Alert archive / Michigan / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 43, NWS Detroit, MI

July 7, 2014Genesee County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 7, 2014, 2:40 AM EDT for Genesee County, Michigan. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 7, 2014, 2:40 AM EDT (06:40 UTC)
Expired
Jul 7, 2014, 3:15 AM EDT
In force
35 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Genesee County, MI

The radar

The Detroit radar (KDTX), 41 km from the middle of the area, began a volume at 06:41 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 6.7 hours before the alert went out and 40 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.

Skew-T log-pSkew-T log-p diagram, Detroit, MI at 00:00Z on 2014-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 227 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 00:00Z on 2014-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
227 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
1073 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

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.

NWS Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 7, 1:18 AM EDT, 1 hour 22 minutes earlier.

Area forecast discussion, Jul 7, 1:18 AM EDT, 1 hour 22 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
118 AM EDT MON JUL 7 2014

.AVIATION...

//DISCUSSION...

EXTENSIVE AREA OF SHOWERS AND THUNDERSTORMS WILL CONTINUE TO IMPACT
MBS/FNT THROUGH 08Z...BRINGING PERIODIC MVFR/IFR CONDITIONS IN
MODERATE/HEAVY RAINFALL.  RECENT RADAR TRENDS LEND SUPPORT FOR
ONGOING CONVECTIVE ACTIVITY TO THEN SHIFT INTO PTK 07Z-09Z.
CONFIDENCE IN THUNDERSTORM OCCURRANCE DOES DIMINISH FOR THE DETROIT
CORRIDOR...WITH SOME POTENTIAL FOR THE OVERALL COVERAGE TO BE
CONSIDERABLY LESS AS NOCTURNAL COOLING GRADUALLY PROVIDES GREATER
STABILITY.  OVERALL...GREATEST POTENTIAL WILL EXIST 09Z-12Z IN
DETROIT...AND WILL RETAIN A DEFINED MENTION UNTIL TRENDS SUGGEST
OTHERWISE.   COLD FRONTAL PASSAGE WILL BRING A GENERAL DRYING TREND
FOR MONDAY WITH SOME INCREASE IN WESTERLY WINDS ANTICIPATED.  SOME
LINGERING LOWER STRATUS WILL EXIST BEFORE THIS DRYING TAKES A
GREATER HOLD INTO THE AFTERNOON.

//DTW THRESHOLD THREATS...

* HIGH CONFIDENCE IN CEILING AOB 5000 FEET TONIGHT THROUGH MONDAY
  MORNING.

* MEDIUM CONFIDENCE IN THUNDERSTORM OCCURANCE AND TIMING.

&&

.PREV DISCUSSION...ISSUED 403 PM EDT SUN JUL 6 2014

SHORT TERM... REST OF TODAY AND TONIGHT

OBSERVATIONAL TRENDS IN COMPOSITE RADAR OVER THE MIDWEST...COUPLED
WITH HOURLY MESO ANALYSIS...IS SHOWING THE RESULTS OF MLCAPE
BUILDING TO ABOUT 1500 J/KG OVER WISCONSIN. THIS IS WHERE SURFACE
HEATING AND SURFACE CONVERGENCE IS MAXIMIZED ON THE WESTERN EDGE OF
THE LOW CLOUD PATTERN AND WARM FRONT/COLD FRONT INTERSECTION. EXPECT
CONVECTION IN THIS AREA WILL CONTINUE TO GROW THROUGH PEAK HEATING
WITH A BOOST OF LARGER SCALE VERTICAL MOTION SUPPORT FROM THE UPPER
WAVE AND JET MAX MOVING IN FROM CENTRAL CANADA. THE INCREASED SHEAR
IN THE WIND PROFILE WILL HELP ORGANIZE THESE STORMS DURING THE
EVENING INTO A LINE THAT WILL HAVE SOME STAYING POWER AS INSTABILITY
BUILDS OVER LOWER MICHIGAN. THIS WILL OCCUR FIRST IN THE LEE OF LAKE
MICHIGAN OVER SW LOWER WHERE LEE SIDE SURFACE CONVERGENCE COULD
GENERATE SOME DISCRETE STORMS ALONG THE WARM FRONT OUT AHEAD OF THE
LINE MOVING IN FROM WISCONSIN. THERE IS LESS CONFIDENCE IN WARM
FRONTAL DEVELOPMENT CONSIDERING CLOUD COVER REMAINING OVER LOWER
MICHIGAN WILL LIKELY DELAY ONSET OR REDUCE COVERAGE COMPARED TO
MODEL TIMING...BUT THIS REQUIRES CLOSE MONITORING AS EARLY EVENING
CONVECTIVE DEVELOPMENT ALONG THE WARM FRONT WILL HAVE SEVERE
POTENTIAL DUE TO THE USUAL WARM FRONTAL CONTRIBUTIONS TO THE LOW
LEVEL HODOGRAPH. THE EVENTUAL MCS FROM WISCONSIN WILL ALSO HAVE
SEVERE POTENTIAL BUT BOTH SCENARIOS WILL FACE A WEST TO EAST
GRADIENT OF INSTABILITY THAT WILL RUN FROM 0-1KM MLCAPE AS HIGH AS
2000 J/KG OVER THE MIDWEST TO LESS THAN 1000 OVER PORTIONS OF SE
MICHIGAN AFTER MIDNIGHT.

