Alert archive / Illinois / Special Weather Statements in 2018
Special Weather Statement, NWS Lincoln, IL
NWS Lincoln, IL issued this special weather statement at May 14, 2018, 5:39 PM CDT for Stark County, Illinois. It was in force for 51 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
- May 14, 2018, 5:39 PM CDT (22:39 UTC)
- Expired
- May 14, 2018, 6:30 PM CDT
- In force
- 51 min
- Issued by
- NWS Lincoln, IL
County Stark County, IL
The radar
The Lincoln radar (KILX), 107 km from the middle of the area, began a volume at 22:41 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
Lincoln, IL (KILX), launched 12:00Z, 10.7 hours before the alert went out and 129 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
- 962 J/kg
- Mixed-layer CIN
- -160 J/kg
- Mixed-layer LCL
- 1462 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 86 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 Lincoln, IL wrote its last area forecast discussion before this special weather statement went out at May 14, 3:04 PM CDT, 2 hours 35 minutes earlier.
Area forecast discussion, May 14, 3:04 PM CDT, 2 hours 35 minutes before
Area Forecast Discussion National Weather Service Lincoln IL 304 PM CDT Mon May 14 2018 .SHORT TERM...(This evening through Tuesday) ISSUED AT 303 PM CDT Mon May 14 2018 Severe weather potential will be the primary concern in the short term. CAMs are pointing toward two waves of storms that will affect central IL over the next 12-14 hours. The first wave will have a higher potential of severe storms, feeding off of afternoon instability in the ballpark of 2200-2300 J/kg MLCAPE. There will a small layer of CIN of 100 J/kg to overcome around 850 mb, but mid layer lapse rates of 7-8C will support rapid upscale growth of convective elements between 21z-23z. A line of strong to severe storms will progress from NW to SE between 4 pm and 10 pm, with a break in the storms behind the line for several hours. Hail and wind will be the primary hazards. Tornado potential is low. The CAMs are pointing toward the second wave reaching Fulton/Knox county from the west around 06z/1am and affecting mainly areas N of I-72 the rest of the night. Instability will be diminished to 1500 J/kg, but we can't rule out some hail approaching severe levels (1"). A more stable near-surface layer will limit downburst wind potential, but a few strong gusts could accompany any hail cores as they reach the ground. Cloud cover will be variable tonight, but in general, the position of the front should remain generally north of our forecast area, helping to keep low temps on the warm side, in the 60s. Convection could be lingering into Tuesday morning in our N counties, per the latest RAP, but the NAMnest and GFS1hr are indicating a more limited coverage of showers/storms, if any at all linger that late. Will keep low chance PoPs in the north and evolve them eastward and southward through the day. There should be sizable breaks in the rain for most locations. High temps will be limited to the mid to upper 70s N of Peoria, due to frontal position, with 80s south of the front. && .LONG TERM...(Tuesday night through Monday) ISSUED AT 303 PM CDT Mon May 14 2018 Tuesday night will see storm chances mainly south of I-72, or along and south of the stationary front. Precip chances will diminish from NW to SE overnight as a weak surface low progresses along the front and eventually departs to the SE. The lingering proximity of the stationary front just southeast of Illinois will keep slight chance and low chance PoPs in our southeast counties Wed through Friday. Temperatures will be slightly cooler for that period as the main boundary remains south, but high temps will gradually creep warmer each day through the 80s. The front will lift back to the north as a warm front on Saturday, bringing our warmest day of the extended forecast. Precip chances will expand to across the remainder of central IL, and continue through Sunday before coming to an end by early Monday morning. A minor cool down is projected for Monday as the front drifts back south of our forecast area. && .AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon) Issued at 1259 PM CDT Mon May 14 2018 Still on track for a line of storms to progress from NW to SE across central