LakeSignal WX — StormSignal WX

LakeSignal WX

Great Lakes storm signals for snow, wind, water, and warning skies.

Active Alerts Current Winter Threats 7‑Day Travel Safety
Chicago, Illinois Lake Michigan • Great Lakes America/Chicago 41.8781, -87.6298

Updated

Jun 12, 2:39 AM

Active Alerts

Alert

Tornado

None

No tornado watches or warnings in effect.

Alert

Severe Thunderstorm

None

No severe thunderstorm warnings in effect.

Alert

Lakeshore Flood

None

No lakeshore flood advisories at this time.

Alert

High Wind / Gale

None

No high wind or gale warnings in effect.

Alert

Winter Storm

None

No winter storm products issued.

Lake-effect snow radar over Lake Michigan

Lake-Effect Snow Bands

  • Risk Index: 2/5
  • Snow Rates: 0.43 in/hr
  • Wind Fetch: ENE over lake
  • Band Orientation: Sheared narrow bands

Next 6 hours snow-rate trend

Severe Parameters

CAPE & Shear

Stable

SBCAPE

475 J/kg

0–6 km Shear

29 kt

No organized thunder risk.

Tornado Indicators

Low

0–1 km SRH

228 m²/s²

700–500 mb Lapse

6.7 °C/km

TOR Prob

2 %

Environment not supportive of tornado development.

Lake Michigan Marine Wind

Sustained Wind

Wind

21 kt

Gust

32 kt

Wind Direction

82° E

Lake Michigan wave height and direction map

Water Levels & Flooding

Lake Level Anomaly

2.9 in

Slightly High

River Gauge (Chicago)

3.20 ft

None

Rainfall Rate (Nowcast)

0.04 in/hr

None

Shoreline Flood Risk

Chicago shoreline flood risk map

Temperature & Rapid Change

Rapid Change

Temp

35°F

Wind Chill

30°F

Dewpoint Spread

12°F

Pressure Δ3h

-2.6 mb

Temperature and Wind Chill

Pressure Trend

Travel & Visibility Impacts

Road Visibility

  • Band-induced whiteouts near shoreline corridors when sustained onshore winds exceed 20 kt.
  • Blowing snow risk increases with gusts > 30 kt over open areas.

Airports

ORD

Normal

MDW

Normal

Delays reflect wind, visibility, and precipitation impacts.

Hourly — 48 Hours

2 AM

58°F
21 kt

Precip 13%

3 AM

18°F
27 kt

Precip 22%

4 AM

34°F
27 kt

Precip 47%

5 AM

77°F
22 kt

Precip 22%

6 AM

64°F
11 kt

Precip 32%

7 AM

45°F
17 kt

Precip 22%

8 AM

48°F
15 kt

Precip 6%

9 AM

17°F
8 kt

Precip 74%

10 AM

9°F
2 kt

Precip 33%

11 AM

71°F
23 kt

Precip 15%

12 PM

17°F
8 kt

Precip 58%

1 PM

58°F
20 kt

Precip 86%

2 PM

67°F
17 kt

Precip 38%

3 PM

67°F
1 kt

Precip 34%

4 PM

54°F
17 kt

Precip 42%

5 PM

20°F
4 kt

Precip 67%

6 PM

56°F
13 kt

Precip 61%

7 PM

51°F
7 kt

Precip 6%

8 PM

80°F
1 kt

Precip 73%

9 PM

28°F
1 kt

Precip 64%

10 PM

29°F
27 kt

Precip 11%

11 PM

18°F
18 kt

Precip 22%

12 AM

51°F
25 kt

Precip 73%

1 AM

25°F
16 kt

Precip 17%

2 AM

26°F
23 kt

Precip 70%

3 AM

11°F
22 kt

Precip 75%

4 AM

70°F
22 kt

Precip 58%

5 AM

55°F
22 kt

Precip 38%

6 AM

20°F
8 kt

Precip 20%

7 AM

27°F
21 kt

Precip 44%

8 AM

46°F
6 kt

Precip 89%

9 AM

68°F
21 kt

Precip 61%

10 AM

47°F
8 kt

Precip 56%

11 AM

75°F
3 kt

Precip 31%

12 PM

18°F
18 kt

Precip 86%

1 PM

22°F
13 kt

Precip 14%

2 PM

50°F
15 kt

Precip 3%

3 PM

55°F
0 kt

Precip 59%

4 PM

28°F
26 kt

Precip 34%

5 PM

67°F
20 kt

Precip 71%

6 PM

66°F
6 kt

Precip 9%

7 PM

32°F
18 kt

Precip 21%

8 PM

37°F
2 kt

Precip 39%

9 PM

74°F
23 kt

Precip 85%

10 PM

55°F
24 kt

Precip 19%

11 PM

25°F
8 kt

Precip 79%

12 AM

17°F
14 kt

Precip 61%

1 AM

37°F
2 kt

Precip 84%

7‑Day

Fri

66°/47°
24 kt 15%

Sat

41°/26°
25 kt 47%

Sun

48°/33°
16 kt 41%

Mon

37°/16°
17 kt 39%

Tue

35°/18°
19 kt 33%

Wed

59°/40°
22 kt 7%

Thu

30°/11°
26 kt 20%

Safety & Sources

LakeSignal WX is an awareness dashboard for Chicago and the Great Lakes. It does not replace official emergency alerts, local authorities, marine forecasts, or the National Weather Service. Always follow official warnings and instructions.

  • Primary sources: NWS/NWS Marine, NHC/SPC, NOAA Great Lakes, AHPS, FAA.
  • Location: Chicago, Illinois • Lat/Lon: 41.8781, -87.6298 • TZ: America/Chicago.
  • Last updated: Jun 12, 2:39 AM