A few small thunderstorms developed in the mid afternoon hours in a moist air-mass. The strongest storm produced some damaging wind.
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The episode as NWS DVN wrote it up.
A few small thunderstorms developed in the mid afternoon hours in a moist air-mass. The strongest storm produced some damaging wind.
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 Quad Cities, IA wrote its last area forecast discussion before the first event at May 24, 2:43 PM CST, 47 minutes earlier.
Area Forecast Discussion National Weather Service Quad Cities IA IL 343 PM CDT TUE MAY 24 2016 .SYNOPSIS... Issued at 330 PM CDT Tue May 24 2016 Mid-level ridge axis has moved east of the Upper Mississippi River Valley. SSW sfc flow finally pushed upper 50 to mid 60 dewpoints into E Iowa/W Illinois. Temps ranged from lower 80s west to mid or upper 80s central and east with a cool zone in the middle 70s around Dubuque. Isolated showers have developed from time to time but majority of the forecast area has remained dry. && .SHORT TERM...(THIS EVENING THROUGH Wednesday) ISSUED AT 330 PM CDT Tue May 24 2016 This Evening and Tonight...Weak forcing and lack of organized low-level jet, but presence of 1000-2000 J/kg MUCAPE and little SBCIN, supports the persistence forecast of isolated to sct showers and storms with more areas missing out on the rain than receiving it. Overnight lows influenced by higher low-level moisture, for a change, will be quite mild in the mid 60s. Wednesday...Clusters of convection will form across Kansas this evening (Tuesday) and grow upscale into an MCS overnight as it moves to the ENE. Pre-existing MUCAPE of +2000 J/kg across E Iowa/W Illinois from the mid morning into the aftn should help maintain this line of storms, in somewhat of a weakening phase, into the DVN CWA. Weaker 0-6 km bulk shear of ~35 kts or less lowers overall severe threat, but will have to watch for possible reintensification of the convection by midday into the aftn as it coincides with daytime heating. Thunderstorm potential: A few strong to severe storms are possible with marginally severe hail up to quarter size and wind gusts up to 60 mph the primary threats. However, cannot ignore high PWATS near 1.50 inches and potential for - localized - very heavy rainfall rates. Storm motion vectors are generally greater than 20 kts thus am not too concerned about training of storms. Aside from the risk for more numerous showers and storms compared to Monday and Tuesday, sfc dewpoints into the mid/upper 60s will make it feel increasingly humid. High temps are forecast in the lower 80s as clouds/rain/humidity keep them in check. Uttech .LONG TERM...(Wednesday NIGHT THROUGH next Tuesday) ISSUED AT 330 PM CDT Tue May 24 2016 Wednesday night...12z run model run ensemble using their MCS forcing tools suggest the DVN CWA to lay mainly in between ongoing main lift/forcing swaths...one just to the southeast acrs mo into east central IL/Indiana, and another along the IA/MN border on north into MN and WI. These zones could very well be ongoing with convective systems at the start of The period and then propagate east- northeastward away from the local area by mid evening and into the overnight. But with several models, including the 12z ECMWF having a secondary warm front draped acrs the CWA off the MN wave, will have to keep relatively high CHC to likely POPs going for much of the night. With projected PWATs of 1.3 to 1.5 inches, more of a locally heavy rain threat while bulk shear of 20-30 kts and waning CAPES makes for a marginal severe threat especially later at night. Thursday...with both upper ridging and a lobe of sfc ridging in the wake of the passing Wed-Wed night wave, much of the day may be dry and thus allow to heat up into the upper 80s acrs much of the CWA with some sunshine. A 90 may even be possible, although higher humidity may limit that chance somewhat. Knocking back some of the NAM and GFS sfc Dpts which are in the low to mid 70s, down to mid to upper 60s or around 70, still makes for a CAPE build up 3000-4500+ by late afternoon. MCS spawning parameters come together late Thu afternoon and early evening acrs the east central plains-eastern KS into NW MO/SW IA...with the potential of portions of that system feeding acrs into the rich THTA-E airmass into the local area overnight into early Friday morning. With better shear profiles off to the west and northwest Thu night, probably another marginal severe threat but another round of heavy rain with PWATs up to 1.5 inches. But a lingering high CAPE airmass in place makes for an uneasy feeling with incoming convection that may still produce damaging wind if it develops a sfc cold pool. Also can't rule out scattered storm cluster development locally Thu evening as fcst soundings show a very breakable llvl CAP, or if it takes off at a slightly elevated level. Friday and Saturday...for Friday, much will depend on lingering convective debris and storm outflow pools from Thu night. But with the Bermuda High complex setting up shop off the east coast maintaining the warm moist conveyor up the MS RVR Valley, the air mass should recharge to help produce/fuel more scattered storms clusters later Fri afternoon and into Fri night. But better dynamics for more substantial storms appears at this point will lay out acrs the deep southern plains...up into western MO Fri evening. High temps on Fri a challenge depending on amount of debris/cloud cover with several ranges possible. Saturday the more optimum combo of dynamics and instability will take place up the plains to MO RVR Valley again, and locally we may have several dry hours in between isolated to sctrd storms...ongoing above normal temp regime. Sunday through next Tuesday...Assessing the latest run medium range solutions, Sunday through early Memorial Day Monday will look to be a lull period and mainly dry. But then afternoon isolated to sctrd instability showers/storms may pop up Monday afternoon and into the evening. A warm day with highs in the low to mid 80s. Broad troffiness acrs the central and northern plains may bleed some of it's associated precip toward the local area later on Tuesday and into mid next week. ..12.. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z Wednesday AFTERNOON) ISSUED AT 1228 PM CDT Tue May 24 2016 VFR to prevail through this TAF period. Increasingly moist airmass has lead to isolated shower development early this aftn. Do not foresee widespread showers or thunderstorms and only mentioned VCTS for this aftn at KCID/KBRL. Better chance for a cluster of showers and storms to affect the terminals may be late Wednesday morning into the aftn. Uttech && .DVN Watches/Warnings/Advisories... IA...None. IL...None. MO...None. && SYNOPSIS...Uttech SHORT TERM...Uttech LONG TERM...12 AVIATION...Uttech
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 350 PM CDT TUE MAY 24 2016 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-252100- BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON- CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON- HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL- WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON- WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK- 350 PM CDT TUE MAY 24 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST MISSOURI. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED STORMS ARE POSSIBLE THROUGH TONIGHT. NO SEVERE WEATHER IS ANTICIPATED. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE WILL BE SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS THIS WEEK. SEVERE THUNDERSTORMS ARE POSSIBLE ESPECIALLY WEDNESDAY THROUGH FRIDAY AS A SERIES OF LOW PRESSURE SYSTEMS PUSH ACROSS THE MIDWEST. THE MAIN THREATS WILL BE DAMAGING WINDS...LARGE HAIL AND FREQUENT DANGEROUS LIGHTNING...ALONG WITH LOCALLY HEAVY RAINFALL. THIS WEEKEND...THERE WILL BE A CHANCE OF THUNDERSTORMS BUT IT IS TOO EARLY TO DETERMINE THE SEVERE POTENTIAL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. UTTECH/RP KINNEY/HAASE
The Quad Cities radar (KDVN), 109 km away, was scanning. The volume nearest the first event began at 21:30 UTC.
1 thunderstorm wind. Local standard time, as filed.
This was a delayed report. A large tree was downed at a farm near Elm Avenue and 135th street about 2 miles west southwest of Wellman. The tree fell onto a minivan.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2016Every state in 2016This day in weather historyWarnings in Iowa, May 2016
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: 636837.