Alert archive / Mississippi / Special Weather Statements in 2018
Special Weather Statement, NWS Jackson, MS
NWS Jackson, MS issued this special weather statement at Jun 18, 2018, 5:01 PM CDT for Warren County, Mississippi. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2018, 5:01 PM CDT (22:01 UTC)
- Expired
- Jun 18, 2018, 5:30 PM CDT
- In force
- 29 min
- Issued by
- NWS Jackson, MS
County Warren County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 76 km from the middle of the area, began a volume at 22:05 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 12:00Z, 10.0 hours before the alert went out and 66 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
- 462 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 1145 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jun 18, 3:40 PM CDT, 1 hour 21 minutes earlier.
Area forecast discussion, Jun 18, 3:40 PM CDT, 1 hour 21 minutes before
Area Forecast Discussion National Weather Service Jackson MS 340 PM CDT Mon Jun 18 2018 .DISCUSSION... Tonight and Tuesday: Warm moist air will keep the area muggy for another day. With a the ridge to the east and the disturbance to the southwest, there will be a steady flow of moisture into the region. Although much of the activity was limited to the west/southwest this morning. A boundary across the center of the cwa has helped to fuel convection. A few storms have produced wind gusts near 40 mph. While widespread severe storms were not anticipated, occasional 40-45 mph gusts can blow a few things over. Looking for the convection to taper off after 00z with a few showers lingering across the northern portions of the area. With the system to the southwest moving very little, but having some tropical characteristics, left a chance of rain in the southwest through the night. The system doesn't move much, so should see more of the same for tomorrow. Showers in the west shifting as the disturbance wavers near the coast. Rainfall rates were light and steady, so not looking for flooding risks at this point. Since clouds may be more widespread tomorrow, convection should be limited but light southwest low level flow and any areas with a good amount of sun may see a few thunderstorms with gusty winds. /7/ Tuesday night through Sunday: By Tuesday night & into Wednesday morning, the pattern will consist of moist southerly flow while the deep tropical moisture plume will exist off to the west. Our area will be situated between that and the mid-level ridge over the southeast CONUS & Gulf of Mexico. Due to the moist southerly flow and this weak remnant shortwave beginning to be picked up in the mid-upper level flow, expect efficient moisture transport & return to continue. Due to this, expect continued warmth and humidity. In addition nearly 2+ inch PWs will help spark scattered showers & storms. Right now lapse rates are meager but some low-mid level flow could spark some stronger storms with brief gusty winds if they orient more orthogonal to the vectors. As a trough digs down by mid-late week and this shortwave becomes picked up in the flow, some decent height falls will occur ahead of closed low & a cold front moving into the area. This will help spark more scattered-numerous showers & storms going into Thursday-Friday. Due to this, this could hold down temperatures and any heat stress concerns over the area as highs only peak in the upper 80s-low 90s, just near or a touch below normal. Slightly lowered PoPs Friday afternoon in the south due to some slightly drier air possibly advecting in. There are some lapse rates and flow as the trough digs through to the north so will have to keep an eye on that for any strong-severe potential. In addition, CIPS has some analogs of a few severe storms by the end of the week. For now, going to hold off anything in the HWO with it being more on the marginal end of things. As we go into the weekend, in the wake of the closed low, mid-level ridging will strengthen over southeast states & into the eastern Gulf. Due to warming thermal profiles, with 925mb temperatures in the low 20s degree C. range, & moisture profiles drying out somewhat (i.e. PWs around the 1.5-1.75 inch range), couldn't rule out some warmer than normal temperatures getting into the mid 90s. Overall main issue could be increasing heat stress. Due to lingering moisture & warming temperatures, heat indices could approach the 100 to briefly 105 degrees, especially in the west by the weekend (i.e. Saturday & especially Sunday). CPC is highlighting this in their extended outlook, which includes Sunday, and CIPS analogs show potential for some near heat advisory criteria. We may have to advertise this as we get closer. For now, kept the HWO/graphics clear of any mention just yet. /DC/ && .AVIATION... 