Alert archive / Arizona / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 52, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 5, 1998, 11:56 PM MST for Pinal County, Arizona. It was in force for 49 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
- Aug 5, 1998, 11:56 PM MST (06:56 UTC)
- Expired
- Aug 6, 1998, 12:45 AM MST
- In force
- 49 min
- Issued by
- NWS Tucson, AZ
- Area
- Whole counties
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 52 km from the middle of the area, began a volume at 06:55 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
Tuscon, AZ (KTUS), launched 00:00Z, 6.9 hours before the alert went out and 92 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 7202 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
927 WUUS1 KTUS 060657 RRA SVRTUS AZC021-060745- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1156 PM MST WED AUG 5 1998 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA * UNTIL 1245 AM MST * AT 1154 PM MST... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHEAST OF KELVIN MOVING SOUTH SOUTHWEST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... KELVIN BY 1203 AM MST KEARNY BY 1207 AM MST MEYER
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 Tucson, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 5, 9:30 PM MST, 2 hours 26 minutes earlier.
Area forecast discussion, Aug 5, 9:30 PM MST, 2 hours 26 minutes before
SOUTHEAST ARIZONA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TUCSON AZ 930 PM MST WED AUG 5 1998 SYNOPSIS...ABUNDANT MOISTURE HAS MOVED BACK INTO ARIZONA AND COMBINED WITH DAYTIME HEATING SCATTERED THUNDERSTORMS WILL DEVELOP EACH AFTERNOON AND EVENING. DISCUSSION...BACK DOOR FRONT/GULF SURGE/COLD H5 HGHTS ALL COMBINING TO GIVE US A DECENT OUTBREAK THIS EVENING. MOST STORMS HUNG NEAR THE MOUNTAINS AND THERE WAS A LOT OF TRAINING...WITH 5-9 INCHES OF RAIN INDICATED BY DOPPLER RADAR AT SOME SPOTS. THATS DONE SO WHAT ABOUT TOMORROW. ONE THING THAT CHANGES IS LOW LVL FLOW WILL REMAIN ERLY THRU THE DAY. THAT WONT ALLOW THE HIGHER DEWPOINT AIR THAT THE GULF SURGE BROUGHT INTO THE LOW DESERT TO HELP GET THE STORMS OFF THE MOUNTAINS. SO I WONDER IF WE WILL SEE MUCH CHANGE FROM WHAT WE HAD TODAY. OF COURSE THE NE H5 FLOW IS FAVORABLE FOR PRECIP IN SE AZ. OF CURIOUS NOTE IS THE MODELS INSISTENCE ON PUTTING A STRONG CYCLONIC CIRCULATION OFF THE WEST COAST OF BAJA BY 48 HRS. IS THIS JUST A POOR INITILIZATION OF THE SYSTEM THAT APPEARS TO BE 110W AND 15N. THE MODELS HAVE BEEN DOING THIS ALL SUMMER...MAYBE ONE OF THESE DAYS SOMETHING WILL REALLY BE THERE BUT FOR NOW I KIND OF IGNORE IvT. WILL DO A ZONE UPDATE SOON TO REFLECT CURRENT TRENDS. TUS 2343. HOLBROOK .TWC...NONE.
In the hours before
Local storm report, Aug 5, 10:49 PM MST, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
1049 PM MST WED AUG 05 1998
TIME(MST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0545 PM TUCSON AZ .75 INCH HAIL
08/05/98 PIMA NORTHEAST TUCSON
0550 PM TUCSON AZ .75 INCH HAIL
08/05/98 PIMA SANTA CATALINA FOOTHILLS
WIND GUST OVER 50 MPH
0553 PM TUCSON AZ .75 INCH HAIL
08/05/98 PIMA WINDS IN EXCESS OF 55 MPH
4 TO 5 POUND TILES BLOWN
OFF ROOFS
0555 PM TUCSON AZ 1.5 INCH HAIL
08/05/98 PIMA 1/4 MILE NORTH OF SWAN AND
SUNRISE
0558 PM TUCSON AZ 1 INCH HAIL
08/05/98 PIMA ACE HARDWARE ON SWAN
0708 PM VAIL AZ 70 MPH TSTM GUST
08/05/98 PIMA 15 N OF SONOITA ON HIGHWAY
83 IN SOUTHEAST PIMA
COUNTYLocal storm report, Aug 5, 10:49 PM MST, 1 hour 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TUCSON ARIZONA
1049 PM MST WED AUG 05 1998
TIME(MST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0545 PM TUCSON AZ .75 INCH HAIL
08/05/98 PIMA NORTHEAST TUCSON
0550 PM TUCSON AZ .75 INCH HAIL
08/05/98 PIMA SANTA CATALINA FOOTHILLS
WIND GUST OVER 50 MPH
0553 PM TUCSON AZ .75 INCH HAIL
08/05/98 PIMA WINDS IN EXCESS OF 55 MPH
4 TO 5 POUND TILES BLOWN
OFF ROOFS
0555 PM TUCSON AZ 1.5 INCH HAIL
08/05/98 PIMA 1/4 MILE NORTH OF SWAN AND
SUNRISE
0558 PM TUCSON AZ 1 INCH HAIL
08/05/98 PIMA ACE HARDWARE ON SWAN
0708 PM VAIL AZ 70 MPH TSTM GUST
08/05/98 PIMA 15 N OF SONOITA ON HIGHWAY
83 IN SOUTHEAST PIMA
COUNTYThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 5:24 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Aug 5, 5:43 PM MST | Severe Thunderstorm Warning | TWC | Pima | 62 min |
| Aug 5, 6:38 PM MST | Flash Flood Warning | TWC | Pima | 52 min |
| Aug 5, 6:38 PM MST | Severe Thunderstorm Warning | TWC | Pima | 52 min |
| Aug 5, 7:20 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 75 min |
| Aug 5, 8:54 PM MST | Flash Flood Warning | TWC | Pima | 96 min |
| Aug 6, 2:44 AM MST | Severe Thunderstorm Warning | TWC | Pima | 61 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 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; radar from the NEXRAD Level II archive.