Alert archive / Michigan / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 49, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jul 6, 1994, 9:48 PM EDT for Jackson County, Michigan. It was in force for 42 min.
The area
The counties it named.
The facts
- Issued
- Jul 6, 1994, 9:48 PM EDT (01:48 UTC)
- Expired
- Jul 6, 1994, 10:30 PM EDT
- In force
- 42 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
County Jackson County, MI
The nearest sounding before it
Detroit, MI (KFNT), launched 00:00Z, 1.8 hours before the alert went out and 97 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
- 3396 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1060 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLAN 070147 SVRLAN MIC075-070230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LANSING MI 948 PM EDT WED JUL 6 1994 THE NATIONAL WEATHER SERVICE IN LANSING HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL MICHIGAN ...NORTHEASTERN JACKSON COUNTY AT 945 PM EDT...WEATHER RADAR INDICATED A POSSIBLE SEVERE THUNDERSTORM OVER EXETREME NORTHEAST JACKSON COUNTY. THE STORM WAS LOCATED 10 MILES NORTHEAST OF JACKSON...BETWEEN THE TOWNS OF MUNITH AND WATERLOO. THIS STORM IS NEARLY STATIONARY AND WILL AFFECT THE AREA UNTIL 1030 PM EDT. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. DESROSIERS
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 6, 8:18 PM EDT, 1 hour 30 minutes before
MIZ046-052-059-066-067-073-074-080-081-070045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING MI 816 PM EDT WED JUL 6 1994 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR PART OF SOUTH CENTRAL LOWER MICHIGAN... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ISABELLA AND GRATIOT COUNTIES UNTIL MIDNIGHT. IN ADDITION...THE SEVERE THUNDERSTORM WATCH FOR CLINTON COUNTY HAS BEEN EXTENDED UNTIL MIDNIGHT. TOWNS NOW COVERED BY A WATCH INCLUDE MT PLEASANT...ALMA...ITHACA...AND ST JOHNS. THE SEVERE THUNDERSTORM WATCH FOR EATON...INGHAM...CALHOUN...JACKSON ...BRANCH AND HILLSDALE COUNTIES HAS EXPIRED AS SCHEDULED. AT 810 PM...WEATHER RADAR SHOWED AN AREA OF VERY STRONG THUNDERSTORMS OVER THE THUMB AREA EXTENDING TO ISABELLA AND GRATIOT COUNTIES. THESE STORMS WERE MOVING TO THE EAST AT ABOUT 10 MILES AN HOUR. ONE STRONG STORM WAS NEAR THE TOWN OF SICKLES IN EASTERN GRATIOT COUNTY OR 25 MILES SOUTHEAST OF MT PLEASANT. IT WILL PASS OUT OF GRATIOT COUNTY BY 825 PM. A SECOND STRONG STORM WAS 10 MILES SOUTHWEST OF MT PLEASANT...OR BETWEEN BLANCHARD AND WINN IN SOUTHWEST ISABELLA COUNTY. THIS STORM WILL REACH WINN BETWEEN 820 AND 830 PM. SEVERE THUNDERSTORMS PRODUCE HAIL IN EXCESS OF 3/4 OF AN INCH IN DIAMETER AND WIND GUSTS OVER 60 MPH. FREQENT DEADLY LIGHTNING IS ALSO POSSIBLE. MOVE TO THE INTERIOR OF A STURDY BUILDING AS THESE STORMS PASS OVERHEAD. STAY TUNED TO NATIONAL WEATHER SERVICE RADIO OR YOUR LOCAL MEDIA OUTLET FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. DESROSIERS
Special weather statement, Jul 6, 8:25 PM EDT, 1 hour 23 minutes before
