Severe Thunderstorm Warning 133, NWS Quad Cities, IA

Issued

Aug 1, 2000, 7:13 PM CDT (00:13 UTC)

Expired

Aug 1, 2000, 8:30 PM CDT

In force

77 min

Issued by

NWS Quad Cities, IA

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Buchanan County, IA

The La Crosse radar (KARX), 118 km from the middle of the area, began a volume at 00:15 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.

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.

954 
WUUS53 KDVN 020012
SVRMLI
IAC019-055-061-020130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
713 PM CDT TUE AUG 1 2000

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BUCHANAN COUNTY IN NORTHEAST IOWA
  DELAWARE COUNTY IN NORTHEAST IOWA
  DUBUQUE COUNTY IN NORTHEAST IOWA

* UNTIL 830 PM CDT

* AT 710 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS    
  EXTENDING FROM 29 MILES NORTH OF WAUPETON TO 13 MILES  NORTH OF 
  COLESBURG TO 7 MILES NORTH OF EDGEWOOD TO 15 MILES NORTH OF 
  AURORA...MOVING SOUTHEAST AT 30 MPH.

* THE LINE OF SEVERE THUNDERSTORMS WILL BE NEAR...
   COLESBURG...TWIN BRIDGES PARK BY 730 PM CDT.
   AURORA...EDGEWOOD...FOUNTAIN SPRINGS PARK BY 735 PM CDT.
   LUXEMBURG BY 740 PM CDT.
   BACKBONE STATE PARK...GREELEY...HOLY CROSS BY 745 PM CDT.

THESE SEVERE THUNDERSTORMS ARE CAPABLE OF PRODUCING VERY DAMAGING
WINDS 60 TO 70 MPH AS WELL AS HAIL UP TO 1 INCH IN DIAMETER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN THE QUAD CITIES.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT
TUESDAY EVENING FOR NORTHEASTERN IOWA.

LAT...LON 4320 9107 4290 9123 4282 9148 4291 9200
          4240 9163 4232 9095 4239 9070 4270 9054

CROSBIE

NWS Quad Cities, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 1, 2:14 PM CDT, 4 hours 59 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
214 PM CDT TUE AUG 1 2000

18Z SURFACE ANALYSIS AND COOP OBSERVER REPORTS VERIFY THAT AIRMASS
OVER THE NORTH...ESPECIALLY NORTHWEST...PART OF OUR FORECAST AREA IS
BECOMING MORE UNSTABLE WITH ACCAS BEING REPORTED.  THIS VERIFIES WELL
WITH MORNING UPPER AIR ANALYSIS WHICH INDICATED THAT COOLER AIR ALOFT
WAS ADVECTING INTO THE AREA OUT OF MINNESOTA.  12Z 500 MB TEMP WAS -9
C OVER DVN BUT -11 TO -14 C AIR OVER MINNESOTA WILL CONTINUE TO
DROP SOUTH INTO EAST CENTRAL IA AND NORTHWEST IL.  AGREE WITH SPC
THAT THIS WILL BE THE AREA TO MONITOR FOR POSSIBLE SEVERE
THUNDERSTORM DEVELOPMENT LATER THIS AFTERNOON.  SEVERE THUNDERSTORM
WATCH IS VERY LIKELY ACROSS THE DUBUQUE AND CEDAR RAPIDS AREA THIS
AFTERNOON AND EVENING.  CLOUD COVER OVER MOST OF THE FORECAST AREA
WAS HOLDING TEMPERATURES DOWN A BIT. MORE SUNSHINE WAS NOTED ALONG
THE IA MO BORDER...EXTENDING INTO WEST CENTRAL IL. CONVECTIVE
TEMPERATURES HAVE BEEN REACHED BUT SO FAR NOT MUCH HAPPENING ON
SATELLITE.

FORECAST CHALLENGES THROUGH WEDNESDAY EVENING/NIGHT WILL BE TIMING OF
SHORTWAVE PULSES AND TIMING CHANCES OF PRECIPITATION AND
THUNDERSTORMS.

12Z ETA INITIALIZED PRECIPITATION ACROSS SOUTH DAKOTA AND MINNESOTA
WHILE ACTUALLY AT 12Z SCATTERED PRECIPITATION WAS MAINLY OVER EAST
NEBR AND WISCONSIN.  18Z ETA HAD ACTUALLY COME BACK IN LINE A LITTLE
BETTER WITH REALITY.  ETA BRINGING IN NEXT SHORTWAVE WEDNESDAY
AFTERNOON/EVENING WITH PRECIPITATION OVER NEBR AND KANSAS.  IF YOU
BELIEVE THE MRF...WILL HAVE TO INTRODUCE SOME RAIN AGAIN ON SUNDAY.

FRONT SAGGING ACROSS FORECAST AREA ON WEDNESDAY SHOULD AGAIN BE A
FOCUS FOR AFTERNOON THUNDERSTORMS...ESPECIALLY ACROSS THE
IOWA/MISSOURI BORDER REGION INTO WEST CENTRAL ILLINOIS AND SOUTHERN
ILLINOIS.  WILL HAVE TO ONCE AGAIN MONITOR THIS AREA FOR A FEW SEVERE
THUNDERSTORMS.  RAIN SHOULD END BY THURSDAY MORNING ACROSS FORECAST
REGION FOLLOWED BY DRY BUT WARM WEATHER INTO THE WEEKEND. UPPER
TROUGH IS NOT REALLY GOING ANYWHERE WITH PIECES OF ENERGY FALLING IN
FROM BEHIND REINFORCING IT SO A FEW RESIDUAL SHOWERS POSSIBLE MAINLY
EAST OF THE MISSISSIPPI THURSDAY MORNING.  THIS IS PRETTY MUCH GOING
TOTALLY AGAINST GUIDANCE...BUT WILL THROW IN A CHANCE OF SHOWERS IN
THE ZONES IN THAT AREA BUT KEEP IT DRY ACROSS IOWA AND MISSOURI
COUNTIES.

WITH ABOVE SAID...WILL LEAVE DAY AND 3 AND 4 DRY AND GO WITH A
CHANCE OF SHOWERS AND THUNDERSTORMS ON ON SUNDAY.

.DVN...
IA...NONE.
IL...NONE.
MO...NONE.

MEYER

Severe Thunderstorm Warnings in Iowa, 2000Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.