On the 30th, an isolated severe storm toppled trees and damaged utility poles at Poughkeepsie (Sharp County). At least 400 power outages were reported.
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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.
The episode as NWS LZK wrote it up.
On the 30th, an isolated severe storm toppled trees and damaged utility poles at Poughkeepsie (Sharp County). At least 400 power outages were reported.
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 Little Rock, AR wrote its last area forecast discussion before the first event at Jun 30, 11:35 AM CST, 1 hour 59 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Little Rock AR 1235 PM CDT Sat Jun 30 2018 .UPDATE... Updated to include 18z aviation discussion below. && .AVIATION... VFR conditions along with mostly light south to southeasterly winds will be in place through the period. Isolated showers and thunderstorms will persist through sunset, mainly across eastern and northern Arkansas but should largely avoid area terminals. && .PREV DISCUSSION...(ISSUED 653 AM CDT Sat Jun 30 2018) UPDATE... Updated to include the 12Z aviation discussion. AVIATION... Some patchy MVFR BR was observed this morning across central/southern areas, and cannot rule out some minor vis restrictions between 12-13Z, otherwise VFR prevails through the TAF period. Winds will become southerly through the morning hours with speeds between 5 and 10 kts. Some gusts to 15 kts possible at northern terminals, and an outside chance of VCTS this afternoon, although confidence too low to mention in TAFs attm. Winds subside overnight to L/V or calm. Cooper PREV DISCUSSION...(ISSUED 413 AM CDT Sat Jun 30 2018) SHORT TERM...Today Through Sunday Night Dangerously hot conditions will continue through today and potentially into Sunday. Model guidance for the past several days has largely underestimated boundary layer moisture across the eastern half of the state, with evapotranspiration from agriculture interests likely contributing to the higher-than- progged dewpoint values. Bumped up dewpoints through the period more in line with past days' observed values for that reason. With air temps in the mid- to-upper 90s and dewpoint temps in the mid- to- upper 70s across and near the Delta, heat indices between 100 and 110 F are anticipated again this afternoon. Slightly lower dewpoint temps across western AR should keep heat index values below the 105 F advisory threshold. As of 08Z, the center of an expansive upper high was analyzed across the southeastern CONUS, with seasonally significant upper troughing across the Intermountain West. A weak upper low was noted across the Mid-South, caught within broad anticyclonic flow aloft. As the center of the upper ridge gradually shifts east today, the upper low will meander around the eastern half of the area before ejecting to the northeast tonight. Across eastern AR, an axis of slightly cooler H700 temps on the order of 9 C, coupled with a tongue of MUCAPE values in excess of 2000 J/kg and H850 dewpoint temps > 14 C will support some potential for diurnal thunderstorm development this afternoon. While a strong storm cannot be ruled out, severe weather is not expected. The upper ridge continues pushing east Sunday while an axis of relatively drier boundary layer air advects across the state through the day. With this drier air moving through, maximum air temps Sunday afternoon will likely climb a couple of degrees above what we see this afternoon, although less moisture should keep heat indices near or slightly below the 105 F advisory threshold. There is also some potential convection could develop along a weak boundary to our northwest and affect northwest AR late Sunday evening into Monday morning. Cooper LONG TERM...Monday Through Friday Night Medium range models are showing some hope to break the current pattern of hot conditions and replace them with just very warm conditions. I know it does not sound like much but we will take what we can get at this point. Not seeing much in the way of model differences this morning and a consensus of solutions seems prudent. Period initiates with upper ridge located over the NE quadrant of the country. A weak boundary will be located in the vicinity of NW Arkansas or SE Missouri but of more importance will be an slowly moving impulse tracking along