Alert archive / Michigan / Special Weather Statements in 2021

Special Weather Statement, NWS Gaylord, MI

June 29, 2021Iosco County, Michigan

NWS Gaylord, MI issued this special weather statement at Jun 29, 2021, 4:18 PM EDT for Iosco County, Michigan. It was in force for 27 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
Jun 29, 2021, 4:18 PM EDT (20:18 UTC)
Expired
Jun 29, 2021, 4:45 PM EDT
In force
27 min
Issued by
NWS Gaylord, MI

County Iosco County, MI

The radar

The NCL Michigan radar (KAPX), 118 km from the middle of the area, began a volume at 20:19 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

Alpena, MI (KAPX), launched 12:00Z, 8.3 hours before the alert went out and 106 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-pSkew-T log-p diagram, Alpena, MI at 12:00Z on 2021-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 12:00Z on 2021-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
50 J/kg
Mixed-layer CIN
-55 J/kg
Mixed-layer LCL
718 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

627 
WWUS83 KAPX 292018
SPSAPX

Special Weather Statement
National Weather Service Gaylord MI
418 PM EDT Tue Jun 29 2021

MIZ036-292045-
Iosco-
418 PM EDT Tue Jun 29 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN IOSCO COUNTY...

At 418 PM EDT, a strong thunderstorm was located near Plainfield
Township, or 8 miles northwest of East Tawas, moving east at 40 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

This storm will be near...
  Oscoda, Au Sable and Wurtsmith Airfield around 435 PM EDT.

Other locations impacted by this storm include Wilber and Sid Town.

If outdoors, consider seeking shelter inside a building.

LAT...LON 4432 8329 4431 8330 4433 8365 4445 8368
      4451 8342 4451 8332 4454 8331 4455 8327
TIME...MOT...LOC 2018Z 262DEG 35KT 4440 8357 

$$

JZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 2:55 PM EDTSpecial Weather StatementAPXOscoda35 min
Jun 29, 3:10 PM EDTSpecial Weather StatementAPXAlpena50 min
Jun 29, 3:40 PM EDTSpecial Marine WarningAPX95 min
Jun 29, 3:53 PM EDTSpecial Weather StatementAPXAlcona37 min

Nearby

Special Weather Statements in Michigan, 2021Every special weather statement in 2021

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.