Alert archive / Michigan / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 13, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Oct 14, 1989, 12:39 PM EDT for Alcona County, Michigan. It was in force for 51 min.
The area
The counties it named.
The facts
- Issued
- Oct 14, 1989, 12:39 PM EDT (16:39 UTC)
- Expired
- Oct 14, 1989, 1:30 PM EDT
- In force
- 51 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
County Alcona 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, 4.7 hours before the alert went out and 209 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
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KAPN 141639
SVRAPN
MIC001-141745-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE ALPENA MI
1239 PM EDT SAT OCT 14 1989
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 145 PM EDT FOR
PEOPLE IN THE FOLLOWING COUNTY
IN THE NORTHEAST PART OF LOWER MICHIGAN
NORTHERN ALCONA
...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTY JUST MENTIONED
AT 1230 PM EDT A SEVERE THUNDERSTORM WAS LOCATED OVER NORTHCENTRAL
ALCONA COUNTY...15 MILES SOUTH SOUTHWEST OF THE CITY OF ALPENA.
THIS STORM WAS MOVING TO THE EAST AT 50 MILES AN HOUR AND HAS
PRODUCED SEVERE WEATHER.
IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORECED
SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY
RAIN AND LIGHTNING.
BOATERS ALONG THE LAKE HURON SHORELINE FROM OSSINEKE SOUTH TO
HARRISVILLE SHOULD SEEK SAFE HARBOR IMMEDIATELY.
THE SEVERE THUNDERSTORM WARNINGS FOR NORTHEAST OSCODA COUNTY AND FOR
THE SOUTHERN PORTION OF ALCONA AND NORTH IOSCO COUNTIES IS CANCELLED.
KAMINSKEWhat 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, 2 hours 3 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, 1 hour 17 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, 11:56 AM EDT | Severe Thunderstorm Warning | APX | Alcona, Iosco | 34 min |
| Oct 14, 12:16 PM EDT | Severe Thunderstorm Warning | APX | Alcona, Oscoda | 59 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.