Alert archive / Michigan / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 9, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 18, 1990, 9:20 AM EDT for Oscoda County, Michigan. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1990, 9:20 AM EDT (13:20 UTC)
- Expired
- Jul 18, 1990, 10:15 AM EDT
- In force
- 55 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, 1.3 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
- 290 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 665 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KAPN 181323
SVRAPN
MIC135-181415-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING ...CORRECTED FOR DATE
NATIONAL WEATHER SERVICE ALPENA MI
920 AM EDT WED JUL 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1015 AM FOR PEOPLE IN THE FOLLOWING
COUNTIES...
IN THE NORTHEAST PART OF LOWER MICHIGAN
... OSCODA
AT 918 AM NATIONAL WEATHER SERVICE RADAR IN ALPENA INDICATED A
SEVERE THUNDERSTORM AROUND 10 MILES NORTHWEST OF GRAYLING...AROUND
60 MILES SOUTHWEST OF ALPENA.
THIS STORM WAS MOVING TO THE EAST AROUND 30 MILES AN HOUR...AND
WILL BE MOVING INTO OSCODA COUNTY BY 935 THIS MORNING.
IF YOU LIVE IN THE TOWN OF RED OAK...COMMINS...OR MIO...BE PREPARED FOR
STRONG WINDS...HAIL...AND HEAVY RAIN.
REMEMBER...SEVERE THUNDERSTORMS CAN AND SOMETIMES DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT.
CAMPBELLWhat 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, 6:56 AM EDT, 2 hours 24 minutes before
MIZ043>047-063-181200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 650 AM EDT WED JUL 18 1990 ...THUNDERSHOWERS NEAR GRAYLING AND HOUGHTON LAKE... THUNDERSHOWERS...SOME WITH VERY HEAVY RAIN AND DANGEROUS LIGHTNING... WILL BE NEAR THE GRAYLING AND HOUGHTON LAKE AREAS FROM 700 AM EDT UNTIL 900 AM EDT. AT 650 AM EDT...A LINE OF SHOWERS AND THUNDERSHOWERS EXTENDED FROM 40 MILES NORTHEAST OF HOUGHTON LAKE TO NEARP MANISTEE. THE STORMS WERE MOVING EAST AT ABOUT 30 MILES AN HOUR WHILE THE LINE WAS SAGGING SOUTH.
Special weather statement, Jul 18, 7:18 AM EDT, 2 hours 2 minutes before
MIZ043>047-063-181300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 715 AM EDT WED JUL 18 1990 ...THUNDERSHOWERS NEAR HOUGHTON LAKE... THUNDERSHOWERS...SOME WITH VERY HEAVY RAIN DANGEROUS LIGHTNING AND MARBLE SIZE HAIL WILL BE IN THE WEST HALF OF ROSCOMMON COUNTY... NEAR HOUGHTON LAKE UNTIL 900 AM EDT. AT 710 AM EDT...A LINE OF SHOWERS AND THUNDERSHOWERS EXTENDED FROM NEAR HOUGHTON LAKE TO NEAR MANISTEE. ThHE STORMS WERE MOVING EAST AT ABOUT 30 MILES AN HOUR WHILE THE LINE WAS SAGGING SOUTH. MARBLE SIZE HAIL WAS REPORTED WITH THESE STORMS NEAR CADILLAC AT 700 AM EDT.
Special weather statement, Jul 18, 7:49 AM EDT, 1 hour 31 minutes before
MIZ043>047-063-181300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 745 AM EDT WED JUL 18 1990 ...THUNDERSHOWERS NEAR HOUGHTON LAKE... THUNDERSHOWERS...SOME WITH VERY HEAVY RAIN} DANGEROUS LIGHTNING AND MARBLE SIZE HAIL WILL BE IN THE WEST HALF OF ROSCOMMON COUNTY... NEAR HOUGHTON LAKE UNTIL 900 AM EDT. GOLFERS...STAY OFF THE COURSE UNTIL THE SUN COMES OUT.
Special weather statement, Jul 18, 8:19 AM EDT, 1 hour 1 minute before
MIZ043>047-063-181300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 815 AM EDT WED JUL 18 1990 ...THUNDERSHOWERS CONTINUE TO RUMBLE OVER NORTHWEST MICHIGAN... THUNDERSHOWERS...SOME WITH VERY HEAVY RAIN DANGEROUS LIGHTNING AND POSSIBLY SMALL HAIL WERE OVER NORTHWEST AND CENTRAL LOWER MICHIGAN BETWEEN HOUGHTON LAKE TRAVERSE CITY AND CADILLAC. THE AREA OF THUNDERSHOWERS HAS EXPANDED...AT 815 AM EDT...AND YOU MAY EXPECT THE STORMS TO LAST UNTIL AT LEAST 1000 AM EDT.
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 12:18 PM EDT | Severe Thunderstorm Warning | APX | Iosco | 27 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 1990Every severe thunderstorm warning in 1990
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.