Alert archive / Michigan / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 3, NWS Gaylord, MI
NWS Gaylord, MI issued this severe thunderstorm warning at Mar 27, 1991, 7:21 PM EST for Alcona County, Michigan. It was in force for 54 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Mar 27, 1991, 7:21 PM EST (00:21 UTC)
- Expired
- Mar 27, 1991, 8:15 PM EST
- In force
- 54 min
- Issued by
- NWS Gaylord, MI
- Area
- Whole counties
County Alcona County, MI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 27, 8:05 PM EST | Thunderstorm Wind 62 | Alcona, MI |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Detroit, MI (KFNT), launched 00:00Z, 0.4 hours before the alert went out and 222 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
- 1201 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 971 m above ground
- 0-6 km bulk shear
- 91 kt
- 0-1 km storm-relative helicity
- 378 m²/s²
- 0-3 km storm-relative helicity
- 434 m²/s²
- Significant tornado parameter
- 3.4
- Supercell composite
- 12.5
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, Mar 27, 4:55 PM EST, 2 hours 26 minutes before
MIZ065-064-066-048-067-068-272300- SPECIAL WEATHER STATEMENT AND SHORT-RANGE WEATHER FORECAST NATIONAL WEATHER SERVICE ALPENA MI 455 PM EST WED MAR 27 1991 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF NORTHEAST LOWER MICHIGAN UNTIL MIDNIGHT... A TORNADO WATCH HAS BEEN ISSUED FOR MUCH OF LOWER MICHIGAN THIS AFTERNOON AND EVENING. IN NORTHEAST LOWER MICHIGAN...THE FOLLOWING COUNTIES ARE INCLUDED IN THE WATCH: MONTMORENCY...ALPENA...OSCODA... ALCONA AND IOSCO. AT 450 PM...NATIONAL WEATHER SERVICE RADAR INDICATED SHOWERS AND THUNDERSTORMS DEVELOPING OVER WEST-CENTRAL LOWER MICHIGAN...JUST SOUTH OF TRAVERSE CITY. OTHER SHOWERS AND THUNDERSTORMS WERE OVER EXTREME NORTHERN AND NORTHWEST LOWER MICHIGAN FROM HILLMAN...20 MILES WEST OF ALPENA...WEST TO NEAR PETOSKEY. THE SHOWERS AND THUNDERSTORMS WERE MOVING TO THE NORTHEAST AROUND 45 MILES AN HOUR. SHOWERS AND THUNDERSTORMS WILL BE MOVING OVER ROGERS CITY AND MILLERSBURG BY 515 PM. A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF TORNADOES AND SEVERE THUNDERSTORMS. IF YOU ARE IN OR NEAR THE WATCH AREA...PREPARE YOURSELF FOR POSSIBLE TORNADOES...AND SEVERE THUNDERSTORMS WITH LARGE HAIL. CAMPBELL
Special weather statement, Mar 27, 4:57 PM EST, 2 hours 24 minutes before
MIC035-039-051-129-137-143-272245- SPECIAL WEATHER STATEMENT AND SHORT RANGE WEATHER FORECAST...COR TO NATIONAL WEATHER SERVICE HOUGHTON LAKE MI HEADER... 438 PM EST WED MAR 27 1991 ...TORNADO WATCH IN EFFECT FOR NORTH CENTRAL LOWER MICHIGAN UNTIL MIDNIGHT... A TORNADO WATCH IS IN EFFECT FOR MOST OF THE LOWER PENINSULA OF MICHIGAN...INCLUDING ALL OF NORTH CENTRAL LOWER MICHIGAN...UNTIL MIDNIGHT TONIGHT. COUNTIES INCLUDED IN NORTH CENTRAL LOWER MICHIGAN ARE CLARE...GLADWIN...ROSCOMMON...OGEMAW...CRAWFORD AND OTSEGO. AT 430 PM EST RADAR INDICATED A RAPIDLY DEVELOPING AREA OF THUNDERSTORMS...SOME POSSIBLY PRODUCING STRONG DAMAGING WINDS... HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. THESE STORMS WERE MOVING TO THE NORTHEAST AT ABOUT 45 MPH. PERSONS IN NORTH CENTRAL