MIZ051-056>058-064-065-071-072-070100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 825 PM EDT WED JUL 6 1994 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT PARTS OF SOUTHWEST LOWER MICHIGAN UNTIL MIDNIGHT EDT... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT EDT ALONG AND NORTH OF INTERSTATE 96. THIS INCLUDES OTTAWA... KENT... IONIA AND MONTCALM COUNTIES. SOME COMMUNITIES IN THE WATCH AREA ARE ZEELAND... WYOMING... ROCKFORD... HOWARD CITY... GREENVILLE AND IONIA. AT 820 PM EDT... WEATHER RADAR INDICATED A STRONG THUNDERSTORM 25 MILES NORTHEAST OF GRAND RAPIDS BETWEEN SMYRNA AND SARANAC. THIS THUNDERSTORM WAS MOVING EAST AT 15 TO 20 MPH... AND SHOULD REACH HIGHWAY 66 FROM IONIA TO THE MONTCALM COUNTY LINE BY 850 PM EDT. THIS STORM IS LIKELY PRODUCING HEAVY RAIN... GUSTY WINDS AND SMALL HAIL. PEOPLE IN THIS AREA ARE URGED TO STAY ALERT FOR RAPIDLY CHANGING WEATHER. SLOW MOVING STORMS SUCH AS THESE CAN CAUSE LOCALIZED FLOODING... ESPECIALLY IN UNDERPASSES AND LOW LYING AREAS. DANGEROUS LIGHTNING CAN ALSO BE EXPECTED. TPH
Special weather statement, Jul 6, 8:25 PM EDT, 1 hour 23 minutes before
MIZ051-056>058-064-065-071-072-070100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 825 PM EDT WED JUL 6 1994 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT PARTS OF SOUTHWEST LOWER MICHIGAN UNTIL MIDNIGHT EDT... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT EDT ALONG AND NORTH OF INTERSTATE 96. THIS INCLUDES OTTAWA... KENT... IONIA AND MONTCALM COUNTIES. SOME COMMUNITIES IN THE WATCH AREA ARE ZEELAND... WYOMING... ROCKFORD... HOWARD CITY... GREENVILLE AND IONIA. AT 820 PM EDT... WEATHER RADAR INDICATED A STRONG THUNDERSTORM 25 MILES NORTHEAST OF GRAND RAPIDS BETWEEN SMYRNA AND SARANAC. THIS THUNDERSTORM WAS MOVING EAST AT 15 TO 20 MPH... AND SHOULD REACH HIGHWAY 66 FROM IONIA TO THE MONTCALM COUNTY LINE BY 850 PM EDT. THIS STORM IS LIKELY PRODUCING HEAVY RAIN... GUSTY WINDS AND SMALL HAIL. PEOPLE IN THIS AREA ARE URGED TO STAY ALERT FOR RAPIDLY CHANGING WEATHER. SLOW MOVING STORMS SUCH AS THESE CAN CAUSE LOCALIZED FLOODING... ESPECIALLY IN UNDERPASSES AND LOW LYING AREAS. DANGEROUS LIGHTNING CAN ALSO BE EXPECTED. TPH
Special weather statement, Jul 6, 9:00 PM EDT, 48 minutes before
MIZ051-056>058-064-065-071-072-070200- SPECIAL WEATHER STATEMENT AND MARINE WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 900 PM EDT WED JUL 6 1994 ...A SEVERE THUNDERSTORM WATCH IS IN EFFECT PARTS OF SOUTHWEST LOWER MICHIGAN UNTIL MIDNIGHT EDT... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL MIDNIGHT EDT ALONG AND NORTH OF INTERSTATE 96. THIS INCLUDES OTTAWA... KENT... IONIA AND MONTCALM COUNTIES. SOME COMMUNITIES IN THE WATCH AREA ARE SPRING LAKE... GRANDVILLE... GRAND RAPIDS... SIX LAKES... SHERIDAN AND PORTLAND. AT 900 PM EDT... WEATHER RADAR SHOWED A STRONG THUNDERSTORM IN EAST MONTCALM COUNTY OVER THE COMMUNITIES OF STANTON... EDMORE AND MCBRIDE. THIS THUNDERSTORM WILL CONTINUE TO AFFECT EAST MONTCALM COUNTY THROUGH 920 PM EDT BEFORE MOVING INTO GRATIOT COUNTY. MORE STORMS WERE POISED OVER WEST LAKE MICHIGAN AND SOUTH WISCONSIN. THESE STORMS SHOULD MOVE INTO THE MICHIGAN WATERS OF LAKE MICHIGAN BY 930 PM EDT... POSSIBLY REACHING THE LAKE SHORE NEAR GRAND HAVEN BY 1030 PM. FOR BOATERS ON SOUTHERN LAKE MICHIGAN OFF THE MICHIGAN SHORELINE TO MID LAKE... WHILE AFLOAT KEEP A WEATHER EYE OUT FOR THE APPROACH OF DARK... THREATENING CLOUDS WHICH WILL FORETELL A SQUALL OR THUNDERSTORM. IF THREATENING WEATHER APPROACHES... GET TO A SAFE HARBOR IMMEDIATELY. FOR PERSONS OVER SOUTHWEST LOWER MICHIGAN... REMEMBER... ALL THUNDERSTORMS PRODUCE DANGEROUS LIGHTNING. THIS IS ONE OF THE TOP WEATHER KILLERS IN THE COUNTRY. PRACTICE LIGHTNING SAFETY BY MOVING INDOORS UNTIL THE STORMS PASS. TPH