UNCERTAINTY ON SEVERE POTENTIAL IS COUNTERED BY CONFIDENCE IN
COVERAGE AS THE LOW LEVEL JET RAMPS UP OVER THE REGION AFTER
MIDNIGHT. ASSOCIATED MOISTURE TRANSPORT IS SHOWN TO BE STRONG ENOUGH
TO BUILD A LOW LEVEL THETA-E RIDGE IN THE SURFACE TO 700 MB LAYER
THAT WILL IN ITSELF GENERATE SHOWERS AND THUNDERSTORMS. THIS WILL BE
REQUIRED TO MAINTAIN THE MODEST MLCAPE ADVERTISED IN THE MODEL DATA
AND WILL BE AVAILABLE FOR CONTINUED SUPPORT FROM THE SOUTH
FRINGES OF THE UPPER WAVE THAT WILL BE STRONG ENOUGH TO MAINTAIN
AREAL COVERAGE WORTHY OF HIGH END LIKELY POPS BEFORE THE PATTERN
EXITS BY SUNRISE MONDAY.

LONG TERM...MONDAY THROUGH SATURDAY

MODELS HAVE BEEN SHOWING GOOD RUN TO RUN CONSISTENCY WITH THE
OVERALL PATTERN EVOLUTION THROUGH MID WEEK. THEY ARE HOWEVER
STRUGGLING TO COME IN LINE WITH IMPORTANT SMALLER SCALE FEATURES
LIKE THE PLACEMENT AND TIMING OF A SHORTWAVE AND SFC LOW ON A COLD
FRONT PASSING THROUGH THE AREA EARLY ON TUESDAY. MORE TO COME ON
THAT.

BROAD TROUGHING OVER THE EASTERN CONUS WILL AMPLIFY AS RIDGING OVER
THE WEST COAST STRENGTHENS STEERING THE STRONG JET STREAM OVER THE
REGION. THE UPPER LEVEL TROUGH WILL LOOK TO CLOSE OFF AS IT
STRENGTHENS BEFORE BEING FORCED EASTWARD BY THE NEXT STRONG WAVE MID
TO LATE WEEK. THIS NW FLOW WILL GUIDE A SERIES OF SHORTWAVES AND
FRONTS THROUGH THE GREAT LAKES. THE FIRST FRONT WILL BE WORKING
THROUGH THE AREA DURING THE DAY MONDAY. THOUGH THE PREFRONTAL LINE
OF CONVECTION WILL USHER MOST OF THE RICH THETA E AIR OUT OF THE
AREA AND RESULT IN A PERIOD OF SUBSIDENCE...THERE WILL BE SOME LOWER
THETA E PRESENT INTO THE AFTERNOON WHILE THE TROUGH WORKS THROUGH.
WITH SOME DAYTIME HEATING ERODING THE LL CAP...MAY BE ABLE TO
MUSTER UP A FEW SHOWERS OR THUNDERSTORMS BEFORE THE FROPA. THE FRONT
WILL PASS LATE ENOUGH IN THE DAY TO ALLOW DECENT HEATING BACK INTO
THE 80S AGAIN.

