Alert archive / Illinois / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 147, NWS Quad Cities, IA

June 29, 1998Putnam County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 29, 1998, 4:57 PM CDT for Putnam County, Illinois. It was in force for 48 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
Jun 29, 1998, 4:57 PM CDT (21:57 UTC)
Expired
Jun 29, 1998, 5:45 PM CDT
In force
48 min
Issued by
NWS Quad Cities, IA
Area
Whole counties

County Putnam County, IL

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 29, 3:15 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 10.0 hours before the alert went out and 111 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, Davenport, at 12:00Z on 1998-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 917 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, Davenport, at 12:00Z on 1998-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 square meters per square second.1939587897117136Sfc1 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
917 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
11 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.5

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.

NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 29, 12:52 PM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, Jun 29, 12:52 PM CDT, 4 hours 5 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1252 PM CDT MON JUN 29 1998

DISCUSSION WILL BE KEPT BRIEF WITH NEW TORNADO WATCH 700 ISSUED FOR
MOST OF CWA. STRONG/SEVERE THUNDERSTORMS CURRETLY OVER NORTHERN/CENTRAL
IOWA SHOULD MOVE E/SE ALONG INSTABILITY AXIS THIS AFTERNOON AND EVENING.
AMPLIFYING NORTHWEST FLOW SHOULD FINALLY SHOVE PESKY FRONT WELL SOUTH OF
REGION ON TUESDAY.

CID 063/30  DBQ 064/40  MLI 065/40  BRL 065/40

BERG

In the hours before

Local storm report, Jun 29, 3:21 PM CDT, 1 hour 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
246 PM CDT MON JUN 29 1998

TIME(CDT)  .....CITY LOCATION.....   ST   ...EVENT/REMARKS...
DATE(CDT)  ....COUNTY LOCATION....

305 PM     CEDAR RAPIDS AIRPORT      IA   72 MPH WIND
06/29/98   LINN                           ASOS OBSERVATION

0230 PM    WEST IOWA COUNTY          IA   WIND DAMAGE
06/29/98   IOWA                           TREES DOWN AND ROOFS OFF
                                          BUILDINGS

0255 PM    NORWAY                    IA   70 MPH WIND GUST
06/29/98   IOWA                           POSSIBLE 70 TO 80 MPH WIND

0255 PM    FAIRFAX                   IA   70 MPH WIND GUST
06/29/98   LINN                           POSSIBLE 70 TO 80 MPH WIND
Local storm report, Jun 29, 3:43 PM CDT, 1 hour 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
343 PM CDT MON JUN 29 1998

TIME(CDT)  .....CITY LOCATION.....   ST   ...EVENT/REMARKS...
DATE(CDT)  ....COUNTY LOCATION....

0338 PM    WEST LIBERTY              IA   70 MPH WIND GUST
06/29/98   MUSCATINE                      70 MPH WINDS DOWNED LARGE
                                          TREE LIMBS IN WEST LIBERTY

0345 PM    KEITHSBURG                IL   WIND DAMAGE
06/29/98   MERCER                         ESTIMATED 60 MPH WIND GUST
                                          CAUSED POWER OUTAGES

0346 PM    MUSCATINE                 IA   WIND DAMAGE
06/29/98   MUSCATINE                      NUMEROUS TREES DOWNED - POWER
                                          POLE DOWNED
Local storm report, Jun 29, 3:43 PM CDT, 1 hour 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
343 PM CDT MON JUN 29 1998

TIME(CDT)  .....CITY LOCATION.....   ST   ...EVENT/REMARKS...
DATE(CDT)  ....COUNTY LOCATION....

0338 PM    WEST LIBERTY              IA   70 MPH WIND GUST
06/29/98   MUSCATINE                      70 MPH WINDS DOWNED LARGE
                                          TREE LIMBS IN WEST LIBERTY

0345 PM    KEITHSBURG                IL   WIND DAMAGE
06/29/98   MERCER                         ESTIMATED 60 MPH WIND GUST
                                          CAUSED POWER OUTAGES

0346 PM    MUSCATINE                 IA   WIND DAMAGE
06/29/98   MUSCATINE                      NUMEROUS TREES DOWNED - POWER
                                          POLE DOWNED
Local storm report, Jun 29, 3:54 PM CDT, 1 hour 3 minutes before
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Local storm report, Jun 29, 3:54 PM CDT, 1 hour 3 minutes before
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Local storm report, Jun 29, 4:14 PM CDT, 43 minutes before
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 1:53 PM CDTSevere Thunderstorm WarningDVNBenton, Iowa62 min
Jun 29, 2:11 PM CDTSevere Thunderstorm WarningDVNKeokuk64 min
Jun 29, 2:24 PM CDTTornado WarningDVNBenton, Iowa36 min
Jun 29, 2:30 PM CDTSevere Thunderstorm WarningDVNJohnson, Linn65 min
Jun 29, 2:42 PM CDTTornado WarningDVNKeokuk33 min
Jun 29, 2:46 PM CDTSevere Thunderstorm WarningDVNJefferson, Washington64 min
Jun 29, 2:53 PM CDTTornado WarningDVNJohnson62 min
Jun 29, 2:55 PM CDTTornado WarningDVNWashington65 min
Jun 29, 3:07 PM CDTTornado WarningDVNCedar, Muscatine63 min
Jun 29, 3:07 PM CDTTornado WarningDVNHenry, Louisa63 min
Jun 29, 3:07 PM CDTTornado WarningDVNVan Buren63 min
Jun 29, 3:22 PM CDTTornado WarningDVNDes Moines, Lee63 min
Jun 29, 3:26 PM CDTSevere Thunderstorm WarningDVNClinton, Scott64 min
Jun 29, 6:03 PM CDTTornado WarningDVNLee62 min
Jun 29, 3:41 PM CDTTornado WarningDVNHenry64 min
Jun 29, 3:41 PM CDTTornado WarningDVNWarren64 min
Jun 29, 3:45 PM CDTTornado WarningDVNHancock65 min
Jun 29, 3:47 PM CDTTornado WarningDVNMcDonough63 min
Jun 29, 6:24 PM CDTTornado WarningDVNHancock51 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1998Every severe thunderstorm warning in 1998

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.