Alert archive / Iowa / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 39, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 19, 1992, 7:02 PM CDT for Jefferson County, Iowa. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- Jun 19, 1992, 7:02 PM CDT (00:02 UTC)
- Expired
- Jun 19, 1992, 7:30 PM CDT
- In force
- 28 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Jefferson County, IA
The nearest sounding before it
Omaha, NE (KOVN), launched 00:00Z, 0.0 hours before the alert went out and 371 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
- 862 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1119 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KDSM 200004 SVRDSM IAC101-200030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 702 PM CDT FRI JUN 19 1992 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST IOWA ...SOUTHEASTERN JEFFERSON COUNTY AT 700 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM IN CENTRAL JEFFERSON COUNTY JUST NORTH OF FAIRFIELD...WHICH IS ABOUT 25 MILES EAST OF OTTUMWA. THE STORM WAS MOVING SOUTHEAST AROUND 30 MILES AN HOUR AND WILL AFFECT THE TOWNS OF FAIRFIELD AND LOCKRIDGE AS WELL AS THOSE IN RURAL AREAS OF THE SOUTHEAST HALF OF JEFFERSON COUNTY. A TREE WAS UPROOTED AROUND 630 PM CDT JUST SOUTH OF THE TOWN OF HARPER IN KEOKUK COUNTY. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. MOVE TO THE CENTER OF YOUR HOUSE...STAY AWAY FROM WINDOWS...AND BE READY TO ACT QUICKLY IF A TORNADO DEVELOPS. JLA
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, Jun 19, 5:45 PM CDT, 1 hour 17 minutes before
IAZALL-192340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 539 PM CDT FRI JUN 19 1992 ...TORNADO WATCH VALID UNTIL 9 PM FOR A LARGE PART OF EASTERN IOWA... AT 530 PM CDT...A STRONG THUNDERSTORM WITH VERY HEAVY RAIN AND GUSTY WINDS WAS LOCATED 40 MILES WEST OF IOWA CITY NEAR BROOKLYN. MOVEMENT WAS EAST AT 30 MILES AN HOUR. ALSO...ANOTHER STRONG THUNDERSTORM WITH VERY HEAVY RAIN...GUSTY WINDS AND POSSIBLE HAIL WAS LOCATED 35 MILES NORTHWEST OF DUBUQUE ELKADER. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR. THESE STORMS WERE PART OF A LARGER AREA OF SCATTERED SHOWERS AND THUNDERSTORMS WHICH CONTINUED ACROSS THE EASTERN ONE-THIRD OF IOWA. MOVEMENT OF T7HESE SHOWERS AND THUNDERSTORMS WAS EAST AT 25 MILES AN HOUR.
Special weather statement, Jun 19, 5:47 PM CDT, 1 hour 15 minutes before
IAZALL-192340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTION NATIONAL WEATHER SERVICE DES MOINES IA 539 PM CDT FRI JUN 19 1992 ...TORNADO WATCH VALID UNTIL 9 PM FOR A LARGE PART OF EASTERN IOWA... AT 530 PM CDT...A STRONG THUNDERSTORM WITH VERY HEAVY RAIN AND GUSTY WINDS WAS LOCATED 40 MILES WEST OF IOWA CITY NEAR BROOKLYN. MOVEMENT WAS EAST AT 30 MILES AN HOUR. ALSO...ANOTHER STRONG THUNDERSTORM WITH VERY HEAVY RAIN...GUSTY WINDS AND POSSIBLE HAIL WAS LOCATED 35 MILES NORTHWEST OF DUBUQUE NEAR ELKADER. MOVEMENT WAS SOUTHEAST AT 35 MILES AN HOUR. THESE STORMS WERE PART OF A LARGER AREA OF SCATTERED SHOWERS AND THUNDERSTORMS WHICH CONTINUED ACROSS THE EASTERN ONE-THIRD OF IOWA. MOVEMENT OF THESE SHOWERS AND THUNDERSTORMS WAS EAST AT 25 MILES AN HOUR. R A PRENTICE
Special weather statement, Jun 19, 6:11 PM CDT, 51 minutes before