QUIETER WEATHER WILL TAKE US INTO THE OVERNIGHT BUT WILL NOT LAST
LONG AS THE NEXT STRONG WAVE ENTERS THE TROUGH. THIS WAVE LOOKS TO
HAVE SEVERAL FAVORABLE PARAMETERS LINING UP FOR IT WHILE IT PASSES
THROUGH THE GREAT LAKES. IT WILL TAKE A SOUTHERN TRACK THROUGH THE
LOWER GREAT LAKES NEAR THE MI/OH BORDER LATE MONDAY NIGHT AND INTO
TUESDAY. IT WILL HAVE FAVORABLE LEFT EXIT REGION DYNAMICS OVERHEAD
WITH AN 850MB LL JET RAMPING UP TO AROUND 40 KNOTS YIELDING STRONG
BULK SHEAR OF 40+ KNOTS. GOOD SW FLOW WILL ADVECT ANOTHER MOISTURE
RICH AIRMASS INTO SOUTHERN MI AS WELL. LAPSE RATES WILL NOT BE TOO
GREAT BUT WILL BE FAVORABLE IN THE MID LEVEL. THE QUESTION REMAINS
WHERE WILL THE SFC LOW ACTUALLY DEVELOP? MODELS ARE ALL OVER THE
BOARD ANYWHERE FROM MID MI TO THE OHIO VALLEY ALONG THE STALLED
BAROCLINIC ZONE CLOSER TO THE BETTER INSTABILITY. THIS WILL MAKE A
BIG DIFFERENCE IN HOW THE SYSTEM PLAYS OUT AND HOW STRONG THE STORMS
OVER THE AREA WILL BE. EVEN IF THE PRESSURE FALLS SPLIT AS MODELS
HINT AT...ANY PRESSURE FALLS OVER THE AREA WITH THE WAY THE OTHER
PARAMETERS LINE UP SHOULD BE ABLE TO PRODUCE SOME CONVECTION OVER
THE AREA.

WINDS WILL BECOME NORTHERLY BEHIND THIS COLD FRONT ALLOWING COOLER
AIR TO FILTER INTO LOWER MI. WITH RAIN AND CLOUDS TO START THE
DAY...AND CAA DROPPING 850MB TEMPS TO NEAR 10C BY EVENING...EXPECT
HIGH TEMPS TO HOLD IN THE MID/UPPER 70S WITH HIGHER VALUES TO THE
SOUTH WHERE IT WILL TAKE THE FRONT LONGER TO PUSH THROUGH. LINGERING
TROUGH WITH POTENTIAL FOR ANOTHER WEAK SHORTWAVE TO PASS OVERHEAD
WILL KEEP A SLIGHT CHANCE POP IN THE FORECAST OVERNIGHT.

POST-FRONTAL AIRMASS ON WEDNESDAY WILL SPORT STABILITY AND COLD AIR
ADVECTION. THIS WILL BRING MAX TEMPS DOWN TO ABOUT 10 DEGREES BELOW
CLIMO. THESE VALUES MAY ALSO HOLD TRUE FOR THE OVERNIGHT AS HIGH
PRESSURE...LIGHT WINDS...AND LOW RH VALUES WILL BE FAVORABLE FOR
RADIATIONAL COOLING. RETURN FLOW FROM SURFACE HIGH BEGINS ON
THURSDAY...BUT WITH SINGLE DIGIT H85 TEMPS...EXPECT ANOTHER COOL AND
SUNNY DAY. WARMING TREND FRI-SUN WITH SHOWERS POSSIBLE ON THE WEEKEND.

MARINE...

INCREASED SOUTHWEST FLOW WILL RESULT IN WINDS GUSTING TO NEAR 20
KNOTS FOR ALL MARINE ZONES THROUGH MONDAY MORNING. CHANNELING WINDS
THROUGH SAGINAW BAY WILL PRODUCE SLIGHTLY HIGHER WINDS THUS THE
SMALL CRAFT ADVISORY WILL CONTINUE. GUSTS OVER LAKE ERIE WILL
APPROACH SMALL CRAFT CRITERIA JUST AHEAD OF THE FRONT BUT LOOK TO
STAY JUST BELOW THUS FAR. AN APPROACHING COLD FRONT WILL BRING A
CHANCE OF THUNDERSTORMS LATE TONIGHT THROUGH EARLY MONDAY.
ADDITIONAL THUNDERSTORMS WILL BE POSSIBLE ON TUESDAY AS ANOTHER COLD
FRONT SWEEPS THROUGH.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.

LAKE HURON...
     SMALL CRAFT ADVISORY...SAGINAW BAY...UNTIL 10 AM MONDAY.