the central gulf coast. This feature progged to move to the west and basically hug the coast moving into SE Texas by the end of Wednesday. While feature will only bring spotty precipitation to the area, mainly to the South and mainly diurnally driven, expected cloud cover will keep temperatures in check just a little bit. However, moisture levels will remain elevated with tropical moisture still in place and possibly added onto by said disturbance. Heat indices will remain elevated but likely short of criteria. Meanwhile, the aforementioned ridge will begin to retrograde from the NE part of the nation and make it all the way back to the central Rockies by the end of the period. With the ridge not parking itself overhead, temperatures will not be as hot but still average above normal for early July. Concerning precipitation, we have already discussed the impulse traveling along the gulf coast. Additional precipitation chances will be possible as subtle pieces of energy move through the prevailing flow as the upper ridge retrogrades. In this scenario the highest chances of precipitation, still not the greatest, will be over the eastern half of the state. Goudsward && .LZK Watches/Warnings/Advisories... Excessive Heat Warning until 8 PM CDT this evening FOR Faulkner- Independence-Jackson-Lonoke-Monroe-Prairie-Pulaski-White- Woodruff. Heat Advisory until 8 PM CDT this evening FOR Arkansas-Baxter- Boone-Bradley-Calhoun-Clark-Cleburne-Cleveland-Conway-Dallas- Desha-Drew-Fulton-Garland-Grant-Hot Spring-Izard-Jefferson- Lincoln-Marion-Ouachita-Perry-Pope-Saline-Searcy-Sharp-Stone-Van Buren-Yell. && Aviation...67
Hazardous Weather Outlook National Weather Service Little Rock AR 316 AM CDT Sat Jun 30 2018 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-011000- Boone-Marion-Baxter-Fulton-Sharp-Newton-Searcy-Stone-Izard- Independence-Johnson-Pope-Van Buren-Cleburne-Jackson-Logan-Conway- Faulkner-White-Woodruff-Scott-Yell-Perry-Polk-Montgomery-Garland- Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-Clark-Hot Spring-Grant- Jefferson-Arkansas-Dallas-Cleveland-Lincoln-Desha-Ouachita- Calhoun-Bradley-Drew- 316 AM CDT Sat Jun 30 2018 This Hazardous Weather Outlook is for a Large Part of Arkansas. .DAY ONE...Today and Tonight Dangerous heat will be possible again today, with widespread heat indices of 105 degrees or more across eastern Arkansas by afternoon. Additionally, isolated to scattered thunderstorms will be possible in the Delta this afternoon. The probability of severe weather is low. .DAYS TWO THROUGH SEVEN...Saturday Through Thursday Hot conditions will persist this weekend and into next week. Isolated to scattered thunderstorms will be possible next week, and increased cloud cover as well as rainfall could keep temperatures slightly cooler, although highs will remain largely in the 90s. .Spotter Information Statement... Spotter activation will not be needed. && Visit NWS Little Rock on the web. Go to http://weather.gov/lzk. Cooper/Goudsward
Special Weather Statement
National Weather Service Little Rock AR
156 PM CDT SAT JUN 30 2018
ARZ007-301945-
Sharp AR-
156 PM CDT SAT JUN 30 2018
...SIGNIFICANT WEATHER ADVISORY FOR SHARP COUNTY UNTIL 245 PM CDT...
At 155 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles northeast of Cave City, or 13 miles southeast of Ash Flat,
moving north at 20 mph.
Wind gusts up to 50 mph will be possible with this storm.
Locations impacted include...
Cherokee Village... Cave City...
Highland in Sharp County... Hardy...
Williford... Aetna...
Armstrong... Maxville...
Center... Calamine...
Poughkeepsie... Wirth...
Nelsonville... Ozark Acres...
Sitka...
LAT...LON 3648 9139 3647 9136 3642 9135 3642 9131
3639 9131 3637 9128 3633 9128 3633 9126
3624 9126 3624 9133 3623 9133 3623 9135
3590 9136 3592 9147 3594 9147 3594 9164
3634 9150 3634 9145 3650 9145 3650 9141
TIME...MOT...LOC 1855Z 197DEG 15KT 3606 9147
CavanaughThe Little Rock radar (KLZK), 155 km away, was scanning. The volume nearest the first event began at 19:34 UTC.
1 thunderstorm wind. Local standard time, as filed.
Trees were down and limbs were snapped. A few power pole cross arms were broken.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arkansas in 2018Every state in 2018This day in weather historyWarnings in Arkansas, June 2018
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: 768391.