Alert archive / Michigan / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 11, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Oct 14, 1989, 11:56 AM EDT for Alcona County, Iosco County, Michigan. It was in force for 34 min.
The area
The counties it named.
The facts
- Issued
- Oct 14, 1989, 11:56 AM EDT (15:56 UTC)
- Expired
- Oct 14, 1989, 12:30 PM EDT
- In force
- 34 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
Counties Alcona County, MI, Iosco County, MI
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Sault Ste Marie, MI (KSSM), launched 12:00Z, 3.9 hours before the alert went out and 229 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2253 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 275 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Oct 14, 10:36 AM EDT, 1 hour 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 1035 AM EDT SAT OCT 14 1989 ...STRONG THUNDERSTORM MOVING INTO CRAWFORD COUNTY... AT 1030 AM EDT RADAR INDICATED A STRONG THUNDERSTORM MOVING INTO CRAWFORD COUNTY. THE STORM WAS LOCATED 20 MILES NORTHWEST OF HOUGHTON LAKE OR 10 MILES NORTHWEST OF GRAYLING MOVING EAST AT 20 MILES AN HOUR. HEAVY RAIN...GUSTY WINDS AND DANGEROUS LIGHTNING ARE LIKELY WITH THE PASSAGE OF TH+IS THUNDERSTORM.
Special weather statement, Oct 14, 11:22 AM EDT, 34 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 1120 AM EDT SAT OCT 14 1989 ...STRONG THUNDERSTORM MOVING THROUGH OTSEGO COUNTY... AT 1115 AM EDT RADAR INDICATED A STRONG THUNDERSTORM MOVING THROUGH OTSEGO COUNTY. THE STORM WAS LOCATED 30 MILES NORTHWEST OF HOUGHTON LAKE OR OR JUST WEST OF OTSEGO LAKE MOVING EAST AT 20 MILES AN HOUR. HEAVY RAIN...GUSTY WINDS AND DANGEROUS LIGHTNING AND HAIL ARE LIKELY WITH THIS THUNDERSTORM.
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 12:16 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Oscoda | 59 min |
| Oct 14, 12:39 PM EDT | Severe Thunderstorm Warning | APX | Alcona | 51 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1989Every severe thunderstorm warning in 1989
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.