LAKE ST CLAIR...NONE.
MI WATERS OF LAKE ERIE...NONE.

&&

AVIATION.....MR
SHORT TERM...BT
LONG TERM....DRK/MM
MARINE.......DRK

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
Hazardous weather outlook, Jul 6, 4:28 PM EDT, 10 hours 12 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
428 PM EDT SUN JUL 6 2014

MIZ047>049-053>055-060>063-068>070-075-076-082-083-070815-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
428 PM EDT SUN JUL 6 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN.

.DAY ONE... TONIGHT

THUNDERSTORMS ARE LIKELY TONIGHT AND MAY BE SEVERE IN THE SAGINAW
VALLEY AND NEAR SEVERE OVER THE REST OF SOUTHEAST MICHIGAN. DAMAGING
WIND GUSTS TO 60 MPH WILL BE THE PRIMARY HAZARD. HAIL UP TO 1 INCH
IS ALSO POSSIBLE ALONG WITH HEAVY RAINFALL. STORM MOTION WILL BE
WEST TO EAST AT 30 MPH DURING THE EVENING AND 40 TO 50 MPH AFTER
MIDNIGHT.

CLUSTERS OF STORMS DEVELOPING DURING THE EVENING OVER WISCONSIN ARE
EXPECTED TO ORGANIZE INTO A LINE AND MOVE INTO LOWER MICHIGAN AFTER
MIDNIGHT. ISOLATED STORMS AHEAD OF THE WISCONSIN ACTIVITY COULD ALSO
DEVELOP OVER SOUTHWEST LOWER MICHIGAN...NEAR THE LAKE MICHIGAN
SHORELINE...AND THEN MOVE INTO SOUTHEAST MICHIGAN BEFORE MIDNIGHT.
BOTH ROUNDS OF ACTIVITY COULD BECOME SEVERE IF ENOUGH INSTABILITY
CAN DEVELOP AND BE MAINTAINED AS WARMER AND MORE HUMID AIR ARRIVES
OVER THE REGION DURING THE NIGHT. THE PATTERN IS THEN EXPECTED TO
EXIT INTO ONTARIO BEFORE SUNRISE MONDAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THERE IS A CHANCE OF THUNDERSTORMS MONDAY THROUGH WEDNESDAY...THEN
AGAIN ON SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT YET PLANNED FOR TONIGHT.

LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-070815-
ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND 5NM
OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF SHORE-
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW
BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
428 PM EDT SUN JUL 6 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE
HURON AND LAKE ST CLAIR.

.DAY ONE... TONIGHT

SMALL CRAFT ADVISORIES REMAIN IN EFFECT FOR SAGINAW BAY. PLEASE SEE
THE LATEST MARINE FORECASTS AND STATEMENTS FOR DETAILS.

THUNDERSTORMS ARE LIKELY TONIGHT AND COULD BECOME HAZARDOUS TO
MARINE INTERESTS OVER ALL OF LAKE HURON...LAKE ST CLAIR...AND THE
MICHIGAN WATERS OF LAKE ERIE. WIND GUSTS EXCEEDING 35 KNOTS WILL BE
THE PRIMARY HAZARD. HAIL UP TO 1 INCH IS ALSO POSSIBLE ALONG WITH
HEAVY RAINFALL. STORM MOTION WILL BE WEST TO EAST AT 25 KNOTS DURING
THE EVENING AND 30 TO 40 KNOTS AFTER MIDNIGHT.

CLUSTERS OF STORMS DEVELOPING DURING THE EVENING OVER WISCONSIN ARE
EXPECTED TO ORGANIZE INTO A LINE AND MOVE INTO LAKE HURON AND LOWER
MICHIGAN DURING THE NIGHT. ISOLATED STORMS AHEAD OF THE WISCONSIN
ACTIVITY COULD ALSO DEVELOP OVER SOUTHWEST LOWER MICHIGAN...NEAR THE
LAKE MICHIGAN SHORELINE...AND THEN MOVE TOWARD SAGINAW BAY BEFORE
MIDNIGHT. BOTH ROUNDS OF ACTIVITY COULD BECOME SEVERE IF ENOUGH
INSTABILITY CAN DEVELOP AND BE MAINTAINED AS WARMER AND MORE HUMID
AIR ARRIVES OVER THE REGION DURING THE NIGHT. THE PATTERN IS THEN
EXPECTED TO EXIT INTO ONTARIO BEFORE SUNRISE MONDAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THERE IS A CHANCE OF THUNDERSTORMS MONDAY THROUGH WEDNESDAY...THEN
AGAIN ON SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT YET PLANNED FOR TONIGHT.