18Z TAF discussion: VFR conditions should prevail at most sites through the afternoon. Low clouds may briefly lead to MVFR conditions. Light rain was occurring around HBG, but not likely to cause restrictions to visibility within the next hour or two. May add VCSH/shra to HBG and JAN for late afternoon. Locations with rain may see some patchy fog overnight. May add patchy fog to HBG. High pressure will cause similar conditions tomorrow with most locations missing the rain. Ceilings may lower briefly. Otherwise, VFR conditions should prevail. /7/ && .PRELIMINARY POINT TEMPS/POPS... Jackson 71 90 73 91 / 17 20 8 34 Meridian 71 93 73 93 / 1 17 5 29 Vicksburg 72 90 73 91 / 18 36 13 38 Hattiesburg 72 92 72 92 / 19 28 6 28 Natchez 71 89 73 90 / 18 37 17 42 Greenville 73 89 73 88 / 13 20 15 40 Greenwood 72 89 73 89 / 3 17 12 36 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...None. LA...None. AR...None. && 7/DC
Hazardous weather outlook, Jun 18, 2:24 PM CDT, 2 hours 37 minutes before
Hazardous Weather Outlook National Weather Service Jackson MS 224 PM CDT Mon Jun 18 2018 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074- 191930- Ashley-Chicot-Morehouse-West Carroll-East Carroll-Richland- Madison LA-Franklin LA-Catahoula-Tensas-Concordia-Bolivar- Sunflower-Leflore-Grenada-Carroll-Montgomery-Webster-Clay-Lowndes- Choctaw-Oktibbeha-Washington-Humphreys-Holmes-Attala-Winston- Noxubee-Issaquena-Sharkey-Yazoo-Madison MS-Leake-Neshoba-Kemper- Warren-Hinds-Rankin-Scott-Newton-Lauderdale-Claiborne-Copiah- Simpson-Smith-Jasper-Clarke-Jefferson-Adams-Franklin MS-Lincoln- Lawrence-Jefferson Davis-Covington-Jones-Marion-Lamar-Forrest- 224 PM CDT Mon Jun 18 2018 This hazardous weather outlook is for portions of southeast Arkansas, northeast Louisiana, central Mississippi, north central Mississippi, and south central Mississippi. .DAY ONE...Tonight and Tuesday The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday night through Sunday 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 is not expected through next Sunday. 21 && ...HAZARD LEGEND... No short term hazards expected. ...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
In the hours before
Special weather statement, Jun 18, 4:27 PM CDT, 34 minutes before
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</html>The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 7:52 PM CDT | Special Weather Statement | JAN | Lowndes | 23 min |
| Jun 17, 7:56 PM CDT | Severe Thunderstorm Warning | JAN | Clay, Lowndes | 49 min |
| Jun 18, 2:47 PM CDT | Special Weather Statement | JAN | Covington, Forrest, Jones, Lamar | 28 min |
| Jun 18, 2:52 PM CDT | Special Weather Statement | JAN | Sunflower | 23 min |
| Jun 18, 3:21 PM CDT | Special Weather Statement | JAN | Copiah | 24 min |
| Jun 18, 3:23 PM CDT | Special Weather Statement | JAN | Covington, Jefferson Davis | 37 min |
| Jun 18, 3:24 PM CDT | Special Weather Statement | JAN | Bolivar | 36 min |
| Jun 18, 3:25 PM CDT | Special Weather Statement | JAN | Bolivar | 35 min |
| Jun 18, 3:34 PM CDT | Special Weather Statement | JAN | Humphreys | 26 min |
| Jun 18, 3:45 PM CDT | Severe Thunderstorm Warning | JAN | Copiah, Lawrence, Lincoln | 25 min |
| Jun 18, 3:52 PM CDT | Severe Thunderstorm Warning | JAN | Holmes, Humphreys, Leflore, Sunflower | 38 min |
| Jun 18, 4:09 PM CDT | Special Weather Statement | JAN | Simpson | 36 min |
| Jun 18, 4:27 PM CDT | Special Weather Statement | JAN | Warren | 33 min |
| Jun 18, 4:28 PM CDT | Special Weather Statement | JAN | Rankin | 32 min |
| Jun 18, 4:30 PM CDT | Special Weather Statement | JAN | Leflore | 30 min |
| Jun 18, 4:37 PM CDT | Special Weather Statement | JAN | Hinds | 23 min |
| Jun 18, 4:45 PM CDT | Special Weather Statement | JAN | Rankin | 30 min |
| Jun 18, 5:11 PM CDT | Special Weather Statement | JAN | Rankin | 34 min |
| Jun 18, 5:24 PM CDT | Special Weather Statement | JAN | Sharkey | 36 min |
| Jun 18, 5:58 PM CDT | Special Weather Statement | JAN | Humphreys, Issaquena, Sharkey | 32 min |
Nearby
Special Weather Statements in Mississippi, 2018Every special weather statement 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.