Alert archive / Michigan / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 34, NWS Gaylord, MI

September 17, 2012Presque Isle County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Sep 17, 2012, 1:48 PM EDT for Presque Isle County, Michigan. It was in force for 28 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Sep 17, 2012, 1:48 PM EDT (17:48 UTC)
Expired: Sep 17, 2012, 2:16 PM EDT
In force: 28 min
Issued by: NWS Gaylord, MI
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Presque Isle County, MI

The radar

The NCL Michigan radar (KAPX), 91 km from the middle of the area, began a volume at 17:52 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.

What was reported inside it

Time	Report	Where	Remark
Sep 17, 1:52 PM EDT	HAIL 1.75	4 Ne Millersburg, MI	PUBLIC REPORTED GOLF BALL SIZED HAIL ON M 68 BETWEEN ROGERS CITY AND MILLERSBURG. TIME ESTIMATED FROM RADAR.
Sep 17, 2:03 PM EDT	HAIL 0.25	Rogers City, MI	MULTIPLE REPORTS RECEIVED FROM VARIOUS OFFICERS AND AN AMULANCE. TIME ESTIMATED FROM RADAR.
Sep 17, 2:03 PM EDT	HAIL 0.7	Rogers City, MI	TIME ESTIMATED FROM RADAR.
Sep 17, 2:10 PM EDT	HAIL 0.25	1 S Rogers City, MI	FELL BETWEEN 145 PM AND ENDED AROUND 210 PM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 5.8 hours before the alert went out and 111 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1469 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

805 
WUUS53 KAPX 171748
SVRAPX
MIC141-171830-
/O.NEW.KAPX.SV.W.0034.120917T1748Z-120917T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
148 PM EDT MON SEP 17 2012

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL PRESQUE ISLE COUNTY IN NORTHERN LOWER MICHIGAN...

* UNTIL 230 PM EDT

* AT 142 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  MILLERSBURG...OR 8 MILES EAST OF ONAWAY...AND MOVING NORTHEAST AT
  35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ROGERS CITY...HAWKS...METZ...P H HOEFT STATE PARK...HAGENSVILLE...
  THOMPSONS HARBOR STATE PARK AND MOLTKE TOWNSHIP.

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 4524 8406 4539 8414 4549 8390 4543 8380
      4542 8371 4537 8363 4536 8359 4537 8354
      4533 8345 4533 8346
TIME...MOT...LOC 1748Z 247DEG 30KT 4538 8400
WIND...HAIL 60MPH 1.50IN

$$

HALBLAUB

2 follow-up statements

742 
WWUS34 KAPX 171801
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
201 PM EDT MON SEP 17 2012

MIC141-171830-
/O.CON.KAPX.SV.W.0034.000000T0000Z-120917T1830Z/
PRESQUE ISLE MI-
201 PM EDT MON SEP 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
PRESQUE ISLE COUNTY UNTIL 230 PM EDT...

AT 156 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING WALNUT SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
ROGERS CITY...MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  ROGERS CITY AND THOMPSONS HARBOR STATE PARK.

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 4532 8394 4543 8400 4549 8390 4543 8380
      4542 8371 4537 8363 4536 8359 4537 8354
      4533 8345
TIME...MOT...LOC 1801Z 251DEG 30KT 4541 8383
WIND...HAIL 60MPH 1.50IN

$$

HALBLAUB

321 
WWUS34 KAPX 171816
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
216 PM EDT MON SEP 17 2012

MIC141-171827-
/O.CAN.KAPX.SV.W.0034.000000T0000Z-120917T1830Z/
PRESQUE ISLE MI-
216 PM EDT MON SEP 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PRESQUE ISLE COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4532 8394 4543 8400 4549 8390 4543 8380
      4542 8371 4537 8363 4536 8359 4537 8354
      4533 8345
TIME...MOT...LOC 1817Z 265DEG 35KT 4544 8363
WIND...HAIL <50MPH <.50IN

$$

HALBLAUB

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 17, 4:32 AM EDT	Small Craft Advisory	APX		48 hr
Sep 17, 9:54 AM EDT	Special Marine Warning	APX		66 min
Sep 17, 10:21 AM EDT	Severe Thunderstorm Warning	APX	Charlevoix	14 min
Sep 17, 11:08 AM EDT	Special Marine Warning	APX		67 min
Sep 17, 1:50 PM EDT	Special Marine Warning	APX		36 min
Sep 17, 4:03 PM EDT	Severe Thunderstorm Warning	APX	Presque Isle	42 min
Sep 17, 4:35 PM EDT	Special Marine Warning	APX		40 min
Sep 17, 5:59 PM EDT	Severe Thunderstorm Warning	APX	Alpena, Montmorency, Presque Isle	58 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.