District of ColumbiaSite status

Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Mazatlán, Mexico (76458), 00Z. Its levels are in the table below.
Observed Sounding at Mazatlán, Mexico (76458), for (5 h 6 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (60)
Mazatlán, Mexico (76458): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1008 mb4 m33.026.0240° 4 kt
1000 mb78 m30.024.0280° 4 kt
975 mb302 m27.723.7270° 10 kt
955 mb486 m25.823.5—
943 mb597 m24.823.3275° 10 kt
931 mb709 m23.822.0—
925 mb766 m25.215.2295° 8 kt
912 mb890 m23.819.5—
880 mb1203 m21.918.9005° 4 kt
866 mb1343 m21.018.6—
850 mb1505 m21.017.1040° 10 kt
821 mb1806 m20.014.4045° 12 kt
766 mb2402 m16.89.1105° 16 kt
700 mb3165 m10.65.6095° 23 kt
688 mb3308 m9.44.8100° 23 kt
646 mb3831 m5.22.0—
633 mb3997 m5.2-3.8—
621 mb4154 m3.8-1.1—
611 mb4286 m2.6-0.7—
597 mb4474 m1.8-8.2—
570 mb4847 m-0.5-3.2—
558 mb5018 m-1.7-4.4—
545 mb5206 m-1.5-11.5—
534 mb5369 m-2.9-6.1—
522 mb5549 m-3.9-4.7—
512 mb5702 m-4.5-5.8170° 14 kt
500 mb5890 m-5.3-7.2165° 16 kt
454 mb6638 m-10.3-13.2—
436 mb6947 m-11.5-14.8—
422 mb7196 m-13.0-29.3185° 25 kt
400 mb7600 m-15.3-27.3190° 27 kt
385 mb7887 m-17.1-20.2—
373 mb8123 m-18.3-27.3—
345 mb8697 m-22.3-26.7225° 18 kt
332 mb8980 m-24.3-26.4—
318 mb9292 m-26.5-31.3195° 27 kt
300 mb9710 m-28.5-31.8210° 29 kt
277 mb10277 m-32.9-34.6—
250 mb10990 m-38.5-43.5225° 29 kt
238 mb11326 m-40.7-48.7—
225 mb11702 m-44.1-52.1230° 27 kt
214 mb12037 m-47.1-55.1—
203 mb12383 m-50.1-63.1—
200 mb12480 m-50.9-64.9235° 33 kt
171 mb13473 m-59.0-73.0245° 39 kt
160 mb13895 m-62.5-76.5—
150 mb14290 m-65.5-76.5245° 23 kt
140 mb14705 m-69.3-78.3240° 21 kt
120 mb15605 m-73.2-81.8265° 10 kt
108 mb16221 m-75.9-84.2130° 2 kt
100 mb16670 m-77.9-85.9130° 14 kt
88 mb17393 m-80.6-86.6085° 8 kt
77 mb18184 m-79.5-86.5—
64 mb19237 m-68.9-89.1160° 12 kt
53 mb20377 m-65.5-94.5150° 18 kt
43 mb21660 m-63.4-96.4035° 18 kt
33 mb23316 m-56.6-91.0135° 10 kt
20 mb26530 m-50.9-86.9165° 6 kt
10 mb31110 m-43.7-81.7315° 14 kt
8 mb32631 m-39.9-78.9—
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

District of Columbia briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.