Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 29, NWS Quad Cities, IA

July 4, 1990Lafayette County, Wisconsin

NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 4, 1990, 6:14 PM CDT for Lafayette County, Wisconsin. It was in force for 46 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
Jul 4, 1990, 6:14 PM CDT (23:14 UTC)
Expired
Jul 4, 1990, 7:00 PM CDT
In force
46 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

County Lafayette County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jul 4, 6:52 PM CDTHail 1.25Lafayette, WI

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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.2 hours before the alert went out and 260 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, Green Bay/Straub, WI at 12:00Z on 1990-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2269 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, Green Bay/Straub, WI at 12:00Z on 1990-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
2269 J/kg
Mixed-layer CIN
-307 J/kg
Mixed-layer LCL
1140 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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, Jul 4, 2:09 PM CDT, 4 hours 5 minutes before
IAZ008-WIZ018-ILZ001-042300-

SPECIAL WEATHER STATEMENT AND UPDATE FOR DUBUQUE AND VICINITY
NATIONAL WEATHER SERVICE DUBUQUE IA
205 PM CDT TUE JUL 3 1990

...EXCESSIVE HEAT THIS AFTERNOON FOR THE TRI-STATE...

AT 2 PM CDT THE TEMPERATURE AT THE DUBUQUE REGIONAL AIRPORT WAS 90
DEGREES WITH A RELATIVE HUMIDITY OF 62 PERCENT AND A HEAT INDEX OF 101
DEGREES.   DOWNTOWN DUBUQUE REPORTED TEMPERATURES IN THE MIDDLE 90S.

THROUGH 6 PM TEMPERATURES WILL RISE INTO THE MIDDLE TO UPPER 90S WITH
HEAT INDEXES OF 105 TO 110.  SUNSTROKE...HEAT CRAMPS AND HEAT
EXHAUSTION ARE LIKELY.  HEATSTROKE IS POSSIBLE WITH PROLONGED EXPOSURE
AND PHYSICAL ACTIVITY.

EVEN THOUGH ITS THE 4TH OF JULY...PERSONS IN THE TRI-STATE AREA SHOULD
USE SAFETY PRECAUTIONS TO GUARD AGAINST THE HEAT.  WEAR LIGHT LOOSE
FITTING CLOTHS...DRINK PLENTY OF WATER...WATCH THE ELDERLY AND
INFANTS...AND DON'T OVER EXERT YOURSELF.

HINNERS
Special weather statement, Jul 4, 3:10 PM CDT, 3 hours 4 minutes before
IAZ008-WIZ018-ILZ001-042300-

SPECIAL WEATHER STATEMENT AND UPDATE FOR DUBUQUE AND VICINITY
NATIONAL WEATHER SERVICE DUBUQUE IA
305 PM CDT TUE JUL 3 1990

...EXCESSIVE HEAT THIS AFTERNOON FOR THE TRI-STATE...

AT 3 PM CDT THE TEMPERATURE AT THE DUBUQUE REGIONAL AIRPORT WAS 92
DEGREES WITH A RELATIVE HUMIDITY OF 62 PERCENT AND A HEAT INDEX OF 106
DEGREES.   DOWNTOWN DUBUQUE REPORTED TEMPERATURES IN THE MIDDLE 90S.

THROUGH 6 PM TEMPERATURES WILL RISE INTO THE MIDDLE TO UPPER 90S WITH
HEAT INDEXES OF 105 TO 110.  SUNSTROKE...HEAT CRAMPS AND HEAT
EXHAUSTION ARE LIKELY.  HEATSTROKE IS POSSIBLE WITH PROLONGED EXPOSURE
AND PHYSICAL ACTIVITY.

EVEN THOUGH IT'S THE 4TH OF JULY...PERSONS IN THE TRI#-STATE AREA
SHOULD TAKE SAFETY PRECAUTIONS TO GUARD AGAINST THE HEAT.  WEAR LIGHT
LOOSE FITTING CLOTHES...DRINK PLENTY OF WATER...WATCH THE ELDERLY AND
INFANTS...AND DON'T OVER EXERT YOURSELF.

HINNERS
Special weather statement, Jul 4, 5:24 PM CDT, 50 minutes before
IAZ008-WIZ018-ILZ001-050130-

SPECIAL WEATHER STATEMENT AND UPDATE FOR DUBUQUE AND VICINITY
NATIONAL WEATHER SERVICE DUBUQUE IA
415 PM CDT TUE JUL 3 1990

...EXCESSIVE HEAT THIS AFTERNOON FOR THE TRI-STATE...

AT 4 PM CDT THE TEMPERATURE AT THE DUBUQUE REGIONAL AIRPORT WAS 92
DEGREES WITH A RELATIVE HUMIDITY OF 58 PERCENT AND A HEAT INDEX OF 104
DEGREES.   DOWNTOWN DUBUQUE REPORTED TEMPERATURES IN THE MIDDLE 90S.

THROUGH 830 PM TEMPERATURES WILL STATY IN THE LOW TO MIDDLE 90S WITH
HEAT INDEXES OF 105 TO 110.  SUNSTROKE...HEAT CRAMPS AND HEAT
EXHAUSTION ARE LIKELY.  HEATSTROKE IS POSSIBLE WITH PROLONGED EXPOSURE
AND PHYSICAL ACTIVITY.

EVEN THOUGH IT'S THE 4TH OF JULY...PERSONS IN THE TRI-STATE AREA
SHOULD TAKE SAFETY PRECAUTIONS TO GUARD AGAINST THE HEAT.  WEAR LIGHT
LOOSE FITTING CLOTHES...DRINK PLENTY OF WATER...WATCH THE ELDERLY AND
INFANTS...AND DON'T OVER EXERT YOURSELF.

HINNERS
Special weather statement, Jul 4, 5:25 PM CDT, 49 minutes before
IAZ008-WIZ018-ILZ001-050130-

SPECIAL WEATHER STATEMENT AND UPDATE FOR DUBUQUE AND VICINITY
NATIONAL WEATHER SERVICE DUBUQUE IA...CORRECTION
415 PM CDT TUE JUL 3 1990

...EXCESSIVE HEAT THIS EVENING FOR THE TRI-STATE...

AT 4 PM CDT THE TEMPERATURE AT THE DUBUQUE REGIONAL AIRPORT WAS 92
DEGREES WITH A RELATIVE HUMIDITY OF 58 PERCENT AND A HEAT INDEX OF 104
DEGREES.   DOWNTOWN DUBUQUE REPORTED TEMPERATURES IN THE MIDDLE 90S.

THROUGH 830 PM TEMPERATURES WILL STATY IN THE LOW TO MIDDLE 90S WITH
HEAT INDEXES OF 105 TO 110.  SUNSTROKE...HEAT CRAMPS AND HEAT
EXHAUSTION ARE LIKELY.  HEATSTROKE IS POSSIBLE WITH PROLONGED EXPOSURE
AND PHYSICAL ACTIVITY.

EVEN THOUGH IT'S THE 4TH OF JULY...PERSONS IN THE TRI-STATE AREA
SHOULD TAKE SAFETY PRECAUTIONS TO GUARD AGAINST THE HEAT.  WEAR LIGHT
LOOSE FITTING CLOTHES...DRINK PLENTY OF WATER...WATCH THE ELDERLY AND
INFANTS...AND DON'T OVER EXERT YOURSELF.

HINNERS
CORRECTED THE HEADLINE

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 4, 6:16 PM CDTSevere Thunderstorm WarningDVNGrant, Lafayette59 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.