Alert archive / Michigan / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 13, NWS Marquette, MI
NWS Marquette, MI issued this severe thunderstorm warning at Jul 18, 1986, 1:05 PM EDT for Schoolcraft County, Michigan. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1986, 1:05 PM EDT (17:05 UTC)
- Expired
- Jul 18, 1986, 2:00 PM EDT
- In force
- 55 min
- Issued by
- NWS Marquette, MI
- Area
- Whole counties
County Schoolcraft 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, 5.1 hours before the alert went out and 152 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
- 412 J/kg
- Mixed-layer CIN
- -262 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMQT 181705 SVRMQT MIC041-153-103-003-181800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MARQUETTE MI 105 PM EDT FRI JUL 18 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 200 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF NORTH CENTRAL UPPER MICHIGAN...NORTHERN DELTA...CENTRAL SOUTH SCHOOLCRAFT...SOUTHERN MARQUETTE AND SOUTHERN ALGER AT PM EDT NATIONAL SERVICE RADAR INDICATED A LINE OF SEVERE THUNDESTORMS FROM PALMER TO TRENARY TO SENEY IN UPPER MICHIGAN MOVING TOWARD THE SOUTHEAST AT 40 MILES AN HOUR. IF YOU ARE IN THE PATH OF THIS STORM..GET TO A REINFORCED BUILDING. SEVERE THUNDERSTORMS PRODUCE STRONG DAMAGING WIND..LARGE HAIL..VERY HEAVY RAIN..AND FREQUENT LIGHTNING. THEY OCCASIONALLY DO SPAWN A TORNADO WITH LITTLE OR NO ADVANCE WARNING..SO BE ON THE LOOKOUT. REPORT ALL SEVERE WEATHER SIGHTINGS TO YOUR NEAREST LAW ENFORCEMENT AGENCY AND ASK THEM TO RELAY IT TO THE NATIONAL WEATHER SERVICE. BM
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, Jul 18, 12:38 PM EDT, 27 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MARQUETTE MI 1235 PM EDT FRI JUL 18 1986 AT 1229 PM EDT A 10 MILE WIDE LINE OF THUNDERSTORMS WAS FROM JUST SOUTH OF PALMER TO EAST OF TRENARY TO WHITEFISH BAY IN UPPER MICHIGAN. THIS LINE OF THUNDERSTORMS WAS MOVING TO THE SOUTHEAST AT 40 MILES AN HOUR AND WILL BE ACCOMPANIED BY GUSTY WINDS..HEAVY RAINS AND POSSIBLE SMALL HAIL PERSONS IN SOUTHERN MARQUETTE..SOUTHERN ALGER..NORTHERN DELTA.. AND THE SOUTH HALF OF SCHOOLCRAFT COUNTIES SHOULD BE ON THE ALERT FOR THREATENING WEATHER AND PASS ANY SEVERE WEATHER REPORTS TO THE NEAREST LAW ENFORCENMENT AGENCY. BM
The office that day
Everything else NWS Marquette, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 1:05 PM EDT | Severe Thunderstorm Warning | MQT | Alger, Delta, Marquette | 55 min |
| Jul 18, 2:05 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Marquette | 55 min |
| Jul 18, 2:59 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Marquette | 61 min |
| Jul 18, 3:45 PM EDT | Flash Flood Warning | MQT | Alger, Delta, Marquette | 6 hr |
| Jul 18, 4:04 PM EDT | Severe Thunderstorm Warning | MQT | Delta, Menominee | 56 min |
| Jul 18, 4:59 PM EDT | Severe Thunderstorm Warning | MQT | Dickinson, Menominee | 61 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1986Every severe thunderstorm warning in 1986
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.