IAZ002-003-007-190100- SPECIAL WEATHER STATEMENT AND WEATHER UPDATE NATIONAL WEATHER SERVICE WATERLOO IA 615 PM CDT FRI JUN 19 1992 ...A TORNADO WATCH UNTIL 9PM CDT FOR MUCH OF NORTHEAST IOWA... THUNDERSTORMS WILL RUMBLE THROUGH NORTHEAST IOWA THIS EVENING. AS THE STORMS MOVE SOUTHEAST THEY WILL AFFECT THE CITIES OF... OLEWEIN...FAIRBANK...HAZLETON...LAMONT... BY 7PM AND THE CITIES OF JESUP...INDEPENDENCE AND THE AREA ALONG AND TO THE NORTH OF HIGHWAY 20 BY 8PM. THERE HAVE BEEN NO SEVERE WEATHER REPORTS WITH THESE STORMS BUT STRONG WINDS ....SMALL HAIL....AND HEAVY RAIN IS LIKELY WITH THE PASSAGE OF THESE POTENTIALLY DANGEROUS STORMS. DP
Special weather statement, Jun 19, 6:11 PM CDT, 51 minutes before
IAZALL-200015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 610 PM CDT FRI JUN 19 1992 ...TORNADO WATCH VALID UNTIL 9 PM FOR A LARGE PART OF EASTERN IOWA... AT 605 PM CDT...A VERY STRONG THUNDERSTORM WAS LOCATED IN NORTHEAST IOWA...25 MILES NORTHEAST OF WATERLOO OR JUST NORTHEAST OF OELWEIN. THE STORM WAS MOVING SOUTHEAST AT AROUND 35 MILES AN HOUR. A SECOND VERY STRONG THUNDERSTORM WAS OCCURRING IN SOUTHEAST IOWA... 25 MImLES NORTHEAST OF OTTUMWA OR 10 MILES EAST OF WHAT CHEER. THE STORM WAS MOVING EAST AT 30 TO 35 MILES AN HOUR. BOTH STORMS WERE PRODUCING BRIEF VERY HEAVY RAIN...GUSTY WINDS AND POSSIBLY SOME SMALL HAIL. JAK
Special weather statement, Jun 19, 6:43 PM CDT, 19 minutes before
IAZALL-200140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 642 PM CDT FRI JUN 19 1992 ...TORNADO WATCH VALID UNTIL 9 PM FOR A LARGE PART OF EASTERN IOWA... AT 630 PM CDT...A VERY STRONG THUNDERSTORM...PRODUCING VERY HEAVY RAIN...GUSTY WINDS AND POSSIBLY SOME HAIL...WAS LOCATED IN SOUTHEAST IOWA. THE STORM WAS 25 MILES NORTHEAST OF OTTUMWA OR 10 MILES WEST OF WASHINGTON. THE STORM WAS MOVING SOUTHEAST AT 35 MILES AN HOUR. OTHER STRONG STORMS WERE OCCURRING 30 MILES NORTHEAST OF WATERLOO OR 10 MILES EAST OF OELWEIN...AND IN A NARROW BAND EXTENDING FROM 25 MILES NORTH TO 40 MILES EAST OF OTTUMWA. THESE STORMS WERE ALSO CAPABLE OF PRODUCING HEAVY AND POSSIBLY SOME SMALL HAIL. THE STORMS WERE PART OF AN AREA OF SCATTERED SHOWERS AND STORMS LOCATED GENERALLY EAST OF A LINE FROM WATERLOO TO THE IOWA/MISSOURI BORDER SOUTH OF OTTUMWA. . THE AREA OF SHOWERS AND STORMS WAS MOVING EAST AT 30 TO 35 MILES AN HOUR. JAK
Special weather statement, Jun 19, 6:47 PM CDT, 15 minutes before
IAZALL-200140- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTION 2ND PARAGRAPH NATIONAL WEATHER SERVICE DES MOINES IA 642 PM CDT FRI JUN 19 1992 ...TORNADO WATCH VALID UNTIL 9 PM FOR A LARGE PART OF EASTERN IOWA... AT 630 PM CDT...A VERY STRONG THUNDERSTORM...PRODUCING VERY HEAVY RAIN...GUSTY WINDS AND POSSIBLY SOME HAIL...WAS LOCATED IN SOUTHEAST IOWA. THE STORM WAS 25 MILES NORTHEAST OF OTTUMWA OR 10 MILES WEST OF WASHINGTON. THE STORM WAS MOVING SOUTHEAST AT 35 MILES AN HOUR. OTHER STRONG STORMS WERE OCCURRING 30 MILES NORTHEAST OF WATERLOO OR 10 MILES EAST OF OELWEIN...AND IN A NARROW BAND EXTENDING FROM 25 MILES NORTH TO 40 MILES EAST OF OTTUMWA. THESE STORMS WERE ALSO CAPABLE OF PRODUCING HEAVY RAIN AND POSSIBLY SOME SMALL HAIL. THE STORMS WERE PART OF AN AREA OF SCATTERED SHOWERS AND STORMS LOCATED GENERALLY EAST OF A LINE FROM WATERLOO TO THE IOWA/MISSOURI BORDER SOUTH OF OTTUMWA. . THE AREA OF SHOWERS AND STORMS WAS MOVING EAST AT 30 TO 35 MILES AN HOUR. JAK
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 8:36 PM CDT | Tornado Warning | DMX | Iowa, Johnson | 28 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1992Every severe thunderstorm warning in 1992
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.