BT

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).

In the hours before

Special weather statement, Jul 6, 10:15 PM EDT, 4 hours 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1015 PM EDT SUN JUL 6 2014

MIZ047-048-053-060-070315-
BAY MI-MIDLAND MI-SAGINAW MI-SHIAWASSEE MI-
1015 PM EDT SUN JUL 6 2014

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BAY...NORTHWESTERN
SHIAWASSEE...WESTERN SAGINAW AND MIDLAND COUNTIES UNTIL 1115 PM
EDT...

AT 1011 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 10 MILES NORTHWEST
OF COLEMAN TO 10 MILES SOUTHWEST OF ITHACA...AND MOVING EAST AT 25
MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH ARE EXPECTED
WITH THESE STORMS...ALONG WITH HEAVY RAIN.

THESE STORMS WILL BE NEAR...
PLEASANT VALLEY...OIL CITY AND COLEMAN AROUND 1030 PM EDT.
NORTH BRADLEY AROUND 1045 PM EDT.
PORTER TOWNSHIP AROUND 1050 PM EDT.
EDENVILLE AROUND 1055 PM EDT.
SANFORD AND GORDONVILLE AROUND 1100 PM EDT.
HOPE...AVERILL...MERRILL...MARION SPRINGS AND FENMORE AROUND 1105 PM
EDT.
BOMBAY AROUND 1110 PM EDT.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

KURIMSKI
Special weather statement, Jul 7, 12:34 AM EDT, 2 hours 6 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1234 AM EDT MON JUL 7 2014

MIZ060-070515-
SHIAWASSEE MI-
1234 AM EDT MON JUL 7 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL SHIAWASSEE COUNTY UNTIL
115 AM EDT...

AT 1232 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 9 MILES WEST OF ST. JOHNS...MOVING EAST AT 35
MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

THIS STORM WILL BE NEAR...
LAINGSBURG AND CARLAND AROUND 105 AM EDT.
BENNINGTON AROUND 110 AM EDT.
OWOSSO AND CORUNNA AROUND 115 AM EDT.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

KURIMSKI
Special weather statement, Jul 7, 1:07 AM EDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
107 AM EDT MON JUL 7 2014

MIZ053-070600-
SAGINAW MI-
107 AM EDT MON JUL 7 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL SAGINAW COUNTY UNTIL 200
AM EDT...

AT 107 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ITHACA...MOVING EAST AT 40 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

THIS STORM WILL BE NEAR...
MARION SPRINGS AND FENMORE AROUND 125 AM EDT.
BRANT AROUND 130 AM EDT.
NELSON AROUND 135 AM EDT.
ST. CHARLES...GARFIELD AND CHESANING AROUND 140 AM EDT.
SHIAWASSEE NATIONAL WILDLIFE REFUGE AND LAYTON CORNERS AROUND 150 AM
EDT.
FOSTERS AND BURT AROUND 155 AM EDT.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

KURIMSKI
Special weather statement, Jul 7, 1:14 AM EDT, 1 hour 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
114 AM EDT MON JUL 7 2014

MIZ060-070600-
SHIAWASSEE MI-
114 AM EDT MON JUL 7 2014

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN SHIAWASSEE COUNTY UNTIL
200 AM EDT...

AT 111 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ELSIE...MOVING EAST AT 40 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

THIS STORM WILL BE NEAR...
CARLAND AROUND 120 AM EDT.
BENNINGTON AROUND 125 AM EDT.
OWOSSO AND HENDERSON AROUND 130 AM EDT.
CORUNNA AROUND 135 AM EDT.
JUDDVILLE AROUND 145 AM EDT.
LENNON AND NEW LOTHROP AROUND 150 AM EDT.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

KURIMSKI
Special weather statement, Jul 7, 2:16 AM EDT, 24 minutes before
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The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 2:01 AM EDTAreal Flood AdvisoryDTXSaginaw, Shiawassee3 hr
Jul 7, 4:46 AM EDTSpecial Marine WarningDTX104 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2014Every severe thunderstorm warning in 2014

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; radar from the NEXRAD Level II archive.