlier.
Area forecast discussion, Jul 20, 10:00 PM CDT, 1 hour 44 minutes before
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</html>Hazardous weather outlook, Jul 20, 5:03 PM CDT, 6 hours 41 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, 11:27 PM CDT, 17 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
GRGThe office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 10:31 PM CDT | Tornado Warning | JAN | Bolivar | 45 min |
| Jul 20, 11:27 PM CDT | Special Weather Statement | JAN | Bolivar, Sunflower | 48 min |
| Jul 21, 12:09 AM CDT | Special Weather Statement | JAN | Leflore | 51 min |
| Jul 21, 12:16 AM CDT | Special Weather Statement | JAN | Sunflower | 29 min |
| Jul 21, 12:39 AM CDT | Special Weather Statement | JAN | Holmes | 36 min |
| Jul 21, 3:45 AM CDT | Special Weather Statement | JAN | Bolivar | 45 min |
| Jul 21, 4:01 AM CDT | Severe Thunderstorm Warning | JAN | Bolivar, Sunflower | 59 min |
| Jul 21, 4:25 AM CDT | Severe Thunderstorm Warning | JAN | Bolivar, Sunflower, Washington | 65 min |
| Jul 21, 4:28 AM CDT | Severe Thunderstorm Warning | JAN | Carroll, Grenada, Leflore | 62 min |
| Jul 21, 4:56 AM CDT | Severe Thunderstorm Warning | JAN | Carroll, Holmes, Humphreys | 64 min |
| Jul 21, 5:23 AM CDT | Severe Thunderstorm Warning | JAN | Madison, Yazoo | 56 min |
| Jul 21, 5:30 AM CDT | Severe Thunderstorm Warning | JAN | Attala, Leake | 48 min |
| Jul 21, 6:02 AM CDT | Severe Thunderstorm Warning | JAN | Hinds, Rankin, Scott | 43 min |
| Jul 21, 2:27 PM CDT | Heat Advisory | JAN | Adams, Claiborne, Copiah, Covington, Forrest, Franklin and 6 more | 30 hr |
Nearby
Severe Thunderstorm Warnings in Mississippi, 2018Every severe thunderstorm warning in 2018
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.