Alert archive / Michigan / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 33, NWS Gaylord, MI

May 22, 2011Leelanau County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at May 22, 2011, 9:01 PM EDT for Leelanau County, Michigan. It was in force for 44 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 22, 2011, 9:01 PM EDT (01:01 UTC)
Expired: May 22, 2011, 9:45 PM EDT
In force: 44 min
Issued by: NWS Gaylord, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Leelanau County, MI

The radar

The NCL Michigan radar (KAPX), 81 km from the middle of the area, began a volume at 01:02 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

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.0 hours before the alert went out and 195 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 753 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 942 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 325 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

028 
WUUS53 KAPX 230101
SVRAPX
MIC089-230145-
/O.NEW.KAPX.SV.W.0033.110523T0101Z-110523T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
901 PM EDT SUN MAY 22 2011

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LEELANAU COUNTY IN NORTHERN LOWER MICHIGAN...

* UNTIL 945 PM EDT

* AT 853 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 7 MILES NORTHWEST OF LELAND TO GLEN HAVEN TO 7 MILES WEST OF
  EMPIRE...AND MOVING EAST AT 50 MPH. PENNY SIZE HAIL MAY ALSO
  ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  LELAND...BURDICKVILLE...NORTHPORT...LAKE LEELANAU...MAPLE CITY...
  LEELANAU STATE PARK...OMENA...SUTTONS BAY...CEDAR...
  PESHAWBESTOWN...FOUCH...BINGHAM...GREILICKVILLE AND GOOD HARBOR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4492 8605 4491 8600 4498 8594 4494 8587
      4495 8582 4517 8564 4522 8554 4518 8552
      4513 8555 4513 8560 4510 8556 4510 8558
      4504 8555 4500 8561 4492 8559 4487 8564
      4479 8562 4478 8608 4488 8608
TIME...MOT...LOC 0101Z 256DEG 44KT 4510 8576 4490 8593
          4480 8606
WIND...HAIL 60MPH 0.75IN

$$


ARNOTT

2 follow-up statements

572 
WWUS34 KAPX 230121
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
921 PM EDT SUN MAY 22 2011

MIC089-230145-
/O.CON.KAPX.SV.W.0033.000000T0000Z-110523T0145Z/
LEELANAU MI-
921 PM EDT SUN MAY 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR LEELANAU
COUNTY UNTIL 945 PM EDT...

AT 915 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS 
OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 
NORTHPORT TO 5 MILES NORTH OF CEDAR TO LAKE ANN TO HANNAH...MOVING 
EAST AT 40 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING 
WINDS.

LOCATIONS IMPACTED INCLUDE...
  FOUCH...LEELANAU STATE PARK...BINGHAM...OMENA...SUTTONS BAY...
  PESHAWBESTOWN AND GREILICKVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4492 8605 4491 8600 4498 8594 4494 8587
      4495 8582 4517 8564 4522 8554 4518 8552
      4513 8555 4513 8560 4510 8556 4510 8558
      4504 8555 4500 8561 4492 8559 4487 8564
      4479 8562 4478 8608 4488 8608
TIME...MOT...LOC 0120Z 258DEG 36KT 4514 8562 4493 8576
          4477 8577 4456 8556
WIND...HAIL 60MPH 0.75IN

$$


ADAM

153 
WWUS34 KAPX 230148
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
948 PM EDT SUN MAY 22 2011

MIC089-230158-
/O.EXP.KAPX.SV.W.0033.000000T0000Z-110523T0145Z/
LEELANAU MI-
948 PM EDT SUN MAY 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR LEELANAU COUNTY HAS EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.

LAT...LON 4492 8605 4491 8600 4498 8594 4494 8587
      4495 8582 4517 8564 4522 8554 4518 8552
      4513 8555 4513 8560 4510 8556 4510 8558
      4504 8555 4500 8561 4492 8559 4487 8564
      4479 8562 4478 8608 4488 8608
TIME...MOT...LOC 0121Z 258DEG 36KT 4514 8560 4493 8574
          4477 8576 4456 8555
WIND...HAIL <50MPH <.50IN

$$

The office that day

Everything else NWS Gaylord, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 22, 8:55 PM EDT	Special Marine Warning	APX		2 hr
May 22, 9:52 PM EDT	Severe Thunderstorm Warning	APX	Antrim, Charlevoix, Grand Traverse, Kalkaska	38 min
May 22, 10:05 PM EDT	Severe Thunderstorm Warning	APX	Antrim, Charlevoix, Cheboygan, Emmet, Otsego	40 min
May 22, 10:46 PM EDT	Special Marine Warning	APX		59 min
May 22, 11:41 PM EDT	Special Marine Warning	APX		94 min
May 23, 11:02 AM EDT	Small Craft Advisory	APX		17 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2011 Every severe thunderstorm warning in 2011

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.