Alert archive / Michigan / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 17, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Oct 15, 1989, 11:25 AM EDT for Oscoda County, Michigan. It was in force for 35 min.
The area
The counties it named.
The facts
- Issued
- Oct 15, 1989, 11:25 AM EDT (15:25 UTC)
- Expired
- Oct 15, 1989, 12:00 PM EDT
- In force
- 35 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
County Oscoda 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, 3.4 hours before the alert went out and 199 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
- 1213 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 207 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 15, 9:43 AM EDT, 1 hour 42 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 940 AM EDT SUN OCT 15 1989 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 200 PM EDT... AT 940 AM EDT...RADAR WAS INDICATING STRONG THUNDERSTORMS MOVING INTO NORTHWEST LOWER MICHIGAN NEAR TRAVERSE CITY. THESE STORMS WERE MOVING EAST AT ABOUT 40 TO 45 MILES AN HOUR AND WILL MOVING INTO OTSEGO AND CRAWFORD COUNTIES BY 1100 AM EDT. VERY HEAVY RAIN...STRONG GUSTY WIND...LARGE HAIL AND DANGEROUS LIGHTNING ARE LIKELY WITH THESE THUNDERSTORMS. LLH
Special weather statement, Oct 15, 10:20 AM EDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 1015 AM EDT SUN OCT 15 1989 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 200 PM EDT... AT 1015 AM EDT...RADAR WAS INDICATING A STRONG THUNDERSTORM OVER KALKASKA COUNTY...ABOUT 40 MILES NORTHWEST OF HOUGHTON LAKE. THIS THUNDERSTORM WILL BE MOVING INTO NORTH CRAWFORD...SOUTH OTSEGO COUNTY BY 1030 AM EDT. VERY HEAVY RAIN...STRONG GUSTY WIND...LARGE HAIL AND DANGEROUS LIGHTNING ARE LIKELY WITH THESE THUNDERSTORMS. LLH
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 14, 11:40 PM EDT | Severe Thunderstorm Warning | APX | Oscoda | 30 min |
| Oct 15, 10:13 AM EDT | Severe Thunderstorm Warning | APX | Benzie, Grand Traverse, Leelanau | 62 min |
| Oct 15, 10:43 AM EDT | Tornado Warning | APX | Grand Traverse, Kalkaska, Missaukee | 32 min |
| Oct 15, 11:06 AM EDT | Severe Thunderstorm Warning | APX | Antrim, Grand Traverse, Kalkaska | 69 min |
| Oct 15, 12:02 PM EDT | Severe Thunderstorm Warning | APX | Oscoda | 28 min |
| Oct 15, 12:09 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco | 51 min |
| Oct 15, 12:45 PM EDT | Severe Thunderstorm Warning | APX | Oscoda | 45 min |
| Oct 15, 1:02 PM EDT | Severe Thunderstorm Warning | APX | Alcona | 58 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.