Alert archive / Iowa / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 64, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 4, 1995, 7:24 PM CDT for Black Hawk County, Iowa. It was in force for 31 min.
The area
The counties it named.
The facts
- Issued
- Jul 4, 1995, 7:24 PM CDT (00:24 UTC)
- Expired
- Jul 4, 1995, 7:55 PM CDT
- In force
- 31 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Black Hawk County, IA
The radar
The Des Moines radar (KDMX), 143 km from the middle of the area, began a volume at 00:27 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
Davenport, (KDVN), launched 00:00Z, 0.4 hours before the alert went out and 177 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
- 403 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 1293 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 050021 RRA
SVRDSM
IAC013-050055-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
724 PM CDT TUE JUL 4 1995
* SEVERE THUNDERSTORM WARNING FOR
BLACK HAWK COUNTY - NORTHEAST IOWA
* UNTIL 755 PM CDT
* SOME TOWNS AFFECTED
WATERLOO
HUDSON
EVANSDALE
* AT 719 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES SOUTHWEST
OF WATERLOO MOVING NORTHEAST AT 30 MPH.
* THE STORM WILL BE IN WATERLOO BY 740 AND EVANSDALE BY 745 PM CDT.
THIS IS A DANGEROUS STORM. DO NOT GO OUTDOORS.
SMITHWhat 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, 1:38 PM CDT, 5 hours 46 minutes before
IAZALL-050000- IOWA SEVERE WEATHER OUTLOOK...CORRECTION NATIONAL WEATHER SERVICE DES MOINES IA 138 PM CDT TUE JUL 4 1995 HAZARD...SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. LARGE HAIL AND AN ISOLATED TORNADO IS ALSO POSSIBLE. AREA OF CONCERN...ABOUT THE SOUTHEAST TWO-THIRDS OF IOWA...SOUTHEAST OF A LINE FROM MASON CITY TO OMAHA-COUNCIL BLUFFS. TIMING DETAILS...WIDELY SCATTERED THUNDERSTORMS WERE MOVING RAPIDLY NORTHEAST ACROSS EAST CENTRAL IOWA EARLY THIS AFTERNOON...BUT THESE ARE NOT EXPECTED TO BECOME SEVERE. SEVERE THUNDERSTORMS DEVELOPING OVER NORTHEAST KANSAS WILL RACE INTO SOUTHERN IOWA AFTER 600 PM AND INTO NORTHERN IOWA AFTER 1000 PM. METEOROLOGICAL COMMENTS...A FAST-MOVING SITUATION WAS DEVEOPING AS AN UNUSUALLY STRONG STORM SYSTEM FOR THIS TIME OF YEAR ROTATES OVER SOUTHEAST SOUTH DAKOTA. EXTREMELY UNSTABLE AIR WAS LIFTING NORTH INTO IOWA FROM MISSOURI AND KANSAS...WHERE LIFTED INDICES WERE BELOW MINUS 10. VERY STRONG SOUTH WINDS OVER 60 MPH WERE INDICATED ABOUT 3000 FEET UP IN THE ATMOSPHERE...WHICH MAKES DAMAGING DOWNBURST WINDS THE MAIN THREAT. IF SOUTHEAST WINDS CONTINUE AT THE SURFACE OVER IOWA...THE THREAT OF TORNADOES MAY INCREASE. PRECAUTIONS...PEOPLE WHO HAVE OUTDOOR PLANS THIS EVENING...ALONG WITH COMMUNITIES HAVING FIREWORKS DISPLAYS...SHOULD MONITOR THIS SITUATION VERY CLOSELY THIS EVENING. SPOTTER ACTIVATION MAY BE REQUIRED AS WELL. PYTLAK CORRECTION FOR WORDING IN 3RD PARAGRAPH
Special weather statement, Jul 4, 5:15 PM CDT, 2 hours 9 minutes before
IAZ082-042255- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 519 PM CDT TUE JUL 4 1995 ...THE SEVERE THUNDERSTORMS WARNING FOR EASTERN UNION COUNTY IS CANCELLED... A SPOTTER AT THAYER REPORTED 40 MILES AN HOUR WINDS AT PEA SIZED HAIL AT 511 PM CDT. THESE THUNDERSTORMS WERE HEADING INTO CLARKE COUNTY NEAR MURRAY AND HOPEVILLE...45 MILES SOUTHWEST OF DES MOINES. PEOPLE IN THE PATH OF THESE THUNDERSTORMS SHOULD TAKE COVER NOW. BELLES