Illinois from late afternoon through this evening. Cloud heights ahead of the line should remain VFR, with MVFR conditions likely as the rain and storms move through. Brief IFR vis and cigs could occur with the stronger storms, primarily this evening. A break in the rain is indicated behind the initial line, but additional storm development will remain possible overnight as the frontal boundary remains active until near sunrise tomorrow. Winds will be variable at times, but should prevail from the southeast to start the TAF period, then shift from the SW as storms approach. Winds later tonight should trend from the west. Frontal placement will play a large role in where prevailing winds settle out later tonight, but west seems most reasonable at this point. && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...Shimon LONG TERM...Shimon AVIATION...Shimon
Hazardous weather outlook, May 14, 3:08 PM CDT, 2 hours 31 minutes before
Hazardous Weather Outlook National Weather Service Lincoln IL 308 PM CDT Mon May 14 2018 ILZ027>031-036>038-040>045-047>054-061-151100- Cass-Champaign-Christian-De Witt-Fulton-Knox-Logan-Macon-Marshall- Mason-McLean-Menard-Morgan-Moultrie-Peoria-Piatt-Sangamon- Schuyler-Scott-Shelby-Stark-Tazewell-Woodford- 308 PM CDT Mon May 14 2018 This Hazardous Weather Outlook is for portions of central Illinois and east central Illinois, as far east as I-57. .DAY ONE...TONIGHT... Strong to severe thunderstorms will move across central Illinois through this evening. Damaging winds will be the primary concern, although some storms may also produce large hail. Additional storms may move in after midnight. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... There will be a daily chance for thunderstorms Tuesday through Sunday. The chances of severe weather is unknown at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will be required this evening. In areas west of I-55, this is most likely through 9 pm. East of I-55, activation is likely between 6 pm and 10 pm. ILZ046-055>057-062-063-066>068-071>073-151100- Clark-Clay-Coles-Crawford-Cumberland-Douglas-Edgar-Effingham- Jasper-Lawrence-Richland-Vermilion- 308 PM CDT Mon May 14 2018 This Hazardous Weather Outlook is for portions of east central Illinois and southeast Illinois, east of I-57. .DAY ONE...TONIGHT... Thunderstorms are expected to move into the area after sunset. Some of these may contain stronger wind gusts, but the main severe weather threat will be further west. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... There will be a daily chance for thunderstorms Tuesday through Sunday. The chances of severe weather is unknown at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required after sunset. Geelhart
In the hours before
Special weather statement, May 14, 5:39 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Lincoln IL
539 PM CDT MON MAY 14 2018
ILZ028-030-142330-
Marshall-Stark-
539 PM CDT MON MAY 14 2018
...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MARSHALL AND
SOUTHEASTERN STARK COUNTIES UNTIL 630 PM CDT...
At 538 PM CDT, Doppler radar was tracking a strong thunderstorm over
Camp Grove, or 12 miles west of Lacon, moving northeast at 40 mph.
Dime size hail and wind gusts up to 50 mph will be possible with this
storm.
Locations impacted include...
Lacon, Henry, Wyoming, Toulon, Sparland, Castleton, Camp Grove, Lake
Wildwood and Marshall-Putnam County Fairgrounds.
This includes Interstate 39 near mile marker 40.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
A severe thunderstorm watch remains in effect until 1000 PM CDT for
central and north central Illinois.
LAT...LON 4116 8964 4115 8964 4115 8933 4112 8933
4111 8936 4110 8935 4110 8905 4109 8905
4099 8966 4107 8992
TIME...MOT...LOC 2238Z 235DEG 37KT 4108 8964
07The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 4:46 PM CDT | Severe Thunderstorm Warning | ILX | Stark | 15 min |
| May 14, 6:10 PM CDT | Special Weather Statement | ILX | Cass | 50 min |
| May 14, 6:28 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Fulton, Mason, Morgan, Schuyler | 33 min |
| May 14, 6:54 PM CDT | Severe Thunderstorm Warning | ILX | McLean | 51 min |
Nearby
Special Weather Statements in Illinois, 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.