Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 31, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jul 4, 1990, 6:28 PM CDT for Jo Daviess County, Illinois. It was in force for 47 min.
The area
The counties it named.
The facts
- Issued
- Jul 4, 1990, 6:28 PM CDT (23:28 UTC)
- Expired
- Jul 4, 1990, 7:15 PM CDT
- In force
- 47 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Jo Daviess County, IL
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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.5 hours before the alert went out and 290 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
- 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
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 19 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 18 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, 1 hour 4 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, 1 hour 3 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
Nearby
Severe Thunderstorm Warnings in Illinois, 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.