Alert archive / Michigan / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 10, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Jul 18, 1990, 12:18 PM EDT for Iosco County, Michigan. It was in force for 27 min.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1990, 12:18 PM EDT (16:18 UTC)
- Expired
- Jul 18, 1990, 12:45 PM EDT
- In force
- 27 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
County 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
Detroit, MI (KFNT), launched 12:00Z, 4.3 hours before the alert went out and 176 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
- NaN m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 96 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 181618
SVRAPN
MIC069-181645-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ALPENA MI
1218 PM EDT WED JUL 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 1245 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTHEAST PART OF LOWER MICHIGAN
SOUTHERN IOSCO
AT 1215 PM NATIONAL WEATHER SERVICE RADAR IN ALPENA INDICATED A
SEVERE THUNDERSTORM JUST NORTH OF WHITTMORE...AROUND 58 MILES
SOUTHWEST OF ALPENA.
THIS STORM WAS MOVING TO THE SOUTHEAST AROUND 20 MILES AN HOUR.
IF YOU LIVE IN TOWNS OF WHITTMORE OR NATIONAL CITY...BE PREPARED
FOR DAMAGING WIND...LARGE HAIL...AND VERY HEAVY RAIN.
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, 5 hours 22 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, 5 hours 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, 4 hours 29 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, 3 hours 59 minutes 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.
Special weather statement, Jul 18, 10:56 AM EDT, 1 hour 22 minutes before
MIZ047-048>066-068-181600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ALPENA MI 1055 AM EDT SUN JUL 8 1990 ...THUNDERSTORMS CONTINUE ACROSS PARTS OF NORTHEAST LOWER MICHIGAN... AT 1050 AM...SHOWERS AND THUNDERSTORMS CONTINUED TO MOVE ACROSS PARTS OF NORTHEAST AND NORTHCENTRAL LOWER MICHIGAN. THIS LARGE AREA OF SHOWERS AND THUNDERSTORMS EXTENDED SOUTH FROM ALPENA TO NEAR ALABASTER...AROUND 60 MILES SOUTH OF ALPENA...AND WEST TO NEAR MANISTEE...ALONG THE LAKE MICHIGAN SHORELINE. THUNDERSTORMS WITH HEAVY RAIN WERE OCCURRING JUST NORTH OF HOUGHTON LAKE...AND AROUND 10 MILES SOUTH OF LEWISTON...OR 45 MILES SOUTHWEST OF ALPENA. THESE STORMS WERE MOVING TO THE EAST AROUND 30 MILES@ AN HOUR. CAMPBELL
Special weather statement, Jul 18, 11:38 AM EDT, 40 minutes before
MIZ043>047-063-181600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 1130 AM EDT WED JUL 18 1990 ...THUNDERSHOWERS CONTINUE TO RUMBLE OVER NORTH CENTRAL MICHIGAN... THUNDERSHOWERS...SOME WITH VERY HEAVY RAIN DANGEROUS LIGHTNING AND POSSIBLY SMALL HAIL WERE BUILDING OVER MANISTEE...ON LAKE MICHIGAN AND THEN MOVING EAST TO THE HOUGHTON LAKE AREA BEFORE DISSIPATING. SO...THE PEOPLE UNDER THAT NARROW BAND OF THUNDERSHOWERS CAN EXPECT CONTINUED RAIN UNTIL AT LEAST EARLY AFTERNOON.
The office that day
Everything else NWS Gaylord, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 9:20 AM EDT | Severe Thunderstorm Warning | APX | Oscoda | 55 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.