Special weather statement, Jul 6, 9:03 PM EDT, 45 minutes before
MIZ020-021-025>027-031>033-037>039-043>045-050-070230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MUSKEGON MI 900 PM EDT WED JUL 6 1994 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL MIDNIGHT FOR MUSKEGON... NEWAYGO... AND MECOSTA COUNTIES... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT FOR MUSKEGON... NEWAYGO... AND MECOSTA COUNTIES. ALL OTHER COUNTIES IN NORTHWEST AND WEST CENTRAL LOWER MICHIGAN ARE NO LONGER INCLUDED IN THE WATCH. COMMUNITIES THAT ARE STILL IN THE WATCH ARE FRUITPORT... WHITECLOUD... AND BIG RAPIDS. AT 855 PM EDT... WEATHER RADAR SHOWED STRONG THUNDERSTORMS IN EASTERN WISCONSIS FROM KENOSHA NORTH TO NEAR SHEBOYGAN. IN MICHIGAN THE THUNDERSTORMS WERE LOCATED IN EAST CENTRAL LOWER MICHIGAN FROM NORTHEAST MONTCALM COUNTY NEAR STANTON... TO ISABELLA COUNTY AND SOUTH TO THE FLINT AREA. THESE THUNDERSTORMS WERE SLOWLY MOVING SOUTHEAST AT 15 MPH AND WILL CONTINUE TO AFFECT THE ABOVE MENTIONED COUNTIES THROUGH 1000 PM. THE THUNDERSTORMS IN WISCONSIN WILL SLOWLY DRIFT EAST OVER LAKE MICHIGAN AND BE NEARLY MIDWAY BETWEEN MILWAUKEE AND MUSKEGON BY 1015 PM. THESE THUNDERSTORMS WILL LIKELY PRODUCE WIND GUSTS TO 45 MPH ALONG WITH SMALL HAIL AND TORRENTIAL RAIN AS THEY PASS THROUGH. LOTS OF LIGHTNING IS A GIVEN. IF THREATENING WEATHER APPROACHES... SEEK SHELTER IMMEDIATELY. FELVER
Special weather statement, Jul 6, 9:17 PM EDT, 31 minutes before
MIZ046-052-059-067-070200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING MI 916 PM EDT WED JUL 6 1994 ...A SEVERE THUNDERSTORM WATCH CONTINUES FOR PART OF SOUTH CENTRAL LOWER MICHIGAN... A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ISABELLA...GRATIOT AND CLINTON COUNTIES UNTIL MIDNIGHT EDT. THIS INCLUDES THE TOWNS OF MT PLEASANT...ALMA...ITHACA AND ST JOHNS. AT 912 PM...WEATHER RADAR SHOWED AN AREA OF VERY STRONG THUNDERSTORMS OVER THE THUMB AREA EXTENDING SOUTH CENTRAL LOWER MICHIGAN. ONE STRONG STORM WAS 20 MILES EAST OF LANSING...NEAR THE TOWN OF BELL OAK IN EXTREME NORTHEAST INGHAM COUNTY. IT WILL REMAIN NEARLY STATIONARY ...BRINGING HEAVY RAIN AND FREQUENT LIGHTNING TO THE AREA THROUGH 930 PM. A SECOND STRONG STORM WAS 20 MILES SOUTHEAST OF MT PLEASANT...OR NEAR THE TOWN OF ITHACA IN GRATIOT COUNTY. THIS STORM WAS MOVING SLOWLY TO THE EAST AT 10 MILES PER HOUR AND WILL AFFECT EDGEWOOD AND SICKLES BETWEEN 930 AND 940 PM. SEVERE WEATHER IS STILL POSSIBLE THIS EVENING. SEVERE THUNDERSTORMS PRODUCE HAIL 3/4 OF AN INCH OR GREATER IN DIAMETER...AND WINDS IN EXCESS OF 60 MPH. MOVE TO THE INTERIOR OF A STURDY BUILDING AS THUNDERSTORMS PASS OVERHEAD. STAY TUNED TO NATIONAL WEATHER SERVICE RADIO OR YOUR LOCAL MEDIA OUTLET FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. DESROSIERS
Nearby
Severe Thunderstorm Warnings in Michigan, 1994Every severe thunderstorm warning in 1994
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.