Special weather statement, Jul 4, 5:19 PM CDT, 2 hours 5 minutes before
IAZ082-042255- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 519 PM CDT TUE JUL 4 1995 ...THE SEVERE THUNDERSTORMS WARNING FOR EASTERN UNION COUNTY IS CANCELLED... A SPOTTER AT THAYER REPORTED 40 MILES AN HOUR WINDS AT PEA SIZED HAIL AT 511 PM CDT. THESE THUNDERSTORMS WERE HEADING INTO CLARKE COUNTY NEAR MURRAY AND HOPEVILLE...45 MILES SOUTHWEST OF DES MOINES. PEOPLE IN THE PATH OF THESE THUNDERSTORMS SHOULD TAKE COVER NOW. BELLES
Special weather statement, Jul 4, 5:27 PM CDT, 1 hour 57 minutes before
IAZALL-042305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 530 PM CDT TUE JUL 4 1995 ...STRONG STORMS MOVING THROUGH CENTRAL IOWA... DOPPLER RADAR INDICATES STRONG WINDS MOVING INTO SOUTHWEST WARREN COUNTY. WINDS GUST UP TO 50 MILES AN HOUR ARE POSSIBLE WITH THESE STORMS. THE THUNDERSTORMS ARE PART OF A LINE OF STORMS FROM CLIVE TO ST CHARLES TO HOPEVILLE. WINDS UP TO 50 MILES AN HOUR...DEADLY LIGHTNING AND PEA SIZED HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS AS THEY MOVE THROUGH THE CITIES OF DES MOINES...INDIANOLA...AND OSCEOLA DURING THE NEXT HALF HOUR. IF YOU ARE IN THE PATH OF THESE THUNDERSTORMS TAKE SHELTER IMMEDIATELY. BELLES
Special weather statement, Jul 4, 5:30 PM CDT, 1 hour 54 minutes before
IAZALL-042305- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 530 PM CDT TUE JUL 4 1995 ...STRONG STORMS MOVING THROUGH CENTRAL IOWA... DOPPLER RADAR INDICATES STRONG WINDS MOVING INTO SOUTHWEST WARREN COUNTY. WINDS GUST UP TO 50 MILES AN HOUR ARE POSSIBLE WITH THESE STORMS. THE THUNDERSTORMS ARE PART OF A LINE OF STORMS FROM CLIVE TO ST CHARLES TO HOPEVILLE. WINDS UP TO 50 MILES AN HOUR...DEADLY LIGHTNING AND PEA SIZED HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS AS THEY MOVE THROUGH THE CITIES OF DES MOINES...INDIANOLA...AND OSCEOLA DURING THE NEXT HALF HOUR. IF YOU ARE IN THE PATH OF THESE THUNDERSTORMS TAKE SHELTER IMMEDIATELY. BELLES
Special weather statement, Jul 4, 7:20 PM CDT, 4 minutes before
IAZALL-050025- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 720 PM CDT TUE JUL 4 1995 ...SEVERE THUNDERSTORM WATCH 706 IS NO LONGER IN EFFECT FOR SEVERAL COUNTIES IN IOWA... KOSSUTH WINNEBAGO HANCOCK HUMBOLT CALHOUN WEBSTER HARDIN WRIGHT HAMILTON GREENE CARROLL BOONE STORY POLK DALLAS GUTHRIE AUDUBON ADAIR MADISON ADAMS UNION CLARKE DECATUR RINGGOLD TAYLOR ...SEVERE THUNDERSTORM WATCH NUMBER 704 IS NO LONGER IN EFFECT FOR THESE COUNTIES IN IOWA... CASS FREEMONT MONTGOMERY PAGE
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 7:18 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Poweshiek | 27 min |
| Jul 4, 7:59 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk | 21 min |
| Jul 5, 1:45 PM CDT | Tornado Warning | DMX | Chickasaw | 15 min |
| Jul 5, 2:10 PM CDT | Tornado Warning | DMX | Chickasaw, Winneshiek | 15 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1995Every severe thunderstorm warning in 1995
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.