LOWER MICHIGAN ARE STRONGLY URGED TO KEEP AN EYE ON WEATHER CONDITIONS AND BE PREPARED TO MOVE TO A PLACE OF SAFETY SHOULD SEVERE WEATHER DEVELOP FROM THESE STORMS AS THEY PASS OVERHEAD. REMEMBER...A TORNADO WATCH MEANS THAT CONDITIONS ARE RIPE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS AND TORNADOS. THESE STORMS ARE DEVELOPING AND MOVING RAPIDLY AND LITTLE OR NO ADVANCE WARNING MAY OCCUR BEFORE A TORNADO FORMS. AGAIN...IF YOU ARE IN THE WATCH AREA BE PREPARED TO MOVE TO A PLACE OF SAFETY IMMEDIATELY SHOULD SEVERE WEATHER THREATEN. KEITH NNNN
Special weather statement, Mar 27, 5:29 PM EST, 1 hour 52 minutes before
MIZ065-064-066-048-067-068-280000- SPECIAL WEATHER STATEMENT AND SHORT-RANGE WEATHER FORECAST NATIONAL WEATHER SERVICE ALPENA MI 530 PM EST WED MAR 27 1991 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF NORTHEAST LOWER MICHIGAN UNTIL MIDNIGHT... A TORNADO WATCH CONTINUES IN EFFECT FOR MUCH OF LOWER MICHIGAN THIS EVENING. IN NORTHEAST LOWER MICHIGAN...THE FOLLOWING COUNTIES ARE INCLUDED IN THE WATCH: MONTMORENCY...ALPENA...OSCODA...ALCONA...AND IOSCO. AT 520 PM...NATIONAL WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS RAPIDLY DEVELOPING OVER WEST-CENTRAL LOWER MICHIGAN... SOUTH FROM PETOSKEY...TO NEAR TRAVERSE CITY. ANOTHER STRONG THUNDERSTORM WAS OVER EXTREME NORTHERN LOWER MICHIGAN...JUST SOUTH OF CHEBOYGAN. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT AROUND 50 MILES AN HOUR. OTHER SCATTERED SHOWERS AND THUNDERSTORMS WERE MOVING INTO NORTHEAST LOWER MICHIGAN FROM THE SOUTH. THESE THUNDERSTORMS WERE LOCATED NEAR HALE...AROUND 50 MILES SOUTH OF ALPENA...AND NEAR ROSE CITY...30 MILES EAST OF HOUGHTON LAKE. THESE SHOWERS AND THUNDERSTORMS WERE ALSO MOVING TO THE NORTHEAST AT 50 MILES AN HOUR...AND WILL BE MOVING OVER MIO...GLENNIE...AND GREENBUSH...BY 6 P2M. A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF TORNADOES AND SEVERE THUNDERSTORMS. IF YOU ARE IN OR NEAR THE WATCH AREA...PREPARE YOURSELF FOR POSSIBLE TORNADOES...AND SEVERE THUNDERSTORMS WITH LARGE HAIL. CAMPBELL
Special weather statement, Mar 27, 5:55 PM EST, 1 hour 26 minutes before
MIZ065-064-066-048-067-068-280030- SPECIAL WEATHER STATEMENT AND SHORT-RANGE WEATHER FORECAST NATIONAL WEATHER SERVICE ALPENA MI 600 PM EST WED MAR 27 1991 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF NORTHEAST LOWER MICHIGAN UNTIL MIDNIGHT... A TORNADO WATCH CONTINUES IN EFFECT FOR MUCH OF LOWER MICHIGAN THIS EVENING. IN NORTHEAST LOWER MICHIGAN...THE FOLLOWING COUNTIES ARE INCLUDED IN THE WATCH AREA: MONTMORENCY...ALPENA...OSCODA...ALCONA... AND IOSCO. AT 600 PM...STRONG THUNDERSTORMS CONTINUED TO MOVE CLOSER TO NORTHEAST LOWER MICHIGAN. STRONG THUNDERSTORMS EXTENDED SOUTHWEST FROM 10 MILES EAST OF CHEBOYGAN...TO NEAR TRAVERSE CITY...WHERE SOME HAIL WAS REPORTED DURING THE PAST HOUR. THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 60 MILES AN HOUR. OTHER SHOWERS AND THUNDERSTORMS WERE OCCURRING NORTH OF OSCODA... 40 MILES SOUTH OF ALPENA...AND NEAR FAIRVIEW...AROUND 35 MILES SOUTHWEST OF ALPENA. THESE SHOWERS AND THUNDERSTORMS WERE ALSO MOVING TO THE NORTHEAST AT 60 MILES AN HOUR...AND WILL BE MOVING OVER ALPENA AND HUBBARD LAKE BY 615 PM. A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF TORNADOES AND SEVERE THUNDERSTORMS. IF YOU ARE IN ;OR NEAR THE WATCH AREA...PREPARE YOURSELF FOR POSSIBLE TORNADOES...AND SEVERE THUNDERSTORMS WITH LARGE HAIL. CAMPBELL
Special weather statement, Mar 27, 6:08 PM EST, 1 hour 13 minutes before
MIC035-039-051-129-137-143-280000- SPECIAL WEATHER STATEMENT AND SHORT RANGE WEATHER FORECAST NATIONAL WEATHER SERVICE HOUGHTON LAKE MI 601 PM EST WED MAR 27 1991 ...TORNADO WATCH IN EFFECT FOR NORTH CENTRAL LOWER MICHIGAN UNTIL MIDNIGHT... A TORNADO WATCH IS IN EFFECT FOR MOST OF THE LOWER PENINSULA OF MICHIGAN...INCLUDING ALL OF NORTH CENTRAL LOWER MICHIGAN...UNTIL MIDNIGHT TONIGHT. COUNTIES INCLUDED IN NORTH CENTRAL LOWER MICHIGAN ARE CLARE...GLADWIN...ROSCOMMON...OGEMAW...CRAWFORD AND OTSEGO. AT 600 PM EST RADAR INDICATED A LINE OF FAST MOVING THUNDERSTORMS FROM TRAVERSE CITY TO JUST WEST OF GRAND RAPIDS. THESE STORMS PRODUCED 70 MPH WINDS AND LARGE HAIL AS WELL AS DANGEROUS LIGHTNING AS THEY MOVED THROUGH WESTERN LOWER MICHIGAN. THE STORMS ARE MOVING NORTHEAST AT 45 TO 50 MPH. PERSONS IN CLARE AND ROSCOMMON COUNTIES SHOULD BE ON THE LOOKOUT FOR THESE STORMS AS THEY WILL MOVE THROUGH THESE COUNTIES BETWEEN 630 AND 700 PM EST. IF YOU SEE SEVERE WEATHER APPROACHING TAKE SHELTER IMMEDIATELY. SECONDS CAN SAVE LIVES. REMEMBER...A TORNADO WATCH MEANS THAT CONDITIONS ARE RIPE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS AND TORNADOES. LITTLE OR NO ADVANCE WARNING MAY OCCUR BEFORE A TORNADO FORMS. FOR THE LATEST INFORMATION...STATEMENTS AND POSSIBLE WARNINGS ON THIS DANGEROUS WEATHER SITUATION PLEASE STAY TUNED TO YOUR LOCAL TELEVISION ORR RADIO STATION. KEITH
Special weather statement, Mar 27, 6:21 PM EST, 1 hour before
MIZ065-064-066-048-067-068-280100- SPECIAL WEATHER STATEMENT AND SHORT-RANGE WEATHER FORECAST NATIONAL WEATHER SERVICE ALPENA MI 625 PM EST WED MAR 27 1991 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF NORTHEAST LOWER MICHIGAN UNTIL MIDNIGHT... A TORNADO WATCH CONTINUES IN EFFECT FOR MUCH OF LOWER MICHIGAN THIS EVENING. IN NORTHEAST LOWER MICHIGAN...THE FOLLOWING COUNTIES ARE INCLUDED IN THE WATCH AREA: MONTMORENCY...ALPENA...OSCODA...ALCONA... AND IOSCO. AT 620 PM...STRONG THUNDERSTORMS CONTINUED TO MOVE CLOSER TO NORTHEAST LOWER MICHIGAN. STRONG THUNDERSTORMS EXTENDED SOUTHWEST FROM 15 MILES EAST OF CHEBOYGAN...TO JUST NORTHWEST OF GAYLORD. THESE THUNDERSTORMS WERE MOVING RAPIDLY TO THE NORTHEAST AROUND 50 MILES AN HOUR...AND WILL BE PASSING OVER ONAWAY BY 645 PM. OTHER THUNDERSTORMS WERE OCCURRING OVER THUNDER BAY...AND NEAR THE FLETCHER FLOODWATERS...AROUND 20 MILES SOUTHWEST OF ALPENA. THIS STORM WAS ALSO MOVING TO THE NORTHEAST...AND WILL BE PASSING OVER LACHINE BY 645 PM. A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF TORNADOES AND SEVERE THUNDERSTORMS. IF YOU ARE IN OR NEAR THE WATCH AREA...PREPARE YOURSELF FOR POSSIBLE TORNADOES...AND StEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS. CAMPBELL
Nearby
Severe Thunderstorm Warnings in